https://wiki.seas.harvard.edu/geos-chem/api.php?action=feedcontributions&user=Chen&feedformat=atomGeos-chem - User contributions [en]2024-03-28T21:54:51ZUser contributionsMediaWiki 1.24.2https://wiki.seas.harvard.edu/geos-chem/index.php?title=CO2_simulation&diff=20997CO2 simulation2015-05-07T15:41:31Z<p>Chen: /* CO<span><sub>2</sub> simulation user groups */</p>
<hr />
<div>This page contains information about the carbon dioxide (CO<span><sub>2</sub>) simulation in GEOS-Chem.<br />
<br />
== Overview ==<br />
<br />
The original GEOS-Chem CO<span><sub>2</sub> simulation was developed by Parv Suntharalingam (Suntharalingam et al., 2003; 2004), now at the University of East Anglia. A major update to the CO<span><sub>2</sub> simulation was developed by Ray Nassar and Dylan B.A. Jones of the University of Toronto (Nassar et al., 2010). This update was delivered to the GEOS-Chem software development team at Harvard on 2010 April 1. The latest update to the CO2 simulation was developed by Ray Nassar (now at Environment Canada) and appears in GEOS-Chem v10-01, which was released on 2015 May 1.'''''<br />
<br />
The 2010 update retained the original six CO<span><sub>2</sub> fluxes: fossil fuel, ocean exchange, biomass burning, biofuel burning, balanced terrestrial exchange (CASA) and net annual terrestrial exchange. Other inventories are available as options for some of these fluxes and other new fluxes were added such as CO<span><sub>2</sub> emissions from international shipping and aviation. There is also an optional feature to include CO<span><sub>2</sub> production from the oxidation of CO, CH<span><sub>4</sub> and NMVOCs. This chemical source concept was first highlighted by Enting and Mansbridge (1991). Although a few attempts have been made by other groups in the past, this implementation made GEOS-Chem the only 3-D global model to account for the chemical production of CO<span><sub>2</sub>. The GEOS-Chem implementation uses an approach similar to that described in Suntharalingam et al. (2005), with some updated year-specific numbers and some other modifications described in Nassar et al. (2010). The full GEOS-Chem CO<span><sub>2</sub> update was applied to and tested with v8-02-01 (along with some patches). It has been publicly available in GEOS-Chem release v8-03-02 and later versions, along with an update to the GEOS-Chem online manual. The references below are cited in the updated code's comments and online manual, and include the new CO<span><sub>2</sub> simulation description paper Nassar et al. (2010).<br />
<br />
Details of the 2015 update available as v10-01 will be available on this wiki page in early May. Please note: The new HEMCO netCDF file for CDIAC national fossil fuel CO2 emissions is not ready due to a delay from CDIAC, but is expected to be available by May 7.<br />
<br />
=== Authors and collaborators ===<br />
* [mailto:ray.nassar@ec.gc.ca Ray Nassar] ''(Environment Canada)''<br />
<br />
=== CO<span><sub>2</sub> simulation user groups ===<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group<br />
!Personnel<br />
!Projects<br />
|-valign="top"<br />
|[http://www.atmosp.physics.utoronto.ca/~jones/ University of Toronto]<br />
|[mailto:dbj@atmosp.physics.utoronto.ca Dylan Jones]<br />
| Model updates and application to inverse modeling<br />
<br />
|-valign="top"<br />
|Korea Environment Institute (KEI)]<br />
|[mailto:cshim@kei.re.kr Changsub Shim]<br />
|<br />
|-valign="top"<br />
|[http://spot.colorado.edu/~henzed/index.html University of Colorado Boulder]<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
| CO2 adjoint<br />
|-valign="top"<br />
|UEA<br />
|[mailto:zhaohui.chen@uea.ac.uk Chen]<br />
| Inverse modeling of CO2 using satellite<br />
|-valign="top"<br />
|Tsinghua University<br />
|[mailto:limingwei06@gmail.com Yuxuan Wang ; Mingwei Li]<br />
|<br />
|-valign="top"<br />
|[http://www.ec.gc.ca/scitech/default.asp?lang=En&n=F97AE834-1&xsl=scitechprofile&xml=F97AE834-A762-47A6-A2D9-9C397FD72F37&formid=6706100A-4FFF-4926-B415-6D10BA6A9F51 Environment Canada]<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
| CO<span><sub>2</sub> modeling and source sink estimation using satellite and in situ data<br />
|-valign="top"<br />
|[http://wennberg-wiki.caltech.edu/ Caltech]<br />
|[mailto:janina@caltech.edu Janina Messerschmidt]<br />
| CO<span><sub>2</sub> source/sink estimation using ground-based FTS data<br />
|-valign="top"<br />
|[http://www.uow.edu.au/ University of Wollongong]<br />
|[mailto:ndeutsch@uow.edu.au Nicholas Deutscher]<br />
| CO<span><sub>2</sub> source/sink estimation using ground-based FTS (TCCON) data and co-located surface measurements. Focus on Australia<br />
|-valign="top"<br />
<br />
|Add yours here!<br />
|<br />
|<br />
|}<br />
<br />
== Validation ==<br />
<br />
The updated CO<span><sub>2</sub> simulation will be incorporated into GEOS-Chem v8-03-02. In Nassar et al. (2010) model comparisons are made with GLOBALVEIW-CO2 (http://www.esrl.noaa.gov/gmd/ccgg/globalview/co2/co2_intro.html) and CONTRAIL (Comprehensive Observation Network for TRace gases by AIrLiner) measurements. In other work, the CO<span><sub>2</sub> simulation has also been compared with aircraft observations from the HIAPER Pole-to-Pole Observations (HIPPO) campaigns of 2009 (Wofsy et al., 2010).<br />
<br />
== Restart Files ==<br />
<br />
=== Description ===<br />
<br />
Some single-tracer restart files are available:<br />
<br />
;restart.20000101:CO2 restart file for GEOS4 (30 levels) on date 2000-01-01<br />
;restart.20040101:CO2 restart file for GEOS5 (47 levels) on date 2004-01-01<br />
<br />
These two restart file have uniform CO<span><sub>2</sub> values of 367.2 ppm for 2000-01-01 and 375.0 ppm for 2004-01-01, which are reasonable estimates of the global mean, but not realistic in the global distribution. Spinning up for one year will result in a realistic distribution in terms of both the global mean value and gross features (latitudinal gradient and seasonal/diurnal cycle) but accurate work will require adjusting or calibrating the restart file with actual measurements for the start of your run. The method of calibration using the sparse in situ measurements and/or satellite observations can be an active area of research on its own, so determining the approach to this is left to the user.<br />
<br />
=== Downloading ===<br />
<br />
You can use the Git version control software to download GEOS-Chem run directories containing the above-mentioned restart files and other relevant input files (e.g. <tt>input.geos</tt>).<br />
<br />
To download the GEOS-4 (30 levels) run directory, use this command:<br />
<br />
git clone git://git.as.harvard.edu/bmy/GEOS-Chem-rundirs/2x2.5/geos4/CO2_run<br />
<br />
To download the GEOS-5 (47 levels) run directory, use this command:<br />
<br />
git clone git://git.as.harvard.edu/bmy/GEOS-Chem-rundirs/2x2.5/geos5/CO2_run<br />
<br />
== Nested-grid CO2 simulation ==<br />
<br />
'''''This update was tested in the 1-month benchmark simulation [[GEOS-Chem_v9-01-03_benchmark_history#v9-01-03h|v9-01-03h]] and approved on 09 Mar 2012.'''''<br />
<br />
'''''[mailto:yxw@tsinghua.edu.cn Yuxuan Wang] wrote:'''''<br />
<br />
:The nested-grid CO2 simulation is developed and tested based on [[GEOS-Chem v8-02-01|v8-02-01]]. Except for code changes for nested-grid simulation in general, specific changes are made to read the CO2 fluxes at 0.5x0.667 resolution . These fluxes are regridded to 0.5x0.667 either from 1x1 input files on the fly when running GEOS-Chem or from 2x2.5 data files off-line using IDL.<br />
<br />
--[[User:Melissa Payer|Melissa Payer]] 16:00, 2 December 2011 (EST)<br />
<br />
== References ==<br />
<br />
#Andres, R. J., G. Marland, I. Fung, and E. Matthews, ''A 1&deg;x1&deg; distribution of carbon dioxide emissions from fossil fuel consumption and cement manufacture'', <u>Global Biogeochem. Cycles</u>, '''10''', 419–429, 1996.<br />
#Andres, R. J., Gregg, J. S., Losey, L., Marland, G., and Boden, T. A.: ''Monthly, global emissions of carbon dioxide from fossil fuel consumption'', <u>Tellus B</u>, 63B, 2011.<br />
#Baker, D. F., et al., ''TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO<span><sub>2</sub> fluxes, 1988-2003'', <u>Global Biogeochem. Cycles</u>, '''20''', GB1002, doi:10.1029/2004GB002439, 2006.<br />
#Boden, T.A., G. Marland, and R.J. Andres, ''Global, Regional, and National Fossil-Fuel CO<span><sub>2</sub> Emissions''. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001, 2009.<br />
#Corbett & Koehler, ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, '''108''', D20, 4650, 2003.<br />
#Corbett, J. J., and H. W. Koehler, ''Considering alternative input parameters in an activity-based ship fuel consumption and emissions model'': Reply to comment by Øyvind Endresen et al. on ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, '''109''', 2004.<br />
#Duncan, B. N., R. V. Martin, A. C. Staudt, R. Yevich, and J. A. Logan, ''Interannual and seasonal variability of biomass burning emissions constrained by satellite observations'', <u>J. Geophys. Res.</u>, '''108'''(D2), 4100, doi:10.1029/2002JD002378, 2003.<br />
#Endresen, O, et al., ''A historical reconstruction of ships fuel consumption and emissions'', <u>J. Geophys. Res</u>, '''112''', D12301, 2007.<br />
#Enting, I. G. and Mansbridge, J. V.: Latitudinal distribution of sources and sinks of CO<span><sub>2</sub>: results of and inversion study, <u>Tellus B</u>, '''43''', 156–170, 1991.<br />
#Kim, B. Y., et al., ''System for assessing Aviation's Global Emissions (SAGE) Version 1.5 global Aviation Emissions Inventories for 2000-2004'', 2005.<br />
#Kim, B. Y., et al., ''System for assessing Aviation’s Global Emissions (SAGE), Part 1: Model description and inventory results'', <u>Transportation Research</u>, Part D 12, 325–346, 2007.<br />
#Le Quere, C. et al., ''Trends in the sources and sinks of carbon dioxide'', <u>Nature Geoscience</u>, doi:10.1038/ngeo689, 2009.<br />
#Nassar, R., D. B. A. Jones, P. Suntharalingam, J. M. Chen, R. J. Andres, K. J. Wecht, R. M. Yantosca, S. S. Kualwik, K. W. Bowman, J. R. Worden, T. Machida, H. Matsueda, ''Modeling global atmospheric CO<span><sub>2</sub> with improved emission inventories and CO<span><sub>2</sub> production from the oxidation of other carbon species, Geoscientific Model Development'', 3, 689-716, 2010.<br />
#Olsen, S. C., and J. T. Randerson, ''Differences between surface and column atmospheric CO<span><sub>2</sub> and implications for carbon cycle research'', <u>J. Geophys. Res.</u>, '''109''', D02301, doi:10.1029/2003JD003968, 2004.<br />
#Potter, C. S., J. T. Randerson, C. B. Field, P. A. Matson, P. M. Vitousek, H. A. Mooney, and S. A. Klooster, ''Terrestrial ecosystem production: A process model based on global satellite and surface data'', <u>Global Biogeochem. Cycles</u>, 7, 811–841, 1993.<br />
#Sausen, R. and U. Schumann, ''Estimates of the Climate Response to Aircraft CO<span><sub>2</sub> and NO<span><sub>x</sub> Emissions Scenarios'', <u>Climate Change</u>, '''44''': 27-58, 2000.<br />
#Suntharalingam, P., C. M. Spivakovsky, J. A. Logan, and M. B. McElroy, ''Estimating the distribution of terrestrial CO<span><sub>2</sub> sources and sinks from atmospheric measurements: Sensitivity to configuration of the observation network'', <u>J. Geophys. Res.</u>, '''108'''(D15), 4452, doi:10.1029/2002JD002207, 2003.<br />
#Suntharalingam, P., D. J. Jacob, P. I. Palmer, J. A. Logan, R. M. Yantosca, Y. Xiao, M. J. Evans, D. G. Streets, S. L. Vay, and G. W. Sachse, ''Improved quantification of Chinese carbon fluxes using CO<span><sub>2</sub>/CO correlations in Asian outflow'', <u>J. Geophys. Res.</u>, '''109''', D18S18, doi:10.1029/2003JD004362, 2004.<br />
#Suntharalingam, P., J. T. Randerson, N. Krakauer, J. A. Logan, and D. J. Jacob, ''Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO<span><sub>2</sub>: Implications for inversion analyses'', <u>Global Biogeochem. Cycles</u>, '''19''', GB4003, doi:10.1029/2005GB002466, 2005.<br />
#Takahashi, T., R. A. Feely, R. Weiss, R. H. Wanninkhof, D. W. Chipman, S. C. Sutherland, T. T. Takahashi, ''Global air-sea flux of CO<span><sub>2</sub>: an estimate based on measurements of sea-air pCO<span><sub>2</sub> difference'', <u>Proc. Natl. Acad. Sci.</u>, '''94''', 8292–8299, 1997.<br />
#Takahashi, T., et al., ''Climatological mean and decadal change in surface ocean pCO<span><sub>2</sub>, and net sea–air CO<span><sub>2</sub> flux over the global oceans'', <u>Deep-Sea Res</u>. ''II'', doi:10.1016/j.dsr2.2008.12.009, 2009.<br />
#Wang, C., J.J. Corbett, J. Firestone, ''Modeling Energy Use and Emissions from North American Shipping: Application of the Ship Traffic, Energy, and Environment Model'', <u>Environ. Sci. Technol.</u>, '''41''', 3226-3232, 2008.<br />
#Wilkersen, J.T. et al., ''Analysis of emission data from global commercial Aviation: 2004 and 2006'', <u>Atmos. Chem. Phys. Disc.</u>, '''10''', 2945-2983, 2010.<br />
#Wofsy, S.C., et al., HIAPER Pole-to-Pole Observations (HIPPO): Fine grained, global scale measurements of climatically important atmospheric gases and aerosols, <u>Proceedings of the Royal Society A</u>, '''369''', 2073-2086, 2011. <br />
#Yevich, R., and J. A. Logan, ''An assessment of biofuel use and burning of agricultural waste in the developing world'', <u>Global Biogeochem. Cycles</u>, '''17'''(4), 1095, doi:10.1029/2002GB001952, 2003. [http://acmg.seas.harvard.edu/publications/yevich2003.pdf PDF]<br />
<br />
<br />
<br />
== Previous issues that are now resolved ==<br />
<br />
=== Monthly CDIAC CO2 emissions ===<br />
<br />
Although [[GEOS-Chem v8-03-02]] will be released with the functionality to run with monthly fossil fuel CO<span><sub>2</sub> emissions from CDIAC (R.J. Andres), the inventory files most likely will not be released until a later date, when the submitted paper Andres et al. (2010) is at a sufficient stage. Until then, annually-averaged fossil fuel CO<span><sub>2</sub> emissions must be selected in the input.geos file.<br />
<br />
--[[User:Bmy|Bob Y.]] 12:26, 29 March 2010 (EDT)<br />
<br />
--[[User:Ray|Ray Nassar]] 9:48, 25 June 2010 (EDT)<br />
<br />
'''Update: 25 Feb 2010''': Updated annual and monthly fossil fuel CO2 emissions from CDIAC (version 2010 by R. Andres) are now available for use in [[GEOS-Chem v8-03-02]] and higher versions. These data are located in the data directories:<br />
<br />
GEOS_2x2.5/CO2_201003/fossilfuel_andres/annual_v2010<br />
GEOS_2x2.5/CO2_201003/fossilfuel_andres/monthly_v2010<br />
<br />
GEOS_4x5/CO2_201003/fossilfuel_andres/annual_v2010<br />
GEOS_4x5/CO2_201003/fossilfuel_andres/monthly_v2010<br />
<br />
The 1&deg; x 1&deg; data will be available by special request. Please contact the [[GEOS-Chem Support Team]].<br />
<br />
For more information, please see the following README files:<br />
<br />
# 2&deg; x 2.5&deg; global data: [ftp://ftp.as.harvard.edu/pub/geos-chem/data/GEOS_2x2.5/CO2_201003/fossilfuel_andres/README GEOS_2x2.5/CO2_201003/fossilfuel_andres/README]<br />
# 4&deg; x 5&deg; global data: [ftp://ftp.as.harvard.edu/pub/geos-chem/data/GEOS_2x2.5/CO2_201003/fossilfuel_andres GEOS_2x2.5/CO2_201003/fossilfuel_andres/README]<br />
<br />
--[[User:Bmy|Bob Y.]] 11:48, 25 February 2011 (EST)<br />
<br />
=== Fix for regridding error in offline CO2 simulation ===<br />
<br />
'''''We have corrected this issue as a post-release patch on 22 Sep 2012. This issue does not affect the full-chemistry simulations, only the CO2 simulation.'''''<br />
<br />
'''''[mailto:RayNassar@ec.gc.ca Ray Nassar] wrote:'''''<br />
<br />
:There is a bug in v9-01-03 for the CO2 simulation that causes a crash. It relates to the MAP_A2A regridding and the fact that the net terrestrial exchange file is named with <tt>geos.1x1</tt> (360x181) although it is actually generic 1x1 (360x180) and it is trying to be read as <tt>geos.1x1</tt>.<br />
<br />
'''''[mailto:yantosca@seas.harvard.edu Bob Yantosca] wrote:'''''<br />
<br />
:I fixed the issue in the CO2 code. To avoid further confusion, I made a symbolic link in the data directory:<br />
<br />
cd /as/data/geos/GEOS_1x1/CO_201003<br />
ln –s Net_terrestrial_exch_5.29Pg.geos.1x1 Net_terrestrial_exch_5.29Pg.generic.1x1<br />
<br />
:and then I made these changes in the code:<br />
<br />
! Arrays and pointers<br />
REAL*4 :: ARRAY (IIPAR,JJPAR,1)<br />
REAL*4 :: ARRAY_1x1(I1x1,J1x1-1,1)<br />
REAL*8, TARGET :: GEN_1x1 (I1x1,J1x1-1,1)<br />
REAL*8, TARGET :: GEOS_GRID(IIPAR,JJPAR,1)<br />
REAL*8, POINTER :: INGRID (:,:) => NULL()<br />
REAL*8, POINTER :: OUTGRID(:,:) => NULL()<br />
<br />
. . .<br />
<br />
!------------------------------------<br />
! Read climatological Bionet data<br />
!------------------------------------ <br />
IF ( LBIONETCLIM ) THEN<br />
<br />
! TAU value for start of "generic" year 2000<br />
TAU = GET_TAU0( 1, 1, 2000 )<br />
<br />
!-----------------------------------------------------------------------------<br />
!%%% v9-01-03 POST-RELEASE PATCH (bmy, 10/2/12)<br />
!%%% NOTE: Someone mislabeled the Net_terrestrial_exch file, it is labeled<br />
!%%% "geos.1x1" but is on the GENERIC 1x1 grid. Therefore, we shall rename<br />
!%%% this file accordingly and use the generic grid indices (I1x1,J1x1-1)<br />
!%%% etc. below. (bmy, 10/2/12)<br />
!%%% ! Filename<br />
!%%% FILENAME = TRIM( DATA_DIR_1x1 ) // <br />
!%%% & 'CO2_201003/Net_terrestrial_exch_5.29Pg.geos.1x1'<br />
!%%% <br />
!%%% ! Echo info<br />
!%%% WRITE( 6, 100 ) TRIM( FILENAME )<br />
!%%%<br />
!%%% ! Read Net Terrestrial CO2 Exchange [molec/cm2/s]<br />
!%%% CALL READ_BPCH2( FILENAME, 'CO2-SRCE', 6, <br />
!%%% & TAU, I1x1, J1x1 <br />
!%%% & 1, ARRAY, QUIET=.TRUE. )<br />
!%%%<br />
!%%% ! Cast to REAL*8 before regridding<br />
!%%% GEOS_1x1(:,:,1) = ARRAY(:,:,1)<br />
!%%%<br />
!%%% ! File with lat/lon edges for regridding<br />
!%%% LLFILENAME = TRIM( DATA_DIR_1x1) //<br />
!%%% & 'MAP_A2A_Regrid_201203/MAP_A2A_latlon_geos1x1.nc'<br />
!%%%<br />
!%%% ! Regrid from GEOS 1x1 --> current model resolution<br />
!%%% INGRID => GEOS_1x1 (:,:,1)<br />
!%%% OUTGRID => GEOS_GRID(:,:,1)<br />
!%%% CALL DO_REGRID_A2A( LLFILENAME, I1x1, J1x1, <br />
!%%% & INGRID, OUTGRID, PERAREA=0,<br />
!%%% & netCDF=.TRUE. )<br />
!-----------------------------------------------------------------------------<br />
<br />
! Filename<br />
FILENAME = TRIM( DATA_DIR_1x1 ) // <br />
& 'CO2_201003/' //<br />
& 'Net_terrestrial_exch_5.29Pg.generic.1x1'<br />
<br />
! Echo info<br />
WRITE( 6, 100 ) TRIM( FILENAME )<br />
<br />
! Read Net Terrestrial CO2 Exchange [molec/cm2/s]<br />
CALL READ_BPCH2( FILENAME, 'CO2-SRCE', 6, <br />
& TAU, I1x1, J1x1-1,<br />
& 1, ARRAY_1x1, QUIET=.TRUE. )<br />
<br />
! Cast to REAL*8 before regridding<br />
GEN_1x1(:,:,1) = ARRAY_1x1(:,:,1)<br />
<br />
! File with lat/lon edges for regridding<br />
LLFILENAME = TRIM( DATA_DIR_1x1) //<br />
& 'MAP_A2A_Regrid_201203/' //<br />
& 'MAP_A2A_latlon_generic1x1.nc'<br />
<br />
! Regrid from GEOS 1x1 --> current model resolution<br />
INGRID => GEN_1x1 (:,:,1)<br />
OUTGRID => GEOS_GRID(:,:,1)<br />
CALL DO_REGRID_A2A( LLFILENAME, I1x1, J1x1-1, <br />
& INGRID, OUTGRID, PERAREA=0,<br />
& netCDF=.TRUE. )<br />
<br />
! Free pointers<br />
NULLIFY( INGRID, OUTGRID )<br />
<br />
... etc ... <br />
<br />
I pushed these to the GEOS_Chem repository (and also the GC_Bleeding_Edge repository). You can get it with:<br />
<br />
git pull git://git.as.harvard.edu/bmy/GEOS-Chem master<br />
<br />
The commit was tagged with “Fix_for_CO2_sim” and is labeled:<br />
<br />
v9-01-03 post-release patch to fix bug in CO2 simulation<br />
--[[User:Bmy|Bob Y.]] 15:20, 20 December 2012 (EST)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=Carbon_Cycle_Working_Group&diff=20902Carbon Cycle Working Group2015-05-05T08:58:44Z<p>Chen: /* Current Carbon Cycle Projects (please add yours!) */</p>
<hr />
<div>All users interested in the GEOS-Chem carbon gas simulations (CO, CO2, CH4, etc.) are encouraged to subscribe to the carbon gases email list (click on the link in the [[#Contact information|contact information section]] below).<br />
<br />
== Contact information ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|-<br />
|bgcolor="#CCCCCC"|'''Carbon Cycle Working Group Co-Chairs'''<br />
|[http://www.ec.gc.ca/scitech/default.asp?lang=En&n=F97AE834-1&xsl=scitechprofile&xml=F97AE834-A762-47A6-A2D9-9C397FD72F37&formid=6706100A-4FFF-4926-B415-6D10BA6A9F51 Ray Nassar], [mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|-<br />
|bgcolor="#CCCCCC"|'''Carbon Cycle Working Group email list'''<br />
|<tt>geos-chem-carbon [at] seas.harvard.edu</tt><br />
|-<br />
|bgcolor="#CCCCCC"|'''To subscribe to email list'''<br />
|Send email to <tt>geos-chem-carbon-join [at] seas.harvard.edu</tt><br />
|-<br />
|bgcolor="#CCCCCC"|'''To unsubscribe from email list'''<br />
|Send email to <tt>geos-chem-carbon-leave [at] seas.harvard.edu</tt><br />
|}<br />
<br />
== Current Carbon Cycle Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!width="75px"|Simulation<br />
!width="150px"|User Group <br />
!width="550px"|Description <br />
!width="150px"|Contact Person<br />
!width="150px"|Date Added<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CH4 simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|U. Edinburgh<br />
|Regional methane sources using surface in situ and GOSAT and IASI satellite observations and an ensemble Kalman filter<br />
|[mailto:ac.fraser@ed.ac.uk Annemarie Fraser]<br />
|10 Jun 2009<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Harvard<br />
|Methane sources and sinks based on in situ and satellite observations<br />
|[mailto:kjw@io.harvard.edu Kevin Wecht]<br />
|12 May 2011<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Harvard<br />
|Inverse modeling of methane with GOSAT<br />
|Alex Turner<br />
|7 May 2013<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Purdue University<br />
|Methane sources in Pan-Arctic region<br />
|[mailto:tan80@purdue.edu Zeli Tan]<br />
|26 Nov 2012<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CO and/or Tagged CO simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|U. Wollongong<br />
|Source attribution of Australasian pollution<br />
|[mailto:jennyf@uow.edu.au Jenny Fisher]<br />
|5 Nov 2012<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Using tagged CO simulation to study transport in the UT/LS<br />
|[mailto:jliu@seas.harvard.edu Junhua Liu]<br />
|12 May 2011<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|JPL<br />
|Using tagged CO simulations to interpret MLS observations<br />
|[mailto:jianjun.jin@jpl.nasa.gov Jianjun Jin]<br />
|12 May 2011<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br>and [[NOx-Ox-HC-aerosol|full chemistry]]<br />
|Duke<br />
|CO sources from biomass burning<br>(NOTE: Cross-listed under full-chemistry)<br />
|Prasad Kasibhatla<br />
|15 Jun 2009<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|U. Toronto<br />
|Adjoint analysis of CO sources from MOPITT<br />
|[mailto:zjiang@atmosp.physics.utoronto.ca Zhe Jiang]<br />
|09 Jun 2009<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CO2 simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Caltech<br />
|Source/sink estimation of CO<span><sub>2</sub> using ground-based FTS observations<br />
|[mailto:janina@caltech.edu Janina Messerschmidt]<br />
|26 Sept 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|UEA<br />
|CO2 flux inversions<br />
|[mailto:zhaohui.chen@uea.ac.uk ZhaoHui Chen]<br />
|1 Jul 2011<br />
<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Edinburgh<br />
|Using GEOS-Chem for CO2 flux inversions<br />
|James Barlow<br />
|12 May 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]/[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Using CO/CO2 correlations for CO2 inverse modeling<br />
|[mailto:wqq726@gmail.com Helen Wang]<br />
|12 May 2011<br />
<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Tsinghua U.<br />
|Nested grid simulation to interpret surface CO<span><sub>2</sub> observations<br />
|[mailto:yxw@mail.tsinghua.edu.cn Yuxuan Wang]<br />
|12 May 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Environment Canada<br />
|CO<span><sub>2</sub> modeling and source/sink estimation<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
|11 Apr 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Edinburgh<br />
|CO<span><sub>2</sub> simulation and surface flux estimation by using Ensemble Kalman Filter<br />
|[mailto:lfeng@staffmail.ed.ac.uk Liang Feng]<br />
|18 Aug 2010<br />
<br />
|-<br />
|CO2/CO Adjoint<br />
|JPL<br />
|Source/state estimation of CO2 and CO using atmospheric CO2/CO satellite observations<br />
|[mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|28 Jun 2010<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Toronto<br />
|Modeling CO<span><sub>2</sub> and its sources and sinks with GEOS-Chem<br />
|[mailto:dbj@atmosp.physics.utoronto.ca Dylan Jones]<br />
|09 Jun 2009<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|IUP U. Bremen<br />
|Study the CO2 and OCS relationship using ground-based FTS observations and GEOS-Chem<br />
|[mailto:w_yuting@iup.physik.uni-bremen.de Yuting Wang]<br />
|17 May 2014<br />
|}<br />
<br />
--[[User:Bmy|Bob Y.]] 15:41, 25 April 2014 (EDT)<br />
<br />
== Recently Completed Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
<br />
|- bgcolor="#cccccc"<br />
!width="75px"|Simulation<br />
!width="150px"|User Group <br />
!width="550px"|Description <br />
!width="150px"|Contact Person<br />
!width="150px"|Publication<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Adjoint analysis of CO sources from MOPITT/AIRS/SCIAMACHY<br />
|Monika Kopacz<br />
|Atmos. Chem. Phys., 10, 855-876, 2010. [http://acmg.seas.harvard.edu/publications/Kopacz_etal2010.pdf PDF]<br />
<br />
|}<br />
<br />
--[[User:Bmy|Bob Y.]] 15:40, 25 April 2014 (EDT)<br />
<br />
== Development Priorities ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!width="250px"|Priority<br />
!width="500px"|Description<br />
!width="250px"|Status <br />
|-<br />
|Update biospheric CO2 fluxes<br />
|Currently based on CASA (neutral biosphere) output for one particular year and a climatology of net terrestrial exchange. Running with year-specific fluxes from the SiB3 biospheric model will be a new option. <br />
|To be included in [[GEOS-Chem v10-01]]<br />
|-<br />
|Update anthropogenic CO2 fluxes <br />
|Implement anthropogenic (fossil fuel combustion) CO2 emissions with higher temporal resolution and perhaps higher spatial resolution.<br />
|To be included in [[GEOS-Chem v10-01]]<br />
|-<br />
|Update ocean CO2 fluxes<br />
|Currently using Takahashi et al. (2009) which gives too weak of a global sink. Look into possibilities for scaling or improved ocean fluxes from another source.<br />
|To be included in [[GEOS-Chem v10-01]] <br />
|-<br />
|[[Tagged CO simulation]] <br />
|Improve treatment of secondary production of CO from VOC oxidation. Currently just scale emissions. Modify code to apply photochemical production rates archived from a full chemistry simulation.<br />
| <br />
|-<br />
|CO-CO2-CH4 simulation<br />
|Merge into a single offline simulation for the standard model.<br />
| <br />
|-<br />
|Improved satellite diagnostic <br />
|Implement more flexible diagnostic for saving out XCO2 and other satellite-relevant parameters.<br />
| <br />
|}<br />
<br />
--[[User:Melissa Payer|Melissa Payer]] 10:36, 10 June 2013 (EDT)<br />
--Updated by Ray Nassar 2015 April 14, 16:58 (EDT)<br />
<br />
== Recent updates ==<br />
<br />
The following development items have recently been added to GEOS-Chem:<br />
<br />
{| border=1 cellspacing=0 cellpadding=5 <br />
|-bgcolor="#CCCCCC" valign="top"<br />
!width="100px"|Version<br />
!width="150px"|Released<br />
!width="500px"|Description<br />
!width="200px"|Contact<br />
|-<br />
|v9-02<br />
|Mar 2014<br />
|[[CH4_simulation#Update_CH4_emissions_to_EDGAR_v4.2|EDGAR v4.2 emissions for CH4 simulation]]<br />
|Kevin Wecht (Harvard)<br />
|}<br />
<br />
--[[User:Melissa Payer|Melissa Sulprizio]] 11:08, 17 January 2014 (EST)<br />
<br />
The following development items will soon be added to GEOS-Chem:<br />
<br />
{| border=1 cellspacing=0 cellpadding=5 <br />
|-bgcolor="#CCCCCC" valign="top"<br />
!width="100px"|Version<br />
!width="150px"|Released<br />
!width="500px"|Description<br />
!width="200px"|Contact<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Simple Biosphere (SiB3) model balanced biosphere fluxes (2006-2010) for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Scaled Takahashi et al. (2009) Ocean CO2 fluxes for 2000-2013 for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|ODIAC v2013 national fossil fuel combustion emissions for 2000-2014 for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|TIMES weekly and diurnal fossil fuel temporal scaling factors for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Extended time range for CDIAC, chemical CO2 source, shipping and aviation scale factors for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|}<br />
<br />
--[[Ray Nassar]] 2015 April 14, 17:42 (EST)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=Carbon_Cycle_Working_Group&diff=20901Carbon Cycle Working Group2015-05-05T08:58:15Z<p>Chen: /* Current Carbon Cycle Projects (please add yours!) */</p>
<hr />
<div>All users interested in the GEOS-Chem carbon gas simulations (CO, CO2, CH4, etc.) are encouraged to subscribe to the carbon gases email list (click on the link in the [[#Contact information|contact information section]] below).<br />
<br />
== Contact information ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|-<br />
|bgcolor="#CCCCCC"|'''Carbon Cycle Working Group Co-Chairs'''<br />
|[http://www.ec.gc.ca/scitech/default.asp?lang=En&n=F97AE834-1&xsl=scitechprofile&xml=F97AE834-A762-47A6-A2D9-9C397FD72F37&formid=6706100A-4FFF-4926-B415-6D10BA6A9F51 Ray Nassar], [mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|-<br />
|bgcolor="#CCCCCC"|'''Carbon Cycle Working Group email list'''<br />
|<tt>geos-chem-carbon [at] seas.harvard.edu</tt><br />
|-<br />
|bgcolor="#CCCCCC"|'''To subscribe to email list'''<br />
|Send email to <tt>geos-chem-carbon-join [at] seas.harvard.edu</tt><br />
|-<br />
|bgcolor="#CCCCCC"|'''To unsubscribe from email list'''<br />
|Send email to <tt>geos-chem-carbon-leave [at] seas.harvard.edu</tt><br />
|}<br />
<br />
== Current Carbon Cycle Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!width="75px"|Simulation<br />
!width="150px"|User Group <br />
!width="550px"|Description <br />
!width="150px"|Contact Person<br />
!width="150px"|Date Added<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CH4 simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|U. Edinburgh<br />
|Regional methane sources using surface in situ and GOSAT and IASI satellite observations and an ensemble Kalman filter<br />
|[mailto:ac.fraser@ed.ac.uk Annemarie Fraser]<br />
|10 Jun 2009<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Harvard<br />
|Methane sources and sinks based on in situ and satellite observations<br />
|[mailto:kjw@io.harvard.edu Kevin Wecht]<br />
|12 May 2011<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Harvard<br />
|Inverse modeling of methane with GOSAT<br />
|Alex Turner<br />
|7 May 2013<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Purdue University<br />
|Methane sources in Pan-Arctic region<br />
|[mailto:tan80@purdue.edu Zeli Tan]<br />
|26 Nov 2012<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CO and/or Tagged CO simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|U. Wollongong<br />
|Source attribution of Australasian pollution<br />
|[mailto:jennyf@uow.edu.au Jenny Fisher]<br />
|5 Nov 2012<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Using tagged CO simulation to study transport in the UT/LS<br />
|[mailto:jliu@seas.harvard.edu Junhua Liu]<br />
|12 May 2011<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|JPL<br />
|Using tagged CO simulations to interpret MLS observations<br />
|[mailto:jianjun.jin@jpl.nasa.gov Jianjun Jin]<br />
|12 May 2011<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br>and [[NOx-Ox-HC-aerosol|full chemistry]]<br />
|Duke<br />
|CO sources from biomass burning<br>(NOTE: Cross-listed under full-chemistry)<br />
|Prasad Kasibhatla<br />
|15 Jun 2009<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|U. Toronto<br />
|Adjoint analysis of CO sources from MOPITT<br />
|[mailto:zjiang@atmosp.physics.utoronto.ca Zhe Jiang]<br />
|09 Jun 2009<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CO2 simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Caltech<br />
|Source/sink estimation of CO<span><sub>2</sub> using ground-based FTS observations<br />
|[mailto:janina@caltech.edu Janina Messerschmidt]<br />
|26 Sept 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|UEA<br />
|CO2 flux inversionS<br />
|[mailto:zhaohui.chen@uea.ac.uk ZhaoHui Chen]<br />
|1 Jul 2011<br />
<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Edinburgh<br />
|Using GEOS-Chem for CO2 flux inversions<br />
|James Barlow<br />
|12 May 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]/[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Using CO/CO2 correlations for CO2 inverse modeling<br />
|[mailto:wqq726@gmail.com Helen Wang]<br />
|12 May 2011<br />
<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Tsinghua U.<br />
|Nested grid simulation to interpret surface CO<span><sub>2</sub> observations<br />
|[mailto:yxw@mail.tsinghua.edu.cn Yuxuan Wang]<br />
|12 May 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Environment Canada<br />
|CO<span><sub>2</sub> modeling and source/sink estimation<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
|11 Apr 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Edinburgh<br />
|CO<span><sub>2</sub> simulation and surface flux estimation by using Ensemble Kalman Filter<br />
|[mailto:lfeng@staffmail.ed.ac.uk Liang Feng]<br />
|18 Aug 2010<br />
<br />
|-<br />
|CO2/CO Adjoint<br />
|JPL<br />
|Source/state estimation of CO2 and CO using atmospheric CO2/CO satellite observations<br />
|[mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|28 Jun 2010<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Toronto<br />
|Modeling CO<span><sub>2</sub> and its sources and sinks with GEOS-Chem<br />
|[mailto:dbj@atmosp.physics.utoronto.ca Dylan Jones]<br />
|09 Jun 2009<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|IUP U. Bremen<br />
|Study the CO2 and OCS relationship using ground-based FTS observations and GEOS-Chem<br />
|[mailto:w_yuting@iup.physik.uni-bremen.de Yuting Wang]<br />
|17 May 2014<br />
|}<br />
<br />
--[[User:Bmy|Bob Y.]] 15:41, 25 April 2014 (EDT)<br />
<br />
== Recently Completed Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
<br />
|- bgcolor="#cccccc"<br />
!width="75px"|Simulation<br />
!width="150px"|User Group <br />
!width="550px"|Description <br />
!width="150px"|Contact Person<br />
!width="150px"|Publication<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Adjoint analysis of CO sources from MOPITT/AIRS/SCIAMACHY<br />
|Monika Kopacz<br />
|Atmos. Chem. Phys., 10, 855-876, 2010. [http://acmg.seas.harvard.edu/publications/Kopacz_etal2010.pdf PDF]<br />
<br />
|}<br />
<br />
--[[User:Bmy|Bob Y.]] 15:40, 25 April 2014 (EDT)<br />
<br />
== Development Priorities ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!width="250px"|Priority<br />
!width="500px"|Description<br />
!width="250px"|Status <br />
|-<br />
|Update biospheric CO2 fluxes<br />
|Currently based on CASA (neutral biosphere) output for one particular year and a climatology of net terrestrial exchange. Running with year-specific fluxes from the SiB3 biospheric model will be a new option. <br />
|To be included in [[GEOS-Chem v10-01]]<br />
|-<br />
|Update anthropogenic CO2 fluxes <br />
|Implement anthropogenic (fossil fuel combustion) CO2 emissions with higher temporal resolution and perhaps higher spatial resolution.<br />
|To be included in [[GEOS-Chem v10-01]]<br />
|-<br />
|Update ocean CO2 fluxes<br />
|Currently using Takahashi et al. (2009) which gives too weak of a global sink. Look into possibilities for scaling or improved ocean fluxes from another source.<br />
|To be included in [[GEOS-Chem v10-01]] <br />
|-<br />
|[[Tagged CO simulation]] <br />
|Improve treatment of secondary production of CO from VOC oxidation. Currently just scale emissions. Modify code to apply photochemical production rates archived from a full chemistry simulation.<br />
| <br />
|-<br />
|CO-CO2-CH4 simulation<br />
|Merge into a single offline simulation for the standard model.<br />
| <br />
|-<br />
|Improved satellite diagnostic <br />
|Implement more flexible diagnostic for saving out XCO2 and other satellite-relevant parameters.<br />
| <br />
|}<br />
<br />
--[[User:Melissa Payer|Melissa Payer]] 10:36, 10 June 2013 (EDT)<br />
--Updated by Ray Nassar 2015 April 14, 16:58 (EDT)<br />
<br />
== Recent updates ==<br />
<br />
The following development items have recently been added to GEOS-Chem:<br />
<br />
{| border=1 cellspacing=0 cellpadding=5 <br />
|-bgcolor="#CCCCCC" valign="top"<br />
!width="100px"|Version<br />
!width="150px"|Released<br />
!width="500px"|Description<br />
!width="200px"|Contact<br />
|-<br />
|v9-02<br />
|Mar 2014<br />
|[[CH4_simulation#Update_CH4_emissions_to_EDGAR_v4.2|EDGAR v4.2 emissions for CH4 simulation]]<br />
|Kevin Wecht (Harvard)<br />
|}<br />
<br />
--[[User:Melissa Payer|Melissa Sulprizio]] 11:08, 17 January 2014 (EST)<br />
<br />
The following development items will soon be added to GEOS-Chem:<br />
<br />
{| border=1 cellspacing=0 cellpadding=5 <br />
|-bgcolor="#CCCCCC" valign="top"<br />
!width="100px"|Version<br />
!width="150px"|Released<br />
!width="500px"|Description<br />
!width="200px"|Contact<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Simple Biosphere (SiB3) model balanced biosphere fluxes (2006-2010) for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Scaled Takahashi et al. (2009) Ocean CO2 fluxes for 2000-2013 for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|ODIAC v2013 national fossil fuel combustion emissions for 2000-2014 for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|TIMES weekly and diurnal fossil fuel temporal scaling factors for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Extended time range for CDIAC, chemical CO2 source, shipping and aviation scale factors for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|}<br />
<br />
--[[Ray Nassar]] 2015 April 14, 17:42 (EST)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=Carbon_Cycle_Working_Group&diff=20900Carbon Cycle Working Group2015-05-05T08:57:18Z<p>Chen: /* Current Carbon Cycle Projects (please add yours!) */</p>
<hr />
<div>All users interested in the GEOS-Chem carbon gas simulations (CO, CO2, CH4, etc.) are encouraged to subscribe to the carbon gases email list (click on the link in the [[#Contact information|contact information section]] below).<br />
<br />
== Contact information ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|-<br />
|bgcolor="#CCCCCC"|'''Carbon Cycle Working Group Co-Chairs'''<br />
|[http://www.ec.gc.ca/scitech/default.asp?lang=En&n=F97AE834-1&xsl=scitechprofile&xml=F97AE834-A762-47A6-A2D9-9C397FD72F37&formid=6706100A-4FFF-4926-B415-6D10BA6A9F51 Ray Nassar], [mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|-<br />
|bgcolor="#CCCCCC"|'''Carbon Cycle Working Group email list'''<br />
|<tt>geos-chem-carbon [at] seas.harvard.edu</tt><br />
|-<br />
|bgcolor="#CCCCCC"|'''To subscribe to email list'''<br />
|Send email to <tt>geos-chem-carbon-join [at] seas.harvard.edu</tt><br />
|-<br />
|bgcolor="#CCCCCC"|'''To unsubscribe from email list'''<br />
|Send email to <tt>geos-chem-carbon-leave [at] seas.harvard.edu</tt><br />
|}<br />
<br />
== Current Carbon Cycle Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!width="75px"|Simulation<br />
!width="150px"|User Group <br />
!width="550px"|Description <br />
!width="150px"|Contact Person<br />
!width="150px"|Date Added<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CH4 simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|U. Edinburgh<br />
|Regional methane sources using surface in situ and GOSAT and IASI satellite observations and an ensemble Kalman filter<br />
|[mailto:ac.fraser@ed.ac.uk Annemarie Fraser]<br />
|10 Jun 2009<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Harvard<br />
|Methane sources and sinks based on in situ and satellite observations<br />
|[mailto:kjw@io.harvard.edu Kevin Wecht]<br />
|12 May 2011<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Harvard<br />
|Inverse modeling of methane with GOSAT<br />
|Alex Turner<br />
|7 May 2013<br />
<br />
|-<br />
|[[CH4 simulation|Methane]]<br />
|Purdue University<br />
|Methane sources in Pan-Arctic region<br />
|[mailto:tan80@purdue.edu Zeli Tan]<br />
|26 Nov 2012<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CO and/or Tagged CO simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|U. Wollongong<br />
|Source attribution of Australasian pollution<br />
|[mailto:jennyf@uow.edu.au Jenny Fisher]<br />
|5 Nov 2012<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Using tagged CO simulation to study transport in the UT/LS<br />
|[mailto:jliu@seas.harvard.edu Junhua Liu]<br />
|12 May 2011<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|JPL<br />
|Using tagged CO simulations to interpret MLS observations<br />
|[mailto:jianjun.jin@jpl.nasa.gov Jianjun Jin]<br />
|12 May 2011<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br>and [[NOx-Ox-HC-aerosol|full chemistry]]<br />
|Duke<br />
|CO sources from biomass burning<br>(NOTE: Cross-listed under full-chemistry)<br />
|Prasad Kasibhatla<br />
|15 Jun 2009<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|U. Toronto<br />
|Adjoint analysis of CO sources from MOPITT<br />
|[mailto:zjiang@atmosp.physics.utoronto.ca Zhe Jiang]<br />
|09 Jun 2009<br />
<br />
|- bgcolor="#eeddee"<br />
!&nbsp;<br />
!&nbsp;<br />
!Projects using CO2 simulations<br />
!&nbsp;<br />
!&nbsp;<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Caltech<br />
|Source/sink estimation of CO<span><sub>2</sub> using ground-based FTS observations<br />
|[mailto:janina@caltech.edu Janina Messerschmidt]<br />
|26 Sept 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|UEA<br />
|CO2 flux inversion<br />
|[mailto:zhaohui.chen@uea.ac.uk ZhaoHui Chen]<br />
|1 Jul 2011<br />
<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Edinburgh<br />
|Using GEOS-Chem for CO2 flux inversions<br />
|James Barlow<br />
|12 May 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]/[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Using CO/CO2 correlations for CO2 inverse modeling<br />
|[mailto:wqq726@gmail.com Helen Wang]<br />
|12 May 2011<br />
<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Tsinghua U.<br />
|Nested grid simulation to interpret surface CO<span><sub>2</sub> observations<br />
|[mailto:yxw@mail.tsinghua.edu.cn Yuxuan Wang]<br />
|12 May 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|Environment Canada<br />
|CO<span><sub>2</sub> modeling and source/sink estimation<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
|11 Apr 2011<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Edinburgh<br />
|CO<span><sub>2</sub> simulation and surface flux estimation by using Ensemble Kalman Filter<br />
|[mailto:lfeng@staffmail.ed.ac.uk Liang Feng]<br />
|18 Aug 2010<br />
<br />
|-<br />
|CO2/CO Adjoint<br />
|JPL<br />
|Source/state estimation of CO2 and CO using atmospheric CO2/CO satellite observations<br />
|[mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|28 Jun 2010<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|U. Toronto<br />
|Modeling CO<span><sub>2</sub> and its sources and sinks with GEOS-Chem<br />
|[mailto:dbj@atmosp.physics.utoronto.ca Dylan Jones]<br />
|09 Jun 2009<br />
<br />
|-<br />
|[[CO2 simulation|CO2]]<br />
|IUP U. Bremen<br />
|Study the CO2 and OCS relationship using ground-based FTS observations and GEOS-Chem<br />
|[mailto:w_yuting@iup.physik.uni-bremen.de Yuting Wang]<br />
|17 May 2014<br />
|}<br />
<br />
--[[User:Bmy|Bob Y.]] 15:41, 25 April 2014 (EDT)<br />
<br />
== Recently Completed Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
<br />
|- bgcolor="#cccccc"<br />
!width="75px"|Simulation<br />
!width="150px"|User Group <br />
!width="550px"|Description <br />
!width="150px"|Contact Person<br />
!width="150px"|Publication<br />
<br />
|-<br />
|[[Tagged CO simulation|Tagged CO]]<br />
|Harvard<br />
|Adjoint analysis of CO sources from MOPITT/AIRS/SCIAMACHY<br />
|Monika Kopacz<br />
|Atmos. Chem. Phys., 10, 855-876, 2010. [http://acmg.seas.harvard.edu/publications/Kopacz_etal2010.pdf PDF]<br />
<br />
|}<br />
<br />
--[[User:Bmy|Bob Y.]] 15:40, 25 April 2014 (EDT)<br />
<br />
== Development Priorities ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!width="250px"|Priority<br />
!width="500px"|Description<br />
!width="250px"|Status <br />
|-<br />
|Update biospheric CO2 fluxes<br />
|Currently based on CASA (neutral biosphere) output for one particular year and a climatology of net terrestrial exchange. Running with year-specific fluxes from the SiB3 biospheric model will be a new option. <br />
|To be included in [[GEOS-Chem v10-01]]<br />
|-<br />
|Update anthropogenic CO2 fluxes <br />
|Implement anthropogenic (fossil fuel combustion) CO2 emissions with higher temporal resolution and perhaps higher spatial resolution.<br />
|To be included in [[GEOS-Chem v10-01]]<br />
|-<br />
|Update ocean CO2 fluxes<br />
|Currently using Takahashi et al. (2009) which gives too weak of a global sink. Look into possibilities for scaling or improved ocean fluxes from another source.<br />
|To be included in [[GEOS-Chem v10-01]] <br />
|-<br />
|[[Tagged CO simulation]] <br />
|Improve treatment of secondary production of CO from VOC oxidation. Currently just scale emissions. Modify code to apply photochemical production rates archived from a full chemistry simulation.<br />
| <br />
|-<br />
|CO-CO2-CH4 simulation<br />
|Merge into a single offline simulation for the standard model.<br />
| <br />
|-<br />
|Improved satellite diagnostic <br />
|Implement more flexible diagnostic for saving out XCO2 and other satellite-relevant parameters.<br />
| <br />
|}<br />
<br />
--[[User:Melissa Payer|Melissa Payer]] 10:36, 10 June 2013 (EDT)<br />
--Updated by Ray Nassar 2015 April 14, 16:58 (EDT)<br />
<br />
== Recent updates ==<br />
<br />
The following development items have recently been added to GEOS-Chem:<br />
<br />
{| border=1 cellspacing=0 cellpadding=5 <br />
|-bgcolor="#CCCCCC" valign="top"<br />
!width="100px"|Version<br />
!width="150px"|Released<br />
!width="500px"|Description<br />
!width="200px"|Contact<br />
|-<br />
|v9-02<br />
|Mar 2014<br />
|[[CH4_simulation#Update_CH4_emissions_to_EDGAR_v4.2|EDGAR v4.2 emissions for CH4 simulation]]<br />
|Kevin Wecht (Harvard)<br />
|}<br />
<br />
--[[User:Melissa Payer|Melissa Sulprizio]] 11:08, 17 January 2014 (EST)<br />
<br />
The following development items will soon be added to GEOS-Chem:<br />
<br />
{| border=1 cellspacing=0 cellpadding=5 <br />
|-bgcolor="#CCCCCC" valign="top"<br />
!width="100px"|Version<br />
!width="150px"|Released<br />
!width="500px"|Description<br />
!width="200px"|Contact<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Simple Biosphere (SiB3) model balanced biosphere fluxes (2006-2010) for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Scaled Takahashi et al. (2009) Ocean CO2 fluxes for 2000-2013 for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|ODIAC v2013 national fossil fuel combustion emissions for 2000-2014 for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|TIMES weekly and diurnal fossil fuel temporal scaling factors for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|-<br />
|v10-01<br />
|April 2015 (pending)<br />
|[[CO2_simulation#Update_CO2_emissions|Extended time range for CDIAC, chemical CO2 source, shipping and aviation scale factors for CO2 simulation]]<br />
|Ray Nassar (Environment Canada)<br />
|}<br />
<br />
--[[Ray Nassar]] 2015 April 14, 17:42 (EST)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=User:Chen&diff=20722User:Chen2015-04-27T09:42:09Z<p>Chen: </p>
<hr />
<div>Research associate</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=GEOS-Chem_Adjoint&diff=20721GEOS-Chem Adjoint2015-04-27T09:39:34Z<p>Chen: /* Current GEOS-Chem Adjoint Research Projects (please add yours!) */</p>
<hr />
<div><big><big><strong>Adjoint Working Group</strong></big></big><br />
<br />
== Contact information ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
<br />
|-<br />
|bgcolor="#CCCCCC"|'''Adjoint Model Scientist'''<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
|-<br />
|-<br />
|bgcolor="#CCCCCC"|'''GC adjoint support team'''<br />
|[mailto:yanko.davila@colorado.edu Yanko Davila], [mailto:Nicolas.Bousserez@colorado.edu Nicolas Bousserez]<br />
|-<br />
|bgcolor="#CCCCCC"|'''Adjoint Working Group email list'''<br />
|<tt>geos-chem-adjoint@seas.harvard.edu</tt><br />
|-<br />
|bgcolor="#CCCCCC"|'''To subscribe to email list'''<br />
|Send email to [mailto:geos-chem-adjoint-join@seas.harvard.edu <tt>geos-chem-adjoint-join@seas.harvard.edu</tt>]<br />
|-<br />
|bgcolor="#CCCCCC"|'''To unsubscribe from email list'''<br />
|Send email to [mailto:geos-chem-adjoint-leave@seas.harvard.edu <tt>geos-chem-adjoint-leave@seas.harvard.edu</tt>]<br />
|}<br />
<br />
== Historical Development ==<br />
Original work on the adjoint of GEOS-Chem v6 began in 2003, focusing on the adjoint of the offline aerosol simulation. By 2005, the adjoint was expanded to include a tagged CO simulation and a full chemistry simulation; an adjoint of GEOS-Chem v7 was also developed in the following years. Each of these branches of the adjoint code were been constructed in a hybrid fashion using a combination of automatic differentiation software ([http://www.autodiff.com/tamc TAMC], [http://people.cs.vt.edu/~asandu/Software/Kpp/ KPP]) and manual coding of both discrete and continuous adjoints. They shared many common elements yet had unique features for different applications. <br />
<br />
During the summer of 2009, the existing branches were merged and updated to bring the adjoint into alignment with the latest release of GEOS-Chem, v8-02-01. This merged adjoint model is now the standard adjoint code into which all further development efforts will be placed.<br />
<br />
== Forward Model Code ==<br />
<br />
The forward model on which the adjoint is based originally corresponded to GEOS-Chem v8-02-01. It was subsequently updated as follows:<br />
<br />
* KPP solver for gas-phase chemistry (as in GCv8-02-03)<br />
* Implement Bond 2007 BC/OC emissions (as in GCv8-02-02)<br />
* Apply bug fixes from GCv8-02-02 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-02#Previous_issues_now_resolved_in_v8-02-02 here]<br />
* Apply bug fixes from GCv8-02-03 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-03#Previous_issues_now_resolved_in_v8-02-03 here]<br />
* Apply bug fixes from GCv8-02-04 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-04#Previous_issues_now_resolved_in_v8-02-04 here]<br />
<br />
All bug fixes and model updates were previous listed at the top of inverse_driver.f. We have now switched to documenting the code development cycle here in the wiki, see the following section. <br />
<br />
== Code Versions, Bug Fixes and Developments == <br />
<br />
=== Current GEOS-Chem adjoint version released ===<br />
*[[GEOS-Chem_Adjoint_v35]] (You will download this version when you check out.)<br />
<br />
=== Previous GEOS-Chem adjoint versions released ===<br />
*[[GEOS-Chem_Adjoint_v34]]<br />
*[[GEOS-Chem_Adjoint_v33]] <br />
*[[GEOS-Chem_Adjoint_v32]]<br />
*[[GEOS-Chem_Adjoint_v31]]<br />
<br />
== Summary of Main Adjoint Code Supported Features ==<br />
<br />
=== Features === <br />
* Meteorological fields<br />
** GEOS-3 <i>needs testing</i><br />
** GEOS-4<br />
** GEOS-5 <br />
* model resolution<br />
** 4 x 5<br />
** 2 x 2.5 <br />
** Nested Asia and NA<br />
* Forward model processes<br />
** convection<br />
** advection<br />
** PBL mixing<br />
** dry deposition<br />
** wet deposition<br />
** strat / trop exchange with LINOZ and new GMI strat chem (v9-01-03)<br />
** NOy up fluxes (now replaced with new GMI strat chem)<br />
** aerosols <br />
*** inorganic aerosol thermodynamics with RPMARES<br />
*** inorganic aerosol thermodynamics with ISORROPIA <i> in progress </i><br />
*** sulfate chemistry <br />
*** BC<br />
*** SOA, Dust, sea salt <i> needs doing </i><br />
*** aerosol surface area feedbacks <i> needs updating </i><br />
*** aerosol optical feedbacks <i> needs doing </i><br />
** emissions<br />
*** all standard emissions included<br />
* Simulation modes<br />
** full chemistry<br />
** tagged CO<br />
** tagged Ox <br />
** CH4<br />
** offline aerosols (for BC and dust only)<br />
** CO2<br />
* Observational Operators<br />
** MOPITT CO column<br />
** SCIAMACHY CO column<br />
** AIRS CO column<br />
** IMPROVE BC<br />
** CASTNet (NH4+) <i> needs updating </i> <br />
** GOME / SCIAMACHY NO2 column <i> needs updating </i> <br />
*** using KNMI retrieval (Henze)<br />
*** using Dalhousie retrieval (Shim)<br />
** SCIAMACHY/OMI NO2<br />
*** using Dalhousie retrieval (Bousserez, Padmanabhan)<br />
** TES NH3 <br />
** TES O3 <br />
** GOSAT CO2 <br />
** MLS O3 and TES CO2 <i> in progress </i><br />
* Control parameters<br />
** Initial Conditions scaling factors (linear or log)<br />
** Emissions scaling factors (linear or log) <br />
*** NH3, primary BC/OC, SO2: anthropogenic, natural, bioburn, biomass, ship<br />
*** NOx: soil, aircraft, anthropogenic, biofuel, bioburn<br />
*** Lightning NOx: injection height, yield <i> in progress </i><br />
*** all other gas-phase tracers: anthropogenic, biofuel, bioburn <br />
* Adjoint sensitivities<br />
** w.r.t. all implemented control parameters<br />
** w.r.t Reaction Rate Parameters <br />
** w.r.t all emissions <br />
** of AQ attainment metrics <i> needs updating </i><br />
** of spatiotemporally averaged species concentrations (e.g., arctic O3) <br />
* Other<br />
** Inverse Hessian approximation <br />
** off-diagonal covariance matrices <i> needs updating </i><br />
** 3D-Var <i> needs updating </i><br />
<br />
Features may be qualified as: <br />
* <i>needs testing</i>: an implemented feature that we haven't fully used yet<br />
* <i>needs updating</i>: a feature developed with a previous branch that has yet to be updated to GEOS-Chem v8 and the merged adjoint<br />
* <i>needs doing</i>: a feature nobody has tackled the adjoint of yet<br />
* <i>in progress</i>: a feature currently under development <br />
* <i>in pipeline</i>: a feature which has been submitted and awaiting integration into the CVS repository<br />
<br />
=== Primary code developers ===<br />
Monika Kopacz, Kumaresh Singh, Changsub Shim, Daven Henze<br />
<br />
=== Adjoint model lead scientist ===<br />
Daven Henze<br />
<br />
<br />
<br />
== Resources ==<br />
<br />
=== User's guide ===<br />
A user's guide v35 is available. [http://adjoint.colorado.edu/~yanko/gcadj_std/GC_adj_man.pdf User's Guide v35] <br />
<br />
Previous version v32-v33 available at [http://adjoint.colorado.edu/~daven/gcadj_std/GC_adj_man.pdf User's Guide v32]<br />
<br />
Quick Introduction to GitLab is available at [http://adjoint.colorado.edu/~yanko/gcadj_std/GitLab_Tutorial.pdf GitLab Tutorial]<br />
<br />
=== Code flowchart ===<br />
Meemong Lee has created a detailed flowchart of the inverse model code structure. http://adjoint.colorado.edu/~daven/gcadj_std/flowchart.pdf<br />
<br />
=== Plotting tools ===<br />
<br />
Some IDL and MATLAB routines for plotting benchmark results. http://adjoint.colorado.edu/~daven/gcadj_std/tools.tar.gz<br />
<br />
=== Background papers and presentations ===<br />
<br />
Several articles and presentations (including a GC adjoint modeling clinic overview from IGC5) providing background information about adjoints. http://adjoint.colorado.edu/~daven/gcadj_std/adj_articles.tar.gz<br />
<br />
== Distribution and Use ==<br />
Code for the adjoint is distributed through GITLAB, a web interface connected to a GIT server located at adjoint.colorado.edu. You can access GITLAB at http://adjoint.colorado.edu:8080 after your account is created. Here is our [[Quick Start Guide.]] <br />
<br />
Even if your office mate has a copy of the code, the best way to obtain the model is to get an account for yourself and download a version from the repository. So please do not copy code directly from others or pass the code along to third parties. This vastly helps with tracking developments and keeping up with model updates. <br />
<br />
Use of the adjoint model code follows standard practice for GEOS-Chem. It is expected that any developments that come of individual applications based on this community model will eventually be given back to the community by incorporation of new developments into the standard adjoint code. New development should be submitted to Daven Henze for inclusion in the standard adjoint model code.<br />
<br />
Using GIT gives the users the ability to change the code and commit their changes without affecting the main repository hosted at adjoint.colorado.edu. Users can work with their tuned versions of the code and even create their own tags because GIT acts as a local repository. When ready to submit your update to the comunity just send Daven Henze your [[Using_Git_with_GEOS-Chem#Sharing_your_revisions_with_others_.28and_vice_versa.29|patch]] and we'll take care of the rest.<br />
<br />
=== Quick guide to GIT === <br />
As of version 34 we started using git versioning system and the GitLab web interface. We prepared [http://adjoint.colorado.edu/~yanko/gcadj_std/GitLab_Tutorial.pdf GitLab Tutorial] to help users get used to the web interface and git. We recommend first taking a look at GIT manual to get a general feel for how this tools works (e.g., [http://git-scm.com/documentation GIT Documentation] or [http://www.kernel.org/pub/software/scm/git/docs/git.html GIT Manual Page]). <br />
<br />
<br />
Useful GIT commands: <br />
<br />
Initial download:<br />
git clone ssh://git@adjoint.colorado.edu:2222/yanko.davila/gcadj_std.git<br />
<br />
Status of project vs the current repository:<br />
git status<br />
<br />
Check difference of files (differences have colors for easy reading)<br />
git diff --word-diff=color <wildcard> [<wildcard>] <path>/foo_mod.f<br />
<br />
Checkout specific version<br />
git checkout <wildcard><br />
<br />
Replacing a file with the newest version from the repository:<br />
git checkout origin/master -- <path>/foo_mod.f<br />
<br />
Merging changes in a file: ([http://www.kernel.org/pub/software/scm/git/docs/git-merge.html Reference])<br />
git merge -m <wildcard> <br />
<br />
Comitting<br />
git commit -a<br />
<br />
Tagging a version<br />
git tag -a TAGNAME<br />
<br />
Deleting a tag<br />
git tag -d TAGNAME<br />
git push origin :refs/tags/TAGNAME<br />
<br />
Saving changes to repository<br />
git push<br />
<br />
Saving tags to repository<br />
git push --tags<br />
<br />
List the history of a file:<br />
git log -- <path>/foo_mod.f<br />
<br />
Add a file to the repository<br />
git add <file_name><br />
<br />
Delete a file from the repository<br />
git rm <file_name><br />
<br />
Determine current version<br />
git show HEAD [ | grep commit]<br />
<br />
Download remote changes, rewind your local branch, then replays all your changes over the top of your current branch one by one, until you’re all up to date.<br />
git pull --rebase<br />
<br />
There are several wildcards that you can use on git for example:<br/><br />
''"origin/master"'' - Latest version on the repository <br/><br />
''"HEAD"'' - Latest version as of your last download <br/><br />
''"[http://adjoint.colorado.edu:8080/gcadj_std/commits/72773d7b1a7bd757957d2c186acb3dbb107d5323 v33i]"'' - Specific TAG, find all tag names on GitLab<br/><br />
''"[http://adjoint.colorado.edu:8080/gcadj_std/commits/32d5c926ef529c1dfc640c9dec4a925b24db575c 32d5c926e]"'' - Specific COMMIT, find all commit numbers on GitLab <br/><br />
<br />
[[Using_Git_with_GEOS-Chem|Here is the foward model documentation of git.]]<br />
<br />
=== Backward compatibility (CVS) === <br />
<br />
For people using old version of the code we still have active our CVS repository, but note that the latest version on CVS is v33i-patch2. Here you can find our [[Quick Guide to CVS]]<br />
<br />
== Crediting GEOS-Chem adjoint developers ==<br />
<br />
We aim to make distribution of adjoint model code as immediate as possible. A consequence is that many features may not yet be publicly documented. Therefore, giving code developers due credit is of utmost importance. <br />
<br />
Authors of new additions to the standard code should be offered co-authorship on the first round of presentations and publications to come of their development. Features currently falling in this category and their developers are:<br />
* (v35) HTAP Emissions Inventory. Kateryna Lapina, Daven Henze and Yanko Davila, CU Boulder.<br />
* (v35) NEI2008 Emissions Inventory. Katie Travis; Fabien Paulot, Harvard; Hyungmin Lee, and Daven Henze, CU Boulder. <br />
* (v35) Deposition based cost function. Fabien Paulot, Harvard; Daven Henze and Yanko Davila, CU Boulder. <br />
* (v34) Implementation of the sensitivity to reaction rate constants. Developers: Hyungmin Lee, CU Boulder; Thomas ; Fabien Paulot (Harvard); Daven Henze, CU Boulder and Yanko Davila, CU Boulder. <br />
* (v34) ISOROPIA II adjoint. Developer: Shannon Capps, EPA.<br />
* (v34) Off-diagonal covariance error matrices implementation. Developers: Nicolas Bousserez, CU Boulder; Kumaresh; Yanko Davila, CU Boulder. <br />
* (v32) Nested full chemistry adjoint. Developers: Zhe Jiang, University of Toronto; Daven Henze, CU Boulder.<br />
<br />
<br />
Citation of the appropriate [[GEOS-Chem_Adjoint#Journal_Articles|journal articles]] for mature developments is also encouraged, as well as considering aspects of [http://acmg.seas.harvard.edu/geos/geos_credit.html co-authorship for the forward model]. <br />
<br />
Overall, if you have any questions about authorship, even for a conference presentation, please contact Daven Henze.<br />
<br />
== Current GEOS-Chem Adjoint Research Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group <br />
!Description <br />
!Contact Person<br />
|-<br />
|CU Boulder<br />
|Aerosol precursors, CO2, O3; general adjoint code maintenance<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
|-<br />
|-<br />
|CU Boulder<br />
|Inverse modeling/optimization: variational source inversions, posterior error estimates in high-dimension; general adjoint code maintenance<br />
|[mailto:daven.henze@colorado.edu Nicolas Bousserez]<br />
|-<br />
|CU Boulder<br />
|Identifying long-range sources of atmospheric pollutants utilizing an adjoint method<br />
|[mailto:alicia.camacho@valpo.edu Alicia Camacho]<br />
|-<br />
|CU Boulder<br />
|Sensitivity of nitrate deposition over Antarctica including stratospheric tracers<br />
|[mailto:hyungmin.lee@colorado.edu Hyung-Min Lee]<br />
|-<br />
|CU Boulder<br />
|GEOS-Chem Research<br />
|[mailto:carl.husmann@colorado.edu Carl Husmann]<br />
|-<br />
|CU Boulder<br />
|Constraints on Aerosol Sources<br />
|[mailto:zhen.qu@colorado.edu Zhen Qu]<br />
|-<br />
|Harvard<br />
|Methane<br />
|Alex Turner, aturner [at] fas.harvard.edu<br />
|-<br />
|Harvard<br />
|Methane<br />
|Bram Maasakkers, maasakkers [at] seas.harvard.edu<br />
|-<br />
|Harvard<br />
|Smoke Emissions in SE Asia<br />
|Patrick Kim, kim68 [at] fas.harvard.edu<br />
|-<br />
|Harvard<br />
|Harvard Emissions Component (HEMCO)<br />
|[mailto:ckeller@seas.harvard.edu Christoph Keller]<br />
|-<br />
|Purdue University<br />
|Methane (SICAMACHY, AIRS and IASI)<br />
|[mailto:tang16@purdue.edu Jinyun Tang]<br />
|-<br />
|MIT<br />
|Aircraft emissions<br />
|[mailto:jaminkoo@mit.edu Jamin Koo]<br />
|-<br />
|MIT<br />
|Air quality, aircraft emissions and sensitivities<br />
|[mailto:bvconsta@mit.edu Bogdan V. Constantin]<br />
|-<br />
|Princeton<br />
|BC sensitivities, general adjoint code development<br />
|Monika Kopacz, mkopacz [at] princeton.edu<br />
|-<br />
|Dalhousie University<br />
|Lightning NOx emissions and impact on tropical ozone using the adjoint<br />
|[mailto:Nicolas.Bousserez@colorado.edu Nicolas Bousserez (now at CU-Boulder)]<br />
|-<br />
|Dalhousie University<br />
|Surface NOx emissions inversion using SCIAMACHY/OMI NO2 measurements<br />
|Akhila Padmanabhan akhila [at] dal.ca; Nicolas Bousserez [mailto:Nicolas.Bousserez@colorado.edu] (now at CU-Boulder)<br />
|-<br />
|JPL<br />
|Microwave Limb Sounder (MLS) Ozone assimilation<br />
|[mailto:meemong.lee@jpl.nasa.gov Meemong Lee]<br />
|-<br />
|JPL <br />
| TES ozone assimilation/attribution of ozone radiative forcing<br />
|[mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|-<br />
|University of Edinburgh<br />
|Quantifying the impact of boreal forest fires on tropospheric oxidants over the Atlantic<br />
|[mailto:mark.parrington@ed.ac.uk Mark Parrington]<br />
|-<br />
|US EPA<br />
|Integration with economic models for future emission inventory scenario development<br />
|[mailto:akhtar.farhan@epa.gov Farhan Akhtar]<br />
|-<br />
|Peking University<br />
|Satellite constraints on VOC emissions <br />
|[mailto:tmfu@pku.edu.cn May Fu]<br />
|-<br />
|Peking University<br />
|Inverse modeling of Hg sources over east Asia<br />
|[mailto:whuanhuanw@gmail.com Huanhuan Wang]<br />
|-<br />
|UEA<br />
|CO2 assimilation<br />
|[mailto:zhaohui.chen@uea.ac.uk Chen]<br />
|-<br />
|Purdue University<br />
|Feedback between terrestrial ecosystem processes and atmospheric co2 signals<br />
|[mailto:zhuq@purdue.edu Qing Zhu]<br />
|-<br />
|Purdue University<br />
|Feedback between aquatic ecosystem processes and atmospheric CH4 signals<br />
|[mailto:tan80@purdue.edu Zeli Tan]<br />
|-<br />
|University of Toronto<br />
|Sensitivity of ozone and reactive nitrogen to precursor emissions<br />
|[mailto:twalker@atmosp.physics.utoronto.ca Thomas Walker]<br />
|-<br />
|University of Toronto<br />
|Adjoint analysis for carbon monoxide <br />
|[mailto:zjiang@atmosp.physics.utoronto.ca Zhe Jiang]<br />
|-<br />
|University of Toronto<br />
|Sensitivity of ozone and CO to precursor emissions<br />
|[mailto:cwhaley@atmosp.physics.utoronto.ca Cynthia Whaley]<br />
|-<br />
|Georgia Tech / CU Boulder<br />
|ISORROPIA adjoint development; NH3 assimilation; cloud droplet sensitivities<br />
|[mailto:shannon.capps@colorado.edu Shannon Capps]<br />
|-<br />
|Peking University<br />
|Source attributions of tropospheric ozone over North China<br />
|[mailto:linjt@pku.edu.cn Jintai Lin]<br />
|-<br />
|University of Wollongong<br />
|Sensitivity of ozone and adjoint analysis of CO over Australasia.<br />
|[mailto:rb864@uowmail.edu.au Rebecca Buchholz]<br />
|-<br />
|University of Toronto<br />
|CO2 assimilation & transport model bias estimation<br />
|[mailto:mkeller@atmosp.physics.utoronto.ca Martin Keller]<br />
|-<br />
|University of Wisconsin<br />
|CO2 assimilation and forecast & Temperature profile retrieval <br />
|[mailto:wenguang.bai@ssec.wisc.edu Wenguang Bai]<br />
|-<br />
|Dalhousie University<br />
|Sensitivity of global PM2.5-induced mortality to emissions<br />
|[mailto:colin.lee@dal.ca Colin Lee]<br />
|-<br />
|University of Leicester (UK)<br />
|Top-down estimates of Amazon isoprene emissions<br />
|[mailto:mpb14@le.ac.uk Michael Barkley]<br />
|-<br />
|Anyang University<br />
|Aerosol emission modeling in East Asia <br />
|[mailto:koo@anyang.ac.kr Youn Seo Koo]<br />
|-<br />
|Nanjing University<br />
|Inverse modeling of terrestrial ecosystem carbon flux<br />
|[mailto:hengmao.wang@gmail.com Hengmao Wang]<br />
|-<br />
|Tsinghua University<br />
|Nested-gird simulations with the adjoint model<br />
|[mailto:nany12@mails.tsinghua.edu.cn Nan Yang]<br />
|-<br />
|University of Minnesota<br />
|Inverse modeling of VOC sources based on TES and IASI measurements<br />
||[mailto:kcw@umn.edu Kelley Wells], [mailto:dbm@umn.edu Dylan Millet]<br />
|-<br />
|University of Minnesota & CU Boulder<br />
|Inverse modeling of N2O sources<br />
|[mailto:dbm@umn.edu Dylan Millet], [mailto:Daven.Henze@Colorado.EDU Daven Henze]<br />
|-<br />
|Tsinghua University<br />
|Inverse modeling of anthropogenic emissions over East Asia<br />
|[mailto:qiangzhang@tsinghua.edu.cn Qiang Zhang]<br />
|-<br />
|UCLA<br />
|Constrain black carbon emission<br />
|[mailto:qiling@atmos.ucla.edu Ling Qi]<br />
|-<br />
|UCLA<br />
|source attribution of ozone in the western U.S.<br />
|[mailto:gaomei@atmos.ucla.edu Mei Gao]<br />
|-<br />
|NUS<br />
|Effects of emissions on ozone<br />
|[mailto:rentianyang@nus.edu.sg Ren Tianyang]<br />
|-<br />
|University of Toronto<br />
|Methane inverse modeling<br />
|[mailto:stanevich@atmosp.physics.utoronto.ca Ilya Stanevich]<br />
|-<br />
|}<br />
<br />
== Publications ==<br />
<br />
=== Journal Articles ===<br />
<br />
* '''In press or sumbitted'''<br />
**Turner, A. J., D. J. Jacob, K. J. Wecht, J. D. Maasakkers, S. C. Biraud, H. Boesch, K. W. Bowman, N. M. Deutscher, M. K. Dubey, D. W. T. Griffith, F. Hase, A. Kuze, J. Notholt, H. Ohyama, R. Parker, V. H. Payne, R. Sussmann, V. A. Velazco, T. Warneke, P. O. Wennberg, and D. Wunch, Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data, submitted to Atmos. Chem. Phys.<br />
**Turner, A. J. and D. J. Jacob, Balancing aggregation and smoothing errors in inverse models, submitted to Atmos. Chem. Phys.<br />
<br />
* '''2015'''<br />
**Liu, J., Bowman, K., Lee, M., Henze, D., Bousserez, N., Brix, H., Collatz, G., Menemenlis, D., Ott, L., Pawson, S., Jones, D., Nassar, R.. Carbon monitoring system flux estimation and attribution: impact of ACOS-GOSAT XCO2 sampling on the inference of terrestrial biospheric sources and sinks. Tellus B, North America, 66, may. 2014. Available at: http://www.tellusb.net/index.php/tellusb/article/view/22486<br />
**Lee, C.J., R.V. Martin, Henze D.K., Brauer M., Cohen A., and A. van Donkelaar, Sensitivity of global particulate-matter-related mortality to local precursor emissions, Environ. Sci. Technol., 49(7), 4335–4344, doi:10.1021/acs.est.5b00873, 2015.<br />
**Bousserez, N., D. K. Henze, A. Perkins, K. W. Bowman, M.Lee, J.Liu, D.B.A. Jones, F. Deng, Improved analysis-error covariance matrix for high-dimensional variational inversions: application to source estimation using a 3D atmospheric transport model. Q.J.R. Meteorol. Soc.. doi: 10.1002/qj.2495<br />
<br />
* '''2014'''<br />
** Lee, H., D. K. Henze, B. Alexander, and L. T., Murray, Investigating the sensitivity of surface-level nitrate seasonality in Antarctica to primary sources using a global model, Atmos. Environ., 89, 757--767, doi:0.1016/j.atmosenv.2014.03.003<br />
**Paulot, F., D. J. Jacob, R. W. Pinder, J. O. Bash, K. Travis, D. K. Henze, Ammonia emissions in the United States, Europe, and China derived by high-resolution inversion of ammonium wet deposition data: Interpretation with a new agricultural emissions inventory (MASAGE_NH3), J. Geophys. Res., 119, 7, 4343--4364, doi:10.1002/2013JD021130.<br />
**Lapina, K., D. K. Henze, J. B. Milford, M. Huang, M. Lin, A. M. Fiore, G. Carmichael, G. G. Pfister, and K. W. Bowman, Assessment of source contributions to seasonal vegetative exposure to ozone in the U.S., J. Geophys. Res., 119, 324-340, doi:10.1002/2013JD020905<br />
**Shen, Z., J. Liu, L. W. Horowitz, D. K. Henze, S. Fan, H. Levy II, D. L. Mauzerall, J. Lin, and S. Tao,.: Analysis of transpacific transport of black carbon during HIPPO-3: implications for black carbon aging, Atmos. Chem. Phys. Discuss., 14, 505-540, doi:10.5194/acpd-14-505-2014<br />
**Wells, K. C., D. B. Millet, K. E. Cady-Pereira, M. W. Shephard, D. K. Henze, N. Bousserez, E. C. Apel, J. de Gouw, C. Warneke, H. B. Singh, Quantifying global terrestrial methanol emissions using observations from the TES satellite sensor, Atmos. Chem. Phys., 14, 2555-2570<br />
<br />
* '''2013'''<br />
**Deng, F., D. B. A. Jones, D. K. Henze, N. Bousserez, K. W. Bowman, J. B. Fisher, R. Nassar, C. O'Dell, D. Wunch, P. O. Wennberg, E. A. Kort, S. C. Wofsy, T. Blumenstock, N. M. Deutscher, D. Griffith, F. Hase, P. Heikkinen, V. Sherlock, K. Strong, R. Sussmann, and T. Warneke, Inferring regional sources and sinks of atmospheric CO2 from GOSAT XCO2 data, Atmos. Chem. Phys. Discuss., 13, 26327-26388<br />
**Meland, B., X. Xu, D. K. Henze, J. Wang, Assessing remote polarimetric measurements sensitivities to aerosol emissions using the GEOS-Chem adjoint model, Atmos. Meas. Tech. Discuss., 6, 5447-5493, doi:10.5194/amtd-6-5447-2013<br />
**Xu, X., J. Wang, D. K. Henze, W. Qu, M. Kopacz, Constraints on Aerosol Sources Using GEOS-Chem Adjoint and MODIS Radiances, and Evaluation with Multi-sensor (OMI, MISR) data, J. Geophys. Res., 118, doi:10.1002/jgrd.50515.<br />
**Paulot, F., D. J. Jacob and D. K. Henze, Sources and processes contributing to nitrogen deposition in biodiversity hotspots worldwide, Environ. Sci. Technol, 47, 3226-3233, doi:10.1021/es3027727.<br />
**Koo, J., Q. Wang, D. K. Henze, I. A. Waitz, S.R.H. Barrett, Spatial sensitivities of human health risk to intercontinental and high-altitude pollution, Atmos. Environ., 71, 140-147.<br />
**Kharol, S., R. V. Martin, S. Philip, S. Vogel, D. K. Henze, D. Chen, Y. Wang, Q. Zhang, C. L. Heald, Persistent Sensitivity of Asian Aerosol to Emissions of Nitrogen Oxides, Geophys. Res. Lett., 40, 1021-1026, doi:10.1002/grl.50234.<br />
**Jiang, Z., D. B. A. Jones, H. M. Worden, M. N. Deeter, D. K. Henze, J. Worden, and K. W. Bowman, Quantifying the impact of model biases in convective transport on inferred CO source estimates using multi-spectral CO retrievals from MOPITT, J. Geophys. Res.,118, doi:10.1029/jgrd.50216<br />
**L. Zhu, D. K. Henze, K. E. Cady-Pereira, M. W. Shephard, M. Luo, R. W. Pinder, J. O. Bash, G. Jeong, Constraining U.S. ammonia emissions using TES remote sensing observations and the GEOS-Chem adjoint model, J. Geophys. Res., 118, doi:10.1002/jgrd.50166<br />
**Koo, J., Q. Wang, D. K. Henze, I. A. Waitz, S.R.H. Barrett, Spatial sensitivities of human health risk to intercontinental and high-altitude pollution, Atmos. Environ., 71, 140-147<br />
<br />
* '''2012'''<br />
**Bowman, K. W., and D. K. Henze, Attribution of direct ozone radiative forcing to spatially-resolved emissions, Geophys. Res. Lett., 39, L22704, doi:10.1029/2012GL053274.<br />
**Henze, D. K., D. T. Shindell, F. Akhtar, R. J. D. Spurr, R. W. Pinder, D. Loughlin, M. Kopacz, K. Singh, and C. Shim, Spatially refined aerosol direct radiative forcing efficiencies, Environ. Sci. Technol., 46, 9511 - 9518, dx.doi.org/10.1021/es301993s.<br />
**Karydis, V. A., S. L. Capps, R. H. Moore, A. Russell, D. K. Henze, and A. Nenes, Using a global aerosol model adjoint to unravel the footprint of spatially-distributed emissions on cloud droplet number and cloud albedo, Geophys. Res. Lett., 39, L24804, doi:10.1029/2012GL053346.<br />
**Parrington, M., P. I. Palmer, D. K. Henze, D. W. Tarasick, E. J. Hyer, R. C. Owen, C. Clerbaux, K. W. Bowman, M. N. Deeter, E. M. Barratt, P.-F. Coheur, D. Hurtmans, M. George, and J. R. Worden, The influence of boreal biomass burning emissions on the distribution of tropospheric ozone over North America and the North Atlantic during 2010, Atmos. Chem. Phys., 12, 2077-2098.<br />
**Paulot, F., D. K. Henze, and P. O. Wennberg, Impact of the isoprene photochemical cascade on tropical ozone, Atmos. Chem. Phys., 12, 1307-1325.<br />
**Singh, K. and A. Sandu, 2012: Variational chemical data assimilation with approximate adjoints. Computers and Geosciences, 40, 10-18.<br />
**Turner, A., D. K. Henze, R. V. Martin, and A. Hakami, The spatial extent of source influences on modeled column concentrations of short-lived species, Geophys. Res. Lett., 39, L12806, doi:10.1029/2012GL051832.<br />
**Walker, T., D. B. A. Jones, M. Parrington, D. K. Henze, L. T. Murray, J. W. Bottenheim, K. Anlauf, J. R. Worden, K. W. Bowman, C. Shim, K. Singh, M. Kopacz, D. W. Tarasick, J. Davies, P. von der Gathen, and C. C. Carouge, Impacts of midlatitude precursor emissions and local photochemistry on ozone abundances in the Arctic, J. Geophys. Res.,117, D01305 doi:10.1029/2011JD016370.<br />
**Wang, J., X. Xu, D. K. Henze, Q. Ji, S.-C. Tsay, J. Huang, Top-Down Estimate of Dust Emissions through Integration of MODIS and MISR Aerosol Retrievals with the GEOS-Chem adjoint model, Geophys. Res. Lett., 39, L08802.<br />
**Wecht, K. J., D. J. Jacob, S. C. Wofsy, E. A. Kort, J. R. Worden, S. S. Kulawik, D. K. Henze, M. Kopacz, and V. H. Payne, Validation of TES methane with HIPPO aircraft observations: implications for inverse modeling of methane sources, Atmos. Chem. Phys., 12, 1823-1832.<br />
**Singh, K. and A. Sandu (2012). "Variational chemical data assimilation with approximate adjoints." Computers and Geosciences 40: 10-18.<br />
<br />
* '''2011'''<br />
**Jiang, Z., D. B. A. Jones, M. Kopacz, J. Liu, D. K. Henze, and C. Heald, Quantifying the impact of model errors on top-down estimates of carbon monoxide emissions using satellite observations, J. Geophys. Res., 116, D15306, doi:10.1029/2010JD015282.<br />
**Jiang, Z., D. B. A. Jones, M. Kopacz, J. Liu, D. K. Henze, and C. Heald (2011), Quantifying the impact of model errors on top-down estimates of carbon monoxide emissions using satellite observations, J. Geophys. Res., 116, D15306, doi:10.1029/2010JD015282.<br />
**Kopacz, M., D. L. Mauzerall, J. Wang, E. M. Leibensperger, D. K. Henze, and K. Singh, Origin and radiative forcing of black carbon transported to the Himalayas and Tibetan Plateau, Atmos. Chem. Phys., 11, 2837-2852.<br />
<br />
* '''2010'''<br />
**Kopacz, M., D. J. Jacob, J. A. Fisher, J. A. Logan, L. Zhang, I. A Megretskaia, R. M. Yantosca, K. Singh, D. K. Henze, J. P. Burrows, M. Buchwitz, I. Khlystova, W. W. McMillan, J. C. Gille, D. P. Edwards, A. Eldering, V. Thouret, and P. Nedelec (2010), Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), Atoms. Chem. Phys., 10, 855-876.<br />
**Kopacz, M., D.J. Jacob, J.A. Fisher, J. A. Logan, L. Zhang, I. A. Megretskaia, R. M. Yantosca, K. Singh, D. K. Henze, J. P. Burrows, M. Buchwitz, I. Khlystova, W. W. McMillan, J. C. Gille, D. P. Edwards, A. Eldering, V. Thouret, and P. Nedelec (2010): Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), Atmos. Chem. Phys., 10, 855-876. http://www.atmos-chem-phys.net/10/855/2010/acp-10-855-2010.<br />
**Parrington, M., P. I. Palmer, D. K. Henze, D. W. Tarasick, E. J. Hyer, R. C. Owen, C. Clerbaux, K. W. Bowman, M. N. Deeter, E. M. Barratt, P.-F. Coheur, D. Hurtmans, M. George, and J. R. Worden (2012), The influence of boreal biomass burning emissions on the distribution of tropospheric ozone over North America and the North Atlantic during 2010, Atmos. Chem. Phys., 12, 2077-2098<br />
**Singh, K., Jardak, M., Sandu, A., Bowman, K., Lee, M., and Jones, D. (2010): Construction of non-diagonal background error covariance matrices for global chemical data assimilation, Geosci. Model Dev. Discuss., 3, 1783-1827, doi:10.5194/gmdd-3-1783-2010. http://www.geosci-model-dev-discuss.net/3/1783/2010/gmdd-3-1783-2010.html<br />
<br />
* '''2009'''<br />
**Eller, P., K. Singh, A. Sandu, K. Bowman, D. K. Henze, and M. Lee (2009), Implementation and evaluation of an array of chemical solvers in a global chemical transport model, Geosci. Mod. Devel., 2, 185-207.<br />
**Henze, D. K., J. H. Seinfeld and D. T. Shindell, (2009), Inverse modeling and mapping U.S. air quality influences of inorganic PM2.5 precursor emissions with the adjoint of GEOS-Chem, Atoms. Chem. Phys., 9, 5877-5903.<br />
**Kopacz, M., D. J. Jacob, D. K. Henze, C. L. Heald, D. G. Streets, and Q. Zhang (2009), A comparison of analytical and adjoint Bayesian inversion methods for constraining Asian sources of CO using satellite (MOPITT) measurements of CO columns, J. Geophys. Res., 114, D04305, doi:10.1029/2007JD009264.<br />
**Pye, H. O. T., H. Liao, S. Wu, L. J. Mickely, D. J. Jacob, D. K. Henze, and J. H. Seinfeld (2009), Effect of changes in climate and emissions on future sulfate-nitrate-ammonium aerosol levels in the United States, J. Geophys. Res., 114, D01205, doi:10.1029/2008JD010701.<br />
**Zhang, L., D. J. Jacob, M. Kopacz, D. K. Henze, K. Singh, and D. A. Jaffe (2009), Intercontinental source attribution of ozone pollution at western U.S. sites using an adjoint method, Geophys. Res. Lett., 36, L11810, doi:10.1029/2009GL037950.<br />
<br />
* '''2007'''<br />
**Henze, D. K., A. Hakami and J. H. Seinfeld (2007), Development of the adjoint of GEOS-Chem, Atmos. Chem. Phys., 7, 2413-2433.<br />
<br />
=== Conference proceedings === <br />
* Adjoint inversion of CO sources using combined MOPITT, SCIAMACHY and AIRS CO columns, presented by Monika Kopacz at the COSPAR Scientific Assembly, Montreal, July 18, 2008. http://acmg.seas.harvard.edu/presentations/powerpoints/mak2008/COSPAR_MKopacz_July2008.ppt<br />
<br />
* Singh, K., P. Eller, A. Sandu, D. K. Henze, K. Bowman, M. Kopacz, and M. Lee (2009), Towards the construction of a standard geos-chem adjoint model, ACM High Performance Computing Conference.<br />
<br />
* Kopacz, M., Mauzerall, D.L., Leibensperger, E.M., Wang, J., Henze, D.K., Singh, K., Shim, C. Identifying the origin and estimating the radiative forcing of BC in the Himalayas: an analysis using the global GEOS-Chem adjoint model, European Geophysical Union meeting, Vienna, May 4, 2010.<br />
<br />
* Kopacz, M., Jacob, D.J., Fisher, J.A., Logan, J.A., Zhang, L., Megretskaia, I.A., Yantosca, R.M., Singh, K., Henze, D.K., Burrows, J.P., Buchwitz, M., Khlystova, I., McMillan, W.W., Gille, J.C., Edwards, D.P., Eldering, A., Thouret, V., Nedelec, P. Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), European Geophysical Union meeting, Vienna, May 7, 2010.<br />
<br />
* Tang, J., Zhuang, Q. and Xiong, X. (2010), 4D-Var inversion of atmospheric methane fluxes by assimilating SCIAMACHY and AIRS satellite retrievals, AGU, Dec. 18, 2010, http:/web.ics.purdue.edu/~tang16/agu2010_tang.ppt<br />
<br />
* Bousserez, N., R. V. Martin, K. W. Bowman, D.K. Henze, M. Kopacz, K. Singh, C. Shim, C. Wespes, Improving the lightning NOx source using satellite observations: a 4D-var analysis approach, AGU, Dec., 2010, http://myweb.dal.ca/nc689777/AGU_liNOx_poster_final.pdf</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=GEOS-Chem_Adjoint&diff=5896GEOS-Chem Adjoint2011-01-10T01:23:21Z<p>Chen: /* Current GEOS-Chem Adjoint Research Projects (please add yours!) */</p>
<hr />
<div><big><big><strong>Adjoint and Data Assimilation Working Group</strong></big></big><br />
<br />
== Contact information ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|-<br />
|'''Adjoint Working Group Chair'''<br />
|[mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|-<br />
|-<br />
|'''Adjoint Model Scientist'''<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
|-<br />
|'''Adjoint Working Group email list'''<br />
|<tt>geos-chem-adjoint@seas.harvard.edu</tt><br />
|-<br />
|'''To subscribe to email list'''<br />
|Send email to [mailto:geos-chem-adjoint-join@seas.harvard.edu <tt>geos-chem-adjoint-join@seas.harvard.edu</tt>]<br />
|-<br />
|'''To unsubscribe from email list'''<br />
|Send email to [mailto:geos-chem-adjoint-leave@seas.harvard.edu <tt>geos-chem-adjoint-leave@seas.harvard.edu</tt>]<br />
|}<br />
<br />
== Historical Development ==<br />
Original work on the adjoint of GEOS-Chem v6 began in 2003, focusing on the adjoint of the offline aerosol simulation. By 2005, the adjoint was expanded to include a tagged CO simulation and a full chemistry simulation; an adjoint of GEOS-Chem v7 was also developed in the following years. Each of these branches of the adjoint code were been constructed in a hybrid fashion using a combination of automatic differentiation software ([http://www.autodiff.com/tamc TAMC], [http://people.cs.vt.edu/~asandu/Software/Kpp/ KPP]) and manual coding of both discrete and continuous adjoints. They shared many common elements yet had unique features for different applications. <br />
<br />
During the summer of 2009, the existing branches were merged and updated to bring the adjoint into alignment with the latest release of GEOS-Chem, v8-02-01. This merged adjoint model is now the standard adjoint code into which all further development efforts will be placed.<br />
<br />
== Current Forward Model Code ==<br />
<br />
The forward model on which the adjoint is based corresponds to GEOS-Chem v8-02-01 with the following updates:<br />
<br />
* KPP solver for gas-phase chemistry (as in GCv8-02-03)<br />
* Implement Bond 2007 BC/OC emissions (as in GCv8-02-02)<br />
* Apply bug fixes from GCv8-02-02 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-02#Previous_issues_now_resolved_in_v8-02-02 here]<br />
* Apply bug fixes from GCv8-02-03 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-03#Previous_issues_now_resolved_in_v8-02-03 here]<br />
* Apply bug fixes from GCv8-02-04 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-04#Previous_issues_now_resolved_in_v8-02-04 here]<br />
<br />
== Current Adjoint Code ==<br />
<br />
=== Features === <br />
* Meteorological fields<br />
** GEOS-3 <i>needs testing</i><br />
** GEOS-4<br />
** GEOS-5 <br />
* model resolution<br />
** 4 x 5<br />
** 2 x 2.5 <br />
* Forward model processes<br />
** convection<br />
** advection<br />
** PBL mixing<br />
** dry deposition<br />
** wet deposition<br />
** strat / trop exchange with LINOZ <br />
** NOy up fluxes <br />
** aerosols <br />
*** inorganic aerosol thermodynamics <br />
*** sulfate chemistry <br />
*** BC<br />
*** SOA, Dust, sea salt <i> needs doing </i><br />
*** aerosol surface area feedbacks <i> needs updating </i><br />
*** aerosol optical feedbacks <i> needs doing </i><br />
** emissions<br />
*** all standard emissions included<br />
* Simulation modes<br />
** full chemistry<br />
** tagged CO<br />
** tagged Ox <br />
** CO2<br />
** methane <i> in progress </i><br />
* Observational Operators<br />
** MOPITT CO column<br />
** SCIAMACHY CO column<br />
** AIRS CO column<br />
** IMPROVE PM2.5 (NO3, SO4, OC, BC) <i> needs updating </i><br />
** CASTNet (NH4+) <i> needs updating </i> <br />
** GOME / SCIAMACHY NO2 column <i> needs updating </i> <br />
*** using KNMI retrieval (Henze)<br />
*** using Dalhousie retrieval (Shim)<br />
** TES NH3 <br />
** TES O3 <br />
** GOSAT CO2 <br />
* Control parameters<br />
** Initial Conditions scaling factors (linear or log)<br />
** Emissions scaling factors (linear or log) <br />
*** NH3, primary BC/OC, SO2: anthropogenic, natural, bioburn, biomass, ship<br />
*** NOx: soil, aircraft, anthropogenic, biofuel, bioburn<br />
*** Lightning NOx: injection height, yield <i> in progress </i><br />
*** all other gas-phase tracers: anthropogenic, biofuel, bioburn <br />
* Adjoint sensitivities<br />
** w.r.t. all implemented control parameters<br />
** w.r.t Reaction Rate Parameters <br />
** w.r.t all emissions <br />
** of AQ attainment metrics <i> needs updating </i><br />
** of spatiotemporally averaged species concentrations (e.g., arctic O3) <br />
* Other<br />
** Inverse Hessian approximation <i> needs updating </i><br />
** off-diagonal covariance matrices <i> needs updating </i><br />
** 3D-Var <i> needs updating </i><br />
<br />
Features may be qualified as: <br />
* <i>needs testing</i>: an implemented feature that we haven't fully used yet<br />
* <i>needs updating</i>: a feature developed with a previous branch that has yet to be updated to GEOS-Chem v8 and the merged adjoint<br />
* <i>needs doing</i>: a feature nobody has tackled the adjoint of yet<br />
<br />
=== Primary code developers ===<br />
Monika Kopacz, Kumaresh Singh, Changsub Shim, Daven Henze<br />
<br />
=== Adjoint model lead scientist ===<br />
Daven Henze <br />
<br />
== Documentation ==<br />
<br />
=== User's guide ===<br />
A user's guide is available. http://adjoint.colorado.edu/%7Edaven/gcadj_std/GC_adj_man.pdf <br />
<br />
=== Code flowchart ===<br />
Meemong Lee has created a detailed flowchart of the inverse model code structure. http://adjoint.colorado.edu/~daven/gcadj_std/flowchart.pdf<br />
<br />
== Distribution and Use ==<br />
Code for the adjoint is distributed through a CVS server located at adjoint.colorado.edu. Contact Daven Henze to obtain an account on the server.<br />
<br />
Even if your office mate has a copy of the code, the best way to obtain the model is to get a CVS account for yourself and download a version from the repository. So please do not copy code directly from others or pass the code along to third parties. This vastly helps with tracking developments and keeping up with model updates. <br />
<br />
Use of the adjoint model code follows standard practice for GEOS-Chem. It is expected that any developments that come of individual applications based on this community model will eventually be given back to the community by incorporation of new developments into the standard adjoint code. New development should be submitted to Daven Henze for inclusion in the standard adjoint model code. <br />
<br />
== Giving credit for using the adjoint model ==<br />
<br />
We aim to make distribution of adjoint model code as immediate as possible. A consequence is that many features may not yet be publicly documented. Therefore, giving code developers due credit is of utmost importance. At this point, any use of the GEOS-Chem model adjoint should include as co-authors the primary developers: Daven Henze, Monika Kopacz, Kumaresh Singh and Changsub Shim. In trade, we provide user support. As the model matures and user support become less of an issue, these requirements will be relaxed. <br />
<br />
Authors of new additions to the standard code will be given due credit on the first round of publications to come of their development. Hence, additional co-authors may also be required if the application uses features that are newly developed by additional developers. <br />
<br />
Lastly, it is requested that users of the GEOS-Chem adjoint consider offering co-author ship to several additional scientists who have contributed to the adjoint code support and progress, such as Kevin Bowman, Adrian Sandu and Daniel Jacob. <br />
<br />
Overall, if you have any questions about authorship, even for a conference presentation, please contact Daven Henze. <br />
<br />
<br />
== Current GEOS-Chem Adjoint Research Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group <br />
!Description <br />
!Contact Person<br />
|-<br />
|CU Boulder<br />
|Aerosol precursors, CO2, O3; general adjoint code maintenance<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
|-<br />
|Harvard<br />
|Methane<br />
|[mailto:wecht@fas.harvard.edu Kevin Wecht]<br />
|-<br />
|Purdue University<br />
|Methane (SICAMACHY, AIRS and IASI)<br />
|[mailto:tang16@purdue.edu Jinyun Tang]<br />
|-<br />
|MIT<br />
|Aircraft emissions<br />
|[mailto:jaminkoo@mit.edu Jamin Koo]<br />
|-<br />
|Princeton<br />
|BC sensitivities, general adjoint code development<br />
|Monika Kopacz, mkopacz [at] princeton.edu<br />
|-<br />
|Dalhousie University<br />
|Lightning NOx emissions and impact on tropical ozone using the adjoint<br />
|[mailto:N.Bousserez@dal.ca Nicolas Bousserez]<br />
|-<br />
|JPL<br />
|Microwave Limb Sounder (MLS) Ozone assimilation<br />
|[mailto:meemong.lee@jpl.nasa.gov Meemong Lee]<br />
|-<br />
|JPL <br />
| TES ozone assimilation/attribution of ozone radiative forcing<br />
|[mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|-<br />
|University of Edinburgh<br />
|Quantifying the impact of boreal forest fires on tropospheric oxidants over the Atlantic<br />
|[mailto:mark.parrington@ed.ac.uk Mark Parrington]<br />
|-<br />
|US EPA<br />
|Integration with economic models for future emission inventory scenario development<br />
|[mailto:akhtar.farhan@epa.gov Farhan Akhtar]<br />
|-<br />
|Peking University<br />
|Satellite constraints on VOC emissions <br />
|[mailto:tmfu@pku.edu.cn May Fu]<br />
|-<br />
|CU Boulder<br />
|Aerosol precursor emissions<br />
|[mailto:alexander.turner@colorado.edu Alex Turner]<br />
|-<br />
|IAP.CAS<br />
|CO2 assimilation<br />
|[mailto:czh@mail.iap.ac.cn Chen]<br />
|}<br />
<br />
== Get Involved ==<br />
Support and development of the GEOS-Chem adjoint has clearly become a broad undertaking. In attempt to focus such developments, we've created a GC-adjoint mailing list. If you wish to become involved, you should add yourself to the GEOS-Chem adjoint email list by following the instructions posted [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_welcome_letter_for_new_users#Subscribing_to_the_GEOS-Chem_email_lists here]<br />
<br />
Kevin Bowman organizes bimonthly conference calls concerning current adjoint model activities.<br />
<br />
<br />
== Publications ==<br />
<br />
=== Journal Articles ===<br />
*Singh, K., Jardak, M., Sandu, A., Bowman, K., Lee, M., and Jones, D.: Construction of non-diagonal background error covariance matrices for global chemical data assimilation, Geosci. Model Dev. Discuss., 3, 1783-1827, doi:10.5194/gmdd-3-1783-2010, 2010. http://www.geosci-model-dev-discuss.net/3/1783/2010/gmdd-3-1783-2010.html<br />
<br />
*Kopacz, M., D. L. Mauzerall, J. Wang, E. M. Leibensperger, D. K. Henze, and K. Singh, Origin and radiative forcing of black carbon transported to the Himalayas and Tibetan Plateau, Atmos. Chem. Phys. Discuss., 10, 21615-2165. http://www.atmos-chem-phys.net/10/855/2010/acp-10-855-2010.html<br />
<br />
* Kopacz, M., D.J. Jacob, J.A. Fisher, J. A. Logan, L. Zhang, I. A. Megretskaia, R. M. Yantosca, K. Singh, D. K. Henze, J. P. Burrows, M. Buchwitz, I. Khlystova, W. W. McMillan, J. C. Gille, D. P. Edwards, A. Eldering, V. Thouret, and P. Nedelec (2010): Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), Atmos. Chem. Phys., 10, 855-876. http://www.atmos-chem-phys.net/10/855/2010/acp-10-855-2010.pdf<br />
<br />
* Kopacz, M., D. J. Jacob, D. K. Henze, C. L. Heald, D. G. Streets, and Q. Zhang (2009), A comparison of analytical and adjoint Bayesian inversion methods for constraining Asian sources of CO using satellite (MOPITT) measurements of CO columns, J. Geophys. Res., doi:0.1029/2007JD009264. http://acmg.seas.harvard.edu/publications/KopaczJGR2009_2007JD009264.pdf<br />
<br />
* Henze, D. K., J. H. Seinfeld and D. T. Shindell (2009), Inverse modeling and mapping U.S. air quality influences of inorganic PM2.5 precursor emissions with the adjoint of GEOS-Chem, Atmos. Chem. Phys., 9, 5877-5903.<br />
<br />
* Zhang, L., D. J. Jacob, M. Kopacz, D. K. Henze, K. Singh, and D. A. Jaffe (2009), Intercontinental source attribution of ozone pollution at western U.S. sites using an adjoint method, Geophys. Res. Lett., 36, L11810, doi:10.1029/2009GL037950<br />
<br />
* Henze, D. K., A. Hakami and J. H. Seinfeld (2007), Development of the adjoint of GEOS-Chem, Atmos. Chem. Phys., 7, 2413-2433.<br />
<br />
<br />
=== Conference proceedings === <br />
* Adjoint inversion of CO sources using combined MOPITT, SCIAMACHY and AIRS CO columns, presented by Monika Kopacz at the COSPAR Scientific Assembly, Montreal, July 18, 2008. http://acmg.seas.harvard.edu/presentations/powerpoints/mak2008/COSPAR_MKopacz_July2008.ppt<br />
<br />
* Singh, K., P. Eller, A. Sandu, D. K. Henze, K. Bowman, M. Kopacz, and M. Lee (2009), Towards the construction of a standard geos-chem adjoint model, ACM High Performance Computing Conference.<br />
<br />
* Kopacz, M., Mauzerall, D.L., Leibensperger, E.M., Wang, J., Henze, D.K., Singh, K., Shim, C. Identifying the origin and estimating the radiative forcing of BC in the Himalayas: an analysis using the global GEOS-Chem adjoint model, European Geophysical Union meeting, Vienna, May 4, 2010.<br />
<br />
* Kopacz, M., Jacob, D.J., Fisher, J.A., Logan, J.A., Zhang, L., Megretskaia, I.A., Yantosca, R.M., Singh, K., Henze, D.K., Burrows, J.P., Buchwitz, M., Khlystova, I., McMillan, W.W., Gille, J.C., Edwards, D.P., Eldering, A., Thouret, V., Nedelec, P. Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), European Geophysical Union meeting, Vienna, May 7, 2010.</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=GEOS-Chem_Adjoint&diff=5895GEOS-Chem Adjoint2011-01-10T01:22:12Z<p>Chen: /* Current GEOS-Chem Adjoint Research Projects (please add yours!) */</p>
<hr />
<div><big><big><strong>Adjoint and Data Assimilation Working Group</strong></big></big><br />
<br />
== Contact information ==<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|-<br />
|'''Adjoint Working Group Chair'''<br />
|[mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|-<br />
|-<br />
|'''Adjoint Model Scientist'''<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
|-<br />
|'''Adjoint Working Group email list'''<br />
|<tt>geos-chem-adjoint@seas.harvard.edu</tt><br />
|-<br />
|'''To subscribe to email list'''<br />
|Send email to [mailto:geos-chem-adjoint-join@seas.harvard.edu <tt>geos-chem-adjoint-join@seas.harvard.edu</tt>]<br />
|-<br />
|'''To unsubscribe from email list'''<br />
|Send email to [mailto:geos-chem-adjoint-leave@seas.harvard.edu <tt>geos-chem-adjoint-leave@seas.harvard.edu</tt>]<br />
|}<br />
<br />
== Historical Development ==<br />
Original work on the adjoint of GEOS-Chem v6 began in 2003, focusing on the adjoint of the offline aerosol simulation. By 2005, the adjoint was expanded to include a tagged CO simulation and a full chemistry simulation; an adjoint of GEOS-Chem v7 was also developed in the following years. Each of these branches of the adjoint code were been constructed in a hybrid fashion using a combination of automatic differentiation software ([http://www.autodiff.com/tamc TAMC], [http://people.cs.vt.edu/~asandu/Software/Kpp/ KPP]) and manual coding of both discrete and continuous adjoints. They shared many common elements yet had unique features for different applications. <br />
<br />
During the summer of 2009, the existing branches were merged and updated to bring the adjoint into alignment with the latest release of GEOS-Chem, v8-02-01. This merged adjoint model is now the standard adjoint code into which all further development efforts will be placed.<br />
<br />
== Current Forward Model Code ==<br />
<br />
The forward model on which the adjoint is based corresponds to GEOS-Chem v8-02-01 with the following updates:<br />
<br />
* KPP solver for gas-phase chemistry (as in GCv8-02-03)<br />
* Implement Bond 2007 BC/OC emissions (as in GCv8-02-02)<br />
* Apply bug fixes from GCv8-02-02 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-02#Previous_issues_now_resolved_in_v8-02-02 here]<br />
* Apply bug fixes from GCv8-02-03 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-03#Previous_issues_now_resolved_in_v8-02-03 here]<br />
* Apply bug fixes from GCv8-02-04 listed [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_v8-02-04#Previous_issues_now_resolved_in_v8-02-04 here]<br />
<br />
== Current Adjoint Code ==<br />
<br />
=== Features === <br />
* Meteorological fields<br />
** GEOS-3 <i>needs testing</i><br />
** GEOS-4<br />
** GEOS-5 <br />
* model resolution<br />
** 4 x 5<br />
** 2 x 2.5 <br />
* Forward model processes<br />
** convection<br />
** advection<br />
** PBL mixing<br />
** dry deposition<br />
** wet deposition<br />
** strat / trop exchange with LINOZ <br />
** NOy up fluxes <br />
** aerosols <br />
*** inorganic aerosol thermodynamics <br />
*** sulfate chemistry <br />
*** BC<br />
*** SOA, Dust, sea salt <i> needs doing </i><br />
*** aerosol surface area feedbacks <i> needs updating </i><br />
*** aerosol optical feedbacks <i> needs doing </i><br />
** emissions<br />
*** all standard emissions included<br />
* Simulation modes<br />
** full chemistry<br />
** tagged CO<br />
** tagged Ox <br />
** CO2<br />
** methane <i> in progress </i><br />
* Observational Operators<br />
** MOPITT CO column<br />
** SCIAMACHY CO column<br />
** AIRS CO column<br />
** IMPROVE PM2.5 (NO3, SO4, OC, BC) <i> needs updating </i><br />
** CASTNet (NH4+) <i> needs updating </i> <br />
** GOME / SCIAMACHY NO2 column <i> needs updating </i> <br />
*** using KNMI retrieval (Henze)<br />
*** using Dalhousie retrieval (Shim)<br />
** TES NH3 <br />
** TES O3 <br />
** GOSAT CO2 <br />
* Control parameters<br />
** Initial Conditions scaling factors (linear or log)<br />
** Emissions scaling factors (linear or log) <br />
*** NH3, primary BC/OC, SO2: anthropogenic, natural, bioburn, biomass, ship<br />
*** NOx: soil, aircraft, anthropogenic, biofuel, bioburn<br />
*** Lightning NOx: injection height, yield <i> in progress </i><br />
*** all other gas-phase tracers: anthropogenic, biofuel, bioburn <br />
* Adjoint sensitivities<br />
** w.r.t. all implemented control parameters<br />
** w.r.t Reaction Rate Parameters <br />
** w.r.t all emissions <br />
** of AQ attainment metrics <i> needs updating </i><br />
** of spatiotemporally averaged species concentrations (e.g., arctic O3) <br />
* Other<br />
** Inverse Hessian approximation <i> needs updating </i><br />
** off-diagonal covariance matrices <i> needs updating </i><br />
** 3D-Var <i> needs updating </i><br />
<br />
Features may be qualified as: <br />
* <i>needs testing</i>: an implemented feature that we haven't fully used yet<br />
* <i>needs updating</i>: a feature developed with a previous branch that has yet to be updated to GEOS-Chem v8 and the merged adjoint<br />
* <i>needs doing</i>: a feature nobody has tackled the adjoint of yet<br />
<br />
=== Primary code developers ===<br />
Monika Kopacz, Kumaresh Singh, Changsub Shim, Daven Henze<br />
<br />
=== Adjoint model lead scientist ===<br />
Daven Henze <br />
<br />
== Documentation ==<br />
<br />
=== User's guide ===<br />
A user's guide is available. http://adjoint.colorado.edu/%7Edaven/gcadj_std/GC_adj_man.pdf <br />
<br />
=== Code flowchart ===<br />
Meemong Lee has created a detailed flowchart of the inverse model code structure. http://adjoint.colorado.edu/~daven/gcadj_std/flowchart.pdf<br />
<br />
== Distribution and Use ==<br />
Code for the adjoint is distributed through a CVS server located at adjoint.colorado.edu. Contact Daven Henze to obtain an account on the server.<br />
<br />
Even if your office mate has a copy of the code, the best way to obtain the model is to get a CVS account for yourself and download a version from the repository. So please do not copy code directly from others or pass the code along to third parties. This vastly helps with tracking developments and keeping up with model updates. <br />
<br />
Use of the adjoint model code follows standard practice for GEOS-Chem. It is expected that any developments that come of individual applications based on this community model will eventually be given back to the community by incorporation of new developments into the standard adjoint code. New development should be submitted to Daven Henze for inclusion in the standard adjoint model code. <br />
<br />
== Giving credit for using the adjoint model ==<br />
<br />
We aim to make distribution of adjoint model code as immediate as possible. A consequence is that many features may not yet be publicly documented. Therefore, giving code developers due credit is of utmost importance. At this point, any use of the GEOS-Chem model adjoint should include as co-authors the primary developers: Daven Henze, Monika Kopacz, Kumaresh Singh and Changsub Shim. In trade, we provide user support. As the model matures and user support become less of an issue, these requirements will be relaxed. <br />
<br />
Authors of new additions to the standard code will be given due credit on the first round of publications to come of their development. Hence, additional co-authors may also be required if the application uses features that are newly developed by additional developers. <br />
<br />
Lastly, it is requested that users of the GEOS-Chem adjoint consider offering co-author ship to several additional scientists who have contributed to the adjoint code support and progress, such as Kevin Bowman, Adrian Sandu and Daniel Jacob. <br />
<br />
Overall, if you have any questions about authorship, even for a conference presentation, please contact Daven Henze. <br />
<br />
<br />
== Current GEOS-Chem Adjoint Research Projects (please add yours!) ==<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group <br />
!Description <br />
!Contact Person<br />
|-<br />
|CU Boulder<br />
|Aerosol precursors, CO2, O3; general adjoint code maintenance<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
|-<br />
|Harvard<br />
|Methane<br />
|[mailto:wecht@fas.harvard.edu Kevin Wecht]<br />
|-<br />
|Purdue University<br />
|Methane (SICAMACHY, AIRS and IASI)<br />
|[mailto:tang16@purdue.edu Jinyun Tang]<br />
|-<br />
|MIT<br />
|Aircraft emissions<br />
|[mailto:jaminkoo@mit.edu Jamin Koo]<br />
|-<br />
|Princeton<br />
|BC sensitivities, general adjoint code development<br />
|Monika Kopacz, mkopacz [at] princeton.edu<br />
|-<br />
|Dalhousie University<br />
|Lightning NOx emissions and impact on tropical ozone using the adjoint<br />
|[mailto:N.Bousserez@dal.ca Nicolas Bousserez]<br />
|-<br />
|JPL<br />
|Microwave Limb Sounder (MLS) Ozone assimilation<br />
|[mailto:meemong.lee@jpl.nasa.gov Meemong Lee]<br />
|-<br />
|JPL <br />
| TES ozone assimilation/attribution of ozone radiative forcing<br />
|[mailto:kevin.bowman@jpl.nasa.gov Kevin Bowman]<br />
|-<br />
|University of Edinburgh<br />
|Quantifying the impact of boreal forest fires on tropospheric oxidants over the Atlantic<br />
|[mailto:mark.parrington@ed.ac.uk Mark Parrington]<br />
|-<br />
|US EPA<br />
|Integration with economic models for future emission inventory scenario development<br />
|[mailto:akhtar.farhan@epa.gov Farhan Akhtar]<br />
|-<br />
|Peking University<br />
|Satellite constraints on VOC emissions <br />
|[mailto:tmfu@pku.edu.cn May Fu]<br />
|-<br />
|CU Boulder<br />
|Aerosol precursor emissions<br />
|[mailto:alexander.turner@colorado.edu Alex Turner]<br />
|-<br />
|IAP.CAS<br />
|CO2 assimilation<br />
|[mailto:czh@mail.iap.ac.cn]<br />
|}<br />
<br />
== Get Involved ==<br />
Support and development of the GEOS-Chem adjoint has clearly become a broad undertaking. In attempt to focus such developments, we've created a GC-adjoint mailing list. If you wish to become involved, you should add yourself to the GEOS-Chem adjoint email list by following the instructions posted [http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_welcome_letter_for_new_users#Subscribing_to_the_GEOS-Chem_email_lists here]<br />
<br />
Kevin Bowman organizes bimonthly conference calls concerning current adjoint model activities.<br />
<br />
<br />
== Publications ==<br />
<br />
=== Journal Articles ===<br />
*Singh, K., Jardak, M., Sandu, A., Bowman, K., Lee, M., and Jones, D.: Construction of non-diagonal background error covariance matrices for global chemical data assimilation, Geosci. Model Dev. Discuss., 3, 1783-1827, doi:10.5194/gmdd-3-1783-2010, 2010. http://www.geosci-model-dev-discuss.net/3/1783/2010/gmdd-3-1783-2010.html<br />
<br />
*Kopacz, M., D. L. Mauzerall, J. Wang, E. M. Leibensperger, D. K. Henze, and K. Singh, Origin and radiative forcing of black carbon transported to the Himalayas and Tibetan Plateau, Atmos. Chem. Phys. Discuss., 10, 21615-2165. http://www.atmos-chem-phys.net/10/855/2010/acp-10-855-2010.html<br />
<br />
* Kopacz, M., D.J. Jacob, J.A. Fisher, J. A. Logan, L. Zhang, I. A. Megretskaia, R. M. Yantosca, K. Singh, D. K. Henze, J. P. Burrows, M. Buchwitz, I. Khlystova, W. W. McMillan, J. C. Gille, D. P. Edwards, A. Eldering, V. Thouret, and P. Nedelec (2010): Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), Atmos. Chem. Phys., 10, 855-876. http://www.atmos-chem-phys.net/10/855/2010/acp-10-855-2010.pdf<br />
<br />
* Kopacz, M., D. J. Jacob, D. K. Henze, C. L. Heald, D. G. Streets, and Q. Zhang (2009), A comparison of analytical and adjoint Bayesian inversion methods for constraining Asian sources of CO using satellite (MOPITT) measurements of CO columns, J. Geophys. Res., doi:0.1029/2007JD009264. http://acmg.seas.harvard.edu/publications/KopaczJGR2009_2007JD009264.pdf<br />
<br />
* Henze, D. K., J. H. Seinfeld and D. T. Shindell (2009), Inverse modeling and mapping U.S. air quality influences of inorganic PM2.5 precursor emissions with the adjoint of GEOS-Chem, Atmos. Chem. Phys., 9, 5877-5903.<br />
<br />
* Zhang, L., D. J. Jacob, M. Kopacz, D. K. Henze, K. Singh, and D. A. Jaffe (2009), Intercontinental source attribution of ozone pollution at western U.S. sites using an adjoint method, Geophys. Res. Lett., 36, L11810, doi:10.1029/2009GL037950<br />
<br />
* Henze, D. K., A. Hakami and J. H. Seinfeld (2007), Development of the adjoint of GEOS-Chem, Atmos. Chem. Phys., 7, 2413-2433.<br />
<br />
<br />
=== Conference proceedings === <br />
* Adjoint inversion of CO sources using combined MOPITT, SCIAMACHY and AIRS CO columns, presented by Monika Kopacz at the COSPAR Scientific Assembly, Montreal, July 18, 2008. http://acmg.seas.harvard.edu/presentations/powerpoints/mak2008/COSPAR_MKopacz_July2008.ppt<br />
<br />
* Singh, K., P. Eller, A. Sandu, D. K. Henze, K. Bowman, M. Kopacz, and M. Lee (2009), Towards the construction of a standard geos-chem adjoint model, ACM High Performance Computing Conference.<br />
<br />
* Kopacz, M., Mauzerall, D.L., Leibensperger, E.M., Wang, J., Henze, D.K., Singh, K., Shim, C. Identifying the origin and estimating the radiative forcing of BC in the Himalayas: an analysis using the global GEOS-Chem adjoint model, European Geophysical Union meeting, Vienna, May 4, 2010.<br />
<br />
* Kopacz, M., Jacob, D.J., Fisher, J.A., Logan, J.A., Zhang, L., Megretskaia, I.A., Yantosca, R.M., Singh, K., Henze, D.K., Burrows, J.P., Buchwitz, M., Khlystova, I., McMillan, W.W., Gille, J.C., Edwards, D.P., Eldering, A., Thouret, V., Nedelec, P. Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), European Geophysical Union meeting, Vienna, May 7, 2010.</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=CO2_simulation&diff=4996CO2 simulation2010-08-05T01:28:52Z<p>Chen: /* CO<span><sub>2</sub> simulation user groups */</p>
<hr />
<div>This page contains information about the carbon dioxide (CO<span><sub>2</sub>) simulation in GEOS-Chem.<br />
<br />
== Overview ==<br />
<br />
The original GEOS-Chem CO<span><sub>2</sub> simulation was developed by Parv Suntharalingam (Suntharalingam et al., 2003; 2004), now at the University of East Anglia. A major update to the CO<span><sub>2</sub> simulation has been developed by Ray Nassar and Dylan B.A. Jones of the University of Toronto (Nassar et al., 2010). This update was delivered to the GEOS-Chem software development team at Harvard on 2010 April 1.'''''<br />
<br />
The update retains the original six CO<span><sub>2</sub> fluxes: fossil fuel, ocean exchange, biomass burning, biofuel burning, balanced terrestrial exchange (CASA) and net annual terrestrial exchange. New inventories are available as options for some of these fluxes and other new fluxes have been added such as CO<span><sub>2</sub> emissions from international shipping and aviation. There is also now an optional feature to include CO<span><sub>2</sub> production from the oxidation of CO, CH<span><sub>4</sub> and NMVOCs. This chemical source concept was first highlighted by Enting and Mansbridge (1991). Although a few attempts have been made by other groups in the past, this implementation will make GEOS-Chem the only 3-D global model in current use to account for the chemical production of CO<span><sub>2</sub>. The GEOS-Chem implementation uses an approach similar to that described in Suntharalingam et al. (2005), with some updated year-specific numbers and some other modifications described in Nassar et al. (2010).<br />
<br />
The full GEOS-Chem CO<span><sub>2</sub> update was applied to v8-02-01 (along with some patches). It is now undergoing testing and should be publicly available in the next GEOS-Chem release (v8-03-02). The model update will be accompanied by an update to the GEOS-Chem online manual. The references below are cited in the updated code's comments and online manual. <br />
<br />
=== Authors and collaborators ===<br />
* [mailto:ray.nassar@ec.gc.ca Ray Nassar] ''(Environment Canada and U. Toronto)''<br />
* [mailto:P.Suntharalingam@uea.ac.uk Parvada Suntharalingam] ''(U. East Anglia)''<br />
<br />
=== CO<span><sub>2</sub> simulation user groups ===<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group<br />
!Personnel<br />
!Projects<br />
|-valign="top"<br />
|[http://www.atmosp.physics.utoronto.ca/~jones/ University of Toronto]<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
| Model updates and application to inverse modeling<br />
|-valign="top"<br />
|Korea Environment Institute (KEI)]<br />
|[mailto:cshim@kei.re.kr Changsub Shim]<br />
|<br />
|-valign="top"<br />
|[http://spot.colorado.edu/~henzed/index.html University of Colorado Boulder]<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
| CO2 adjoint<br />
|-valign="top"<br />
|IAP,CAS<br />
|[mailto:czhjob@163.com Zhu J,Chen]<br />
| Inverse modeling of CO2 using satellite<br />
|-valign="top"<br />
|Add yours here!<br />
|<br />
|<br />
|}<br />
<br />
== Validation ==<br />
<br />
The updated CO<span><sub>2</sub> simulation will be incorporated into GEOS-Chem v8-03-02. In Nassar et al. (2010) model comparisons are made with GLOBALVEIW-CO2 (http://www.esrl.noaa.gov/gmd/ccgg/globalview/co2/co2_intro.html) and CONTRAIL (Comprehensive Observation Network for TRace gases by AIrLiner) measurements. In other work, the CO<span><sub>2</sub> simulation has also been compared with aircraft observations from the HIAPER Pole-to-Pole Observations (HIPPO) campaigns of 2009.<br />
<br />
== References ==<br />
<br />
#Andres, R. J., G. Marland, I. Fung, and E. Matthews, ''A 1&deg;x1&deg; distribution of carbon dioxide emissions from fossil fuel consumption and cement manufacture'', <u>Global Biogeochem. Cycles</u>, '''10''', 419–429, 1996.<br />
#Baker, D. F., et al., ''TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO<span><sub>2</sub> fluxes, 1988-2003'', <u>Global Biogeochem. Cycles</u>, '''20''', GB1002, doi:10.1029/2004GB002439, 2006.<br />
#Boden, T.A., G. Marland, and R.J. Andres, ''Global, Regional, and National Fossil-Fuel CO<span><sub>2</sub> Emissions''. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001, 2009.<br />
#Corbett & Koehler, ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, '''108''', D20, 4650, 2003.<br />
#Corbett, J. J., and H. W. Koehler, ''Considering alternative input parameters in an activity-based ship fuel consumption and emissions model'': Reply to comment by Øyvind Endresen et al. on ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, 109, 2004.<br />
#Duncan, B. N., R. V. Martin, A. C. Staudt, R. Yevich, and J. A. Logan, ''Interannual and seasonal variability of biomass burning emissions constrained by satellite observations'', <u>J. Geophys. Res.</u>, '''108'''(D2), 4100, doi:10.1029/2002JD002378, 2003.<br />
#Endresen, O, et al., ''A historical reconstruction of ships fuel consumption and emissions'', <u>J. Geophys. Res</u>, '''112''', D12301, 2007.<br />
#Enting, I. G. and Mansbridge, J. V.: Latitudinal distribution of sources and sinks of CO<span><sub>2</sub>: results of and inversion study, <u>Tellus B</u>, '''43''', 156–170, 1991.<br />
#Kim, B. Y., et al., ''System for assessing Aviation's Global Emissions (SAGE) Version 1.5 global Aviation Emissions Inventories for 2000-2004'', 2005.<br />
#Kim, B. Y., et al., ''System for assessing Aviation’s Global Emissions (SAGE), Part 1: Model description and inventory results'', <u>Transportation Research</u>, Part D 12, 325–346, 2007.<br />
#Le Quere, C. et al., ''Trends in the sources and sinks of carbon dioxide'', <u>Nature Geoscience</u>, doi:10.1038/ngeo689, 2009.<br />
#Nassar, R., D. B. A. Jones, P. Suntharalingam, J. M. Chen, R. J. Andres, K. J. Wecht, R. M. Yantosca, S. S. Kualwik, K. W. Bowman, J. R. Worden, T. Machida, H. Matsueda, ''Modeling global atmospheric CO<span><sub>2</sub> with improved emission inventories and CO<span><sub>2</sub> production from the oxidation of other carbon species, Geoscientific Model Development Discussions'', 3, 3, 889-948, 2010.<br />
#Olsen, S. C., and J. T. Randerson, ''Differences between surface and column atmospheric CO<span><sub>2</sub> and implications for carbon cycle research'', <u>J. Geophys. Res.</u>, '''109''', D02301, doi:10.1029/2003JD003968, 2004.<br />
#Potter, C. S., J. T. Randerson, C. B. Field, P. A. Matson, P. M. Vitousek, H. A. Mooney, and S. A. Klooster, ''Terrestrial ecosystem production: A process model based on global satellite and surface data'', <u>Global Biogeochem. Cycles</u>, 7, 811–841, 1993.<br />
#Sausen, R. and U. Schumann, ''Estimates of the Climate Response to Aircraft CO<span><sub>2</sub> and NO<span><sub>x</sub> Emissions Scenarios'', <u>Climate Change</u>, '''44''': 27-58, 2000.<br />
#Suntharalingam, P., C. M. Spivakovsky, J. A. Logan, and M. B. McElroy, ''Estimating the distribution of terrestrial CO<span><sub>2</sub> sources and sinks from atmospheric measurements: Sensitivity to configuration of the observation network'', <u>J. Geophys. Res.</u>, '''108'''(D15), 4452, doi:10.1029/2002JD002207, 2003.<br />
#Suntharalingam, P., D. J. Jacob, P. I. Palmer, J. A. Logan, R. M. Yantosca, Y. Xiao, M. J. Evans, D. G. Streets, S. L. Vay, and G. W. Sachse, ''Improved quantification of Chinese carbon fluxes using CO<span><sub>2</sub>/CO correlations in Asian outflow'', <u>J. Geophys. Res.</u>, '''109''', D18S18, doi:10.1029/2003JD004362, 2004.<br />
#Suntharalingam, P., J. T. Randerson, N. Krakauer, J. A. Logan, and D. J. Jacob, ''Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO<span><sub>2</sub>: Implications for inversion analyses'', <u>Global Biogeochem. Cycles</u>, '''19''', GB4003, doi:10.1029/2005GB002466, 2005.<br />
#Takahashi, T., R. A. Feely, R. Weiss, R. H. Wanninkhof, D. W. Chipman, S. C. Sutherland, T. T. Takahashi, ''Global air-sea flux of CO<span><sub>2</sub>: an estimate based on measurements of sea-air pCO<span><sub>2</sub> difference'', <u>Proc. Natl. Acad. Sci.</u>, '''94''', 8292–8299, 1997.<br />
#Takahashi, T., et al., ''Climatological mean and decadal change in surface ocean pCO<span><sub>2</sub>, and net sea–air CO<span><sub>2</sub> flux over the global oceans'', <u>Deep-Sea Res</u>. ''II'', doi:10.1016/j.dsr2.2008.12.009, 2009.<br />
#Wang, C., J.J. Corbett, J. Firestone, ''Modeling Energy Use and Emissions from North American Shipping: Application of the Ship Traffic, Energy, and Environment Model'', <u>Environ. Sci. Technol.</u>, '''41''', 3226-3232, 2008.<br />
#Wilkersen, J.T. et al., ''Analysis of emission data from global commercial Aviation: 2004 and 2006'', <u>Atmos. Chem. Phys. Disc.</u>, '''10''', 2945-2983, 2010.<br />
#Yevich, R., and J. A. Logan, ''An assessment of biofuel use and burning of agricultural waste in the developing world'', <u>Global Biogeochem. Cycles</u>, '''17'''(4), 1095, doi:10.1029/2002GB001952, 2003. [http://acmg.seas.harvard.edu/publications/yevich2003.pdf PDF]<br />
<br />
== Known issues ==<br />
<br />
Although GEOS-Chem v8-03-02 will be released with the functionality to run with monthly fossil fuel CO<span><sub>2</sub> emissions from CDIAC (R.J. Andres), the inventory files most likely will not be released until a later date, when the submitted paper Andres et al. (2010) is at a sufficient stage. Until then, annually-averaged fossil fuel CO<span><sub>2</sub> emissions must be selected in the input.geos file.<br />
<br />
--[[User:Bmy|Bob Y.]] 12:26, 29 March 2010 (EDT)<br />
<br />
--[[User:Ray|Ray Nassar]] 9:48, 25 June 2010 (EDT)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=CO2_simulation&diff=4935CO2 simulation2010-08-04T09:14:13Z<p>Chen: </p>
<hr />
<div>This page contains information about the carbon dioxide (CO<span><sub>2</sub>) simulation in GEOS-Chem.<br />
<br />
== Overview ==<br />
<br />
The original GEOS-Chem CO<span><sub>2</sub> simulation was developed by Parv Suntharalingam (Suntharalingam et al., 2003; 2004), now at the University of East Anglia. A major update to the CO<span><sub>2</sub> simulation has been developed by Ray Nassar and Dylan B.A. Jones of the University of Toronto (Nassar et al., 2010). This update was delivered to the GEOS-Chem software development team at Harvard on 2010 April 1.'''''<br />
<br />
The update retains the original six CO<span><sub>2</sub> fluxes: fossil fuel, ocean exchange, biomass burning, biofuel burning, balanced terrestrial exchange (CASA) and net annual terrestrial exchange. New inventories are available as options for some of these fluxes and other new fluxes have been added such as CO<span><sub>2</sub> emissions from international shipping and aviation. There is also now an optional feature to include CO<span><sub>2</sub> production from the oxidation of CO, CH<span><sub>4</sub> and NMVOCs. This chemical source concept was first highlighted by Enting and Mansbridge (1991). Although a few attempts have been made by other groups in the past, this implementation will make GEOS-Chem the only 3-D global model in current use to account for the chemical production of CO<span><sub>2</sub>. The GEOS-Chem implementation uses an approach similar to that described in Suntharalingam et al. (2005), with some updated year-specific numbers and some other modifications described in Nassar et al. (2010).<br />
<br />
The full GEOS-Chem CO<span><sub>2</sub> update was applied to v8-02-01 (along with some patches). It is now undergoing testing and should be publicly available in the next GEOS-Chem release (v8-03-02). The model update will be accompanied by an update to the GEOS-Chem online manual. The references below are cited in the updated code's comments and online manual. <br />
<br />
=== Authors and collaborators ===<br />
* [mailto:ray.nassar@ec.gc.ca Ray Nassar] ''(Environment Canada and U. Toronto)''<br />
* [mailto:P.Suntharalingam@uea.ac.uk Parvada Suntharalingam] ''(U. East Anglia)''<br />
<br />
=== CO<span><sub>2</sub> simulation user groups ===<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group<br />
!Personnel<br />
!Projects<br />
|-valign="top"<br />
|[http://www.atmosp.physics.utoronto.ca/~jones/ University of Toronto]<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
| Model updates and application to inverse modeling<br />
|-valign="top"<br />
|Korea Environment Institute (KEI)]<br />
|[mailto:cshim@kei.re.kr Changsub Shim]<br />
|<br />
|-valign="top"<br />
|[http://spot.colorado.edu/~henzed/index.html University of Colorado Boulder]<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
| CO2 adjoint<br />
|-valign="top"<br />
|IAP,CAS<br />
|[mailto:czhjob@163.com Zhu J,Chen]<br />
| inverse modeling of CO2 using satellite<br />
|-valign="top"<br />
|Add yours here!<br />
|<br />
|<br />
|}<br />
<br />
== Validation ==<br />
<br />
The updated CO<span><sub>2</sub> simulation will be incorporated into GEOS-Chem v8-03-02. In Nassar et al. (2010) model comparisons are made with GLOBALVEIW-CO2 (http://www.esrl.noaa.gov/gmd/ccgg/globalview/co2/co2_intro.html) and CONTRAIL (Comprehensive Observation Network for TRace gases by AIrLiner) measurements. In other work, the CO<span><sub>2</sub> simulation has also been compared with aircraft observations from the HIAPER Pole-to-Pole Observations (HIPPO) campaigns of 2009.<br />
<br />
== References ==<br />
<br />
#Andres, R. J., G. Marland, I. Fung, and E. Matthews, ''A 1&deg;x1&deg; distribution of carbon dioxide emissions from fossil fuel consumption and cement manufacture'', <u>Global Biogeochem. Cycles</u>, '''10''', 419–429, 1996.<br />
#Baker, D. F., et al., ''TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO<span><sub>2</sub> fluxes, 1988-2003'', <u>Global Biogeochem. Cycles</u>, '''20''', GB1002, doi:10.1029/2004GB002439, 2006.<br />
#Boden, T.A., G. Marland, and R.J. Andres, ''Global, Regional, and National Fossil-Fuel CO<span><sub>2</sub> Emissions''. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001, 2009.<br />
#Corbett & Koehler, ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, '''108''', D20, 4650, 2003.<br />
#Corbett, J. J., and H. W. Koehler, ''Considering alternative input parameters in an activity-based ship fuel consumption and emissions model'': Reply to comment by Øyvind Endresen et al. on ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, 109, 2004.<br />
#Duncan, B. N., R. V. Martin, A. C. Staudt, R. Yevich, and J. A. Logan, ''Interannual and seasonal variability of biomass burning emissions constrained by satellite observations'', <u>J. Geophys. Res.</u>, '''108'''(D2), 4100, doi:10.1029/2002JD002378, 2003.<br />
#Endresen, O, et al., ''A historical reconstruction of ships fuel consumption and emissions'', <u>J. Geophys. Res</u>, '''112''', D12301, 2007.<br />
#Enting, I. G. and Mansbridge, J. V.: Latitudinal distribution of sources and sinks of CO<span><sub>2</sub>: results of and inversion study, <u>Tellus B</u>, '''43''', 156–170, 1991.<br />
#Kim, B. Y., et al., ''System for assessing Aviation's Global Emissions (SAGE) Version 1.5 global Aviation Emissions Inventories for 2000-2004'', 2005.<br />
#Kim, B. Y., et al., ''System for assessing Aviation’s Global Emissions (SAGE), Part 1: Model description and inventory results'', <u>Transportation Research</u>, Part D 12, 325–346, 2007.<br />
#Le Quere, C. et al., ''Trends in the sources and sinks of carbon dioxide'', <u>Nature Geoscience</u>, doi:10.1038/ngeo689, 2009.<br />
#Nassar, R., D. B. A. Jones, P. Suntharalingam, J. M. Chen, R. J. Andres, K. J. Wecht, R. M. Yantosca, S. S. Kualwik, K. W. Bowman, J. R. Worden, T. Machida, H. Matsueda, ''Modeling global atmospheric CO<span><sub>2</sub> with improved emission inventories and CO<span><sub>2</sub> production from the oxidation of other carbon species, Geoscientific Model Development Discussions'', 3, 3, 889-948, 2010.<br />
#Olsen, S. C., and J. T. Randerson, ''Differences between surface and column atmospheric CO<span><sub>2</sub> and implications for carbon cycle research'', <u>J. Geophys. Res.</u>, '''109''', D02301, doi:10.1029/2003JD003968, 2004.<br />
#Potter, C. S., J. T. Randerson, C. B. Field, P. A. Matson, P. M. Vitousek, H. A. Mooney, and S. A. Klooster, ''Terrestrial ecosystem production: A process model based on global satellite and surface data'', <u>Global Biogeochem. Cycles</u>, 7, 811–841, 1993.<br />
#Sausen, R. and U. Schumann, ''Estimates of the Climate Response to Aircraft CO<span><sub>2</sub> and NO<span><sub>x</sub> Emissions Scenarios'', <u>Climate Change</u>, '''44''': 27-58, 2000.<br />
#Suntharalingam, P., C. M. Spivakovsky, J. A. Logan, and M. B. McElroy, ''Estimating the distribution of terrestrial CO<span><sub>2</sub> sources and sinks from atmospheric measurements: Sensitivity to configuration of the observation network'', <u>J. Geophys. Res.</u>, '''108'''(D15), 4452, doi:10.1029/2002JD002207, 2003.<br />
#Suntharalingam, P., D. J. Jacob, P. I. Palmer, J. A. Logan, R. M. Yantosca, Y. Xiao, M. J. Evans, D. G. Streets, S. L. Vay, and G. W. Sachse, ''Improved quantification of Chinese carbon fluxes using CO<span><sub>2</sub>/CO correlations in Asian outflow'', <u>J. Geophys. Res.</u>, '''109''', D18S18, doi:10.1029/2003JD004362, 2004.<br />
#Suntharalingam, P., J. T. Randerson, N. Krakauer, J. A. Logan, and D. J. Jacob, ''Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO<span><sub>2</sub>: Implications for inversion analyses'', <u>Global Biogeochem. Cycles</u>, '''19''', GB4003, doi:10.1029/2005GB002466, 2005.<br />
#Takahashi, T., R. A. Feely, R. Weiss, R. H. Wanninkhof, D. W. Chipman, S. C. Sutherland, T. T. Takahashi, ''Global air-sea flux of CO<span><sub>2</sub>: an estimate based on measurements of sea-air pCO<span><sub>2</sub> difference'', <u>Proc. Natl. Acad. Sci.</u>, '''94''', 8292–8299, 1997.<br />
#Takahashi, T., et al., ''Climatological mean and decadal change in surface ocean pCO<span><sub>2</sub>, and net sea–air CO<span><sub>2</sub> flux over the global oceans'', <u>Deep-Sea Res</u>. ''II'', doi:10.1016/j.dsr2.2008.12.009, 2009.<br />
#Wang, C., J.J. Corbett, J. Firestone, ''Modeling Energy Use and Emissions from North American Shipping: Application of the Ship Traffic, Energy, and Environment Model'', <u>Environ. Sci. Technol.</u>, '''41''', 3226-3232, 2008.<br />
#Wilkersen, J.T. et al., ''Analysis of emission data from global commercial Aviation: 2004 and 2006'', <u>Atmos. Chem. Phys. Disc.</u>, '''10''', 2945-2983, 2010.<br />
#Yevich, R., and J. A. Logan, ''An assessment of biofuel use and burning of agricultural waste in the developing world'', <u>Global Biogeochem. Cycles</u>, '''17'''(4), 1095, doi:10.1029/2002GB001952, 2003. [http://acmg.seas.harvard.edu/publications/yevich2003.pdf PDF]<br />
<br />
== Known issues ==<br />
<br />
Although GEOS-Chem v8-03-02 will be released with the functionality to run with monthly fossil fuel CO<span><sub>2</sub> emissions from CDIAC (R.J. Andres), the inventory files most likely will not be released until a later date, when the submitted paper Andres et al. (2010) is at a sufficient stage. Until then, annually-averaged fossil fuel CO<span><sub>2</sub> emissions must be selected in the input.geos file.<br />
<br />
--[[User:Bmy|Bob Y.]] 12:26, 29 March 2010 (EDT)<br />
<br />
--[[User:Ray|Ray Nassar]] 9:48, 25 June 2010 (EDT)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=CO2_simulation&diff=4934CO2 simulation2010-08-04T09:12:15Z<p>Chen: /* CO<span><sub>2</sub> simulation user groups */</p>
<hr />
<div>This page contains information about the carbon dioxide (CO<span><sub>2</sub>) simulation in GEOS-Chem.<br />
<br />
== Overview ==<br />
<br />
The original GEOS-Chem CO<span><sub>2</sub> simulation was developed by Parv Suntharalingam (Suntharalingam et al., 2003; 2004), now at the University of East Anglia. A major update to the CO<span><sub>2</sub> simulation has been developed by Ray Nassar and Dylan B.A. Jones of the University of Toronto (Nassar et al., 2010). This update was delivered to the GEOS-Chem software development team at Harvard on 2010 April 1.'''''<br />
<br />
The update retains the original six CO<span><sub>2</sub> fluxes: fossil fuel, ocean exchange, biomass burning, biofuel burning, balanced terrestrial exchange (CASA) and net annual terrestrial exchange. New inventories are available as options for some of these fluxes and other new fluxes have been added such as CO<span><sub>2</sub> emissions from international shipping and aviation. There is also now an optional feature to include CO<span><sub>2</sub> production from the oxidation of CO, CH<span><sub>4</sub> and NMVOCs. This chemical source concept was first highlighted by Enting and Mansbridge (1991). Although a few attempts have been made by other groups in the past, this implementation will make GEOS-Chem the only 3-D global model in current use to account for the chemical production of CO<span><sub>2</sub>. The GEOS-Chem implementation uses an approach similar to that described in Suntharalingam et al. (2005), with some updated year-specific numbers and some other modifications described in Nassar et al. (2010).<br />
<br />
The full GEOS-Chem CO<span><sub>2</sub> update was applied to v8-02-01 (along with some patches). It is now undergoing testing and should be publicly available in the next GEOS-Chem release (v8-03-02). The model update will be accompanied by an update to the GEOS-Chem online manual. The references below are cited in the updated code's comments and online manual. <br />
<br />
=== Authors and collaborators ===<br />
* [mailto:ray.nassar@ec.gc.ca Ray Nassar] ''(Environment Canada and U. Toronto)''<br />
* [mailto:P.Suntharalingam@uea.ac.uk Parvada Suntharalingam] ''(U. East Anglia)''<br />
<br />
=== CO<span><sub>2</sub> simulation user groups ===<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group<br />
!Personnel<br />
!Projects<br />
|-valign="top"<br />
|[http://www.atmosp.physics.utoronto.ca/~jones/ University of Toronto]<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
| Model updates and application to inverse modeling<br />
|-valign="top"<br />
|Korea Environment Institute (KEI)]<br />
|[mailto:cshim@kei.re.kr Changsub Shim]<br />
|<br />
|-valign="top"<br />
|[http://spot.colorado.edu/~henzed/index.html University of Colorado Boulder]<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
| CO2 adjoint<br />
|-valign="top"<br />
|IAP,CAS<br />
|[mailto:czhjob@163.com Zhu J,Chen]<br />
| inverse modeling of CO2 using satellite<br />
|-valign="top"<br />
|Add yours here!<br />
<br />
== Validation ==<br />
<br />
The updated CO<span><sub>2</sub> simulation will be incorporated into GEOS-Chem v8-03-02. In Nassar et al. (2010) model comparisons are made with GLOBALVEIW-CO2 (http://www.esrl.noaa.gov/gmd/ccgg/globalview/co2/co2_intro.html) and CONTRAIL (Comprehensive Observation Network for TRace gases by AIrLiner) measurements. In other work, the CO<span><sub>2</sub> simulation has also been compared with aircraft observations from the HIAPER Pole-to-Pole Observations (HIPPO) campaigns of 2009.<br />
<br />
== References ==<br />
<br />
#Andres, R. J., G. Marland, I. Fung, and E. Matthews, ''A 1&deg;x1&deg; distribution of carbon dioxide emissions from fossil fuel consumption and cement manufacture'', <u>Global Biogeochem. Cycles</u>, '''10''', 419–429, 1996.<br />
#Baker, D. F., et al., ''TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO<span><sub>2</sub> fluxes, 1988-2003'', <u>Global Biogeochem. Cycles</u>, '''20''', GB1002, doi:10.1029/2004GB002439, 2006.<br />
#Boden, T.A., G. Marland, and R.J. Andres, ''Global, Regional, and National Fossil-Fuel CO<span><sub>2</sub> Emissions''. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001, 2009.<br />
#Corbett & Koehler, ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, '''108''', D20, 4650, 2003.<br />
#Corbett, J. J., and H. W. Koehler, ''Considering alternative input parameters in an activity-based ship fuel consumption and emissions model'': Reply to comment by Øyvind Endresen et al. on ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, 109, 2004.<br />
#Duncan, B. N., R. V. Martin, A. C. Staudt, R. Yevich, and J. A. Logan, ''Interannual and seasonal variability of biomass burning emissions constrained by satellite observations'', <u>J. Geophys. Res.</u>, '''108'''(D2), 4100, doi:10.1029/2002JD002378, 2003.<br />
#Endresen, O, et al., ''A historical reconstruction of ships fuel consumption and emissions'', <u>J. Geophys. Res</u>, '''112''', D12301, 2007.<br />
#Enting, I. G. and Mansbridge, J. V.: Latitudinal distribution of sources and sinks of CO<span><sub>2</sub>: results of and inversion study, <u>Tellus B</u>, '''43''', 156–170, 1991.<br />
#Kim, B. Y., et al., ''System for assessing Aviation's Global Emissions (SAGE) Version 1.5 global Aviation Emissions Inventories for 2000-2004'', 2005.<br />
#Kim, B. Y., et al., ''System for assessing Aviation’s Global Emissions (SAGE), Part 1: Model description and inventory results'', <u>Transportation Research</u>, Part D 12, 325–346, 2007.<br />
#Le Quere, C. et al., ''Trends in the sources and sinks of carbon dioxide'', <u>Nature Geoscience</u>, doi:10.1038/ngeo689, 2009.<br />
#Nassar, R., D. B. A. Jones, P. Suntharalingam, J. M. Chen, R. J. Andres, K. J. Wecht, R. M. Yantosca, S. S. Kualwik, K. W. Bowman, J. R. Worden, T. Machida, H. Matsueda, ''Modeling global atmospheric CO<span><sub>2</sub> with improved emission inventories and CO<span><sub>2</sub> production from the oxidation of other carbon species, Geoscientific Model Development Discussions'', 3, 3, 889-948, 2010.<br />
#Olsen, S. C., and J. T. Randerson, ''Differences between surface and column atmospheric CO<span><sub>2</sub> and implications for carbon cycle research'', <u>J. Geophys. Res.</u>, '''109''', D02301, doi:10.1029/2003JD003968, 2004.<br />
#Potter, C. S., J. T. Randerson, C. B. Field, P. A. Matson, P. M. Vitousek, H. A. Mooney, and S. A. Klooster, ''Terrestrial ecosystem production: A process model based on global satellite and surface data'', <u>Global Biogeochem. Cycles</u>, 7, 811–841, 1993.<br />
#Sausen, R. and U. Schumann, ''Estimates of the Climate Response to Aircraft CO<span><sub>2</sub> and NO<span><sub>x</sub> Emissions Scenarios'', <u>Climate Change</u>, '''44''': 27-58, 2000.<br />
#Suntharalingam, P., C. M. Spivakovsky, J. A. Logan, and M. B. McElroy, ''Estimating the distribution of terrestrial CO<span><sub>2</sub> sources and sinks from atmospheric measurements: Sensitivity to configuration of the observation network'', <u>J. Geophys. Res.</u>, '''108'''(D15), 4452, doi:10.1029/2002JD002207, 2003.<br />
#Suntharalingam, P., D. J. Jacob, P. I. Palmer, J. A. Logan, R. M. Yantosca, Y. Xiao, M. J. Evans, D. G. Streets, S. L. Vay, and G. W. Sachse, ''Improved quantification of Chinese carbon fluxes using CO<span><sub>2</sub>/CO correlations in Asian outflow'', <u>J. Geophys. Res.</u>, '''109''', D18S18, doi:10.1029/2003JD004362, 2004.<br />
#Suntharalingam, P., J. T. Randerson, N. Krakauer, J. A. Logan, and D. J. Jacob, ''Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO<span><sub>2</sub>: Implications for inversion analyses'', <u>Global Biogeochem. Cycles</u>, '''19''', GB4003, doi:10.1029/2005GB002466, 2005.<br />
#Takahashi, T., R. A. Feely, R. Weiss, R. H. Wanninkhof, D. W. Chipman, S. C. Sutherland, T. T. Takahashi, ''Global air-sea flux of CO<span><sub>2</sub>: an estimate based on measurements of sea-air pCO<span><sub>2</sub> difference'', <u>Proc. Natl. Acad. Sci.</u>, '''94''', 8292–8299, 1997.<br />
#Takahashi, T., et al., ''Climatological mean and decadal change in surface ocean pCO<span><sub>2</sub>, and net sea–air CO<span><sub>2</sub> flux over the global oceans'', <u>Deep-Sea Res</u>. ''II'', doi:10.1016/j.dsr2.2008.12.009, 2009.<br />
#Wang, C., J.J. Corbett, J. Firestone, ''Modeling Energy Use and Emissions from North American Shipping: Application of the Ship Traffic, Energy, and Environment Model'', <u>Environ. Sci. Technol.</u>, '''41''', 3226-3232, 2008.<br />
#Wilkersen, J.T. et al., ''Analysis of emission data from global commercial Aviation: 2004 and 2006'', <u>Atmos. Chem. Phys. Disc.</u>, '''10''', 2945-2983, 2010.<br />
#Yevich, R., and J. A. Logan, ''An assessment of biofuel use and burning of agricultural waste in the developing world'', <u>Global Biogeochem. Cycles</u>, '''17'''(4), 1095, doi:10.1029/2002GB001952, 2003. [http://acmg.seas.harvard.edu/publications/yevich2003.pdf PDF]<br />
<br />
== Known issues ==<br />
<br />
Although GEOS-Chem v8-03-02 will be released with the functionality to run with monthly fossil fuel CO<span><sub>2</sub> emissions from CDIAC (R.J. Andres), the inventory files most likely will not be released until a later date, when the submitted paper Andres et al. (2010) is at a sufficient stage. Until then, annually-averaged fossil fuel CO<span><sub>2</sub> emissions must be selected in the input.geos file.<br />
<br />
--[[User:Bmy|Bob Y.]] 12:26, 29 March 2010 (EDT)<br />
<br />
--[[User:Ray|Ray Nassar]] 9:48, 25 June 2010 (EDT)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=CO2_simulation&diff=4933CO2 simulation2010-08-04T09:09:48Z<p>Chen: /* CO<span><sub>2</sub> simulation user groups */</p>
<hr />
<div>This page contains information about the carbon dioxide (CO<span><sub>2</sub>) simulation in GEOS-Chem.<br />
<br />
== Overview ==<br />
<br />
The original GEOS-Chem CO<span><sub>2</sub> simulation was developed by Parv Suntharalingam (Suntharalingam et al., 2003; 2004), now at the University of East Anglia. A major update to the CO<span><sub>2</sub> simulation has been developed by Ray Nassar and Dylan B.A. Jones of the University of Toronto (Nassar et al., 2010). This update was delivered to the GEOS-Chem software development team at Harvard on 2010 April 1.'''''<br />
<br />
The update retains the original six CO<span><sub>2</sub> fluxes: fossil fuel, ocean exchange, biomass burning, biofuel burning, balanced terrestrial exchange (CASA) and net annual terrestrial exchange. New inventories are available as options for some of these fluxes and other new fluxes have been added such as CO<span><sub>2</sub> emissions from international shipping and aviation. There is also now an optional feature to include CO<span><sub>2</sub> production from the oxidation of CO, CH<span><sub>4</sub> and NMVOCs. This chemical source concept was first highlighted by Enting and Mansbridge (1991). Although a few attempts have been made by other groups in the past, this implementation will make GEOS-Chem the only 3-D global model in current use to account for the chemical production of CO<span><sub>2</sub>. The GEOS-Chem implementation uses an approach similar to that described in Suntharalingam et al. (2005), with some updated year-specific numbers and some other modifications described in Nassar et al. (2010).<br />
<br />
The full GEOS-Chem CO<span><sub>2</sub> update was applied to v8-02-01 (along with some patches). It is now undergoing testing and should be publicly available in the next GEOS-Chem release (v8-03-02). The model update will be accompanied by an update to the GEOS-Chem online manual. The references below are cited in the updated code's comments and online manual. <br />
<br />
=== Authors and collaborators ===<br />
* [mailto:ray.nassar@ec.gc.ca Ray Nassar] ''(Environment Canada and U. Toronto)''<br />
* [mailto:P.Suntharalingam@uea.ac.uk Parvada Suntharalingam] ''(U. East Anglia)''<br />
<br />
=== CO<span><sub>2</sub> simulation user groups ===<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group<br />
!Personnel<br />
!Projects<br />
|-valign="top"<br />
|[http://www.atmosp.physics.utoronto.ca/~jones/ University of Toronto]<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
| Model updates and application to inverse modeling<br />
|-valign="top"<br />
|Korea Environment Institute (KEI)]<br />
|[mailto:cshim@kei.re.kr Changsub Shim]<br />
|<br />
|-valign="top"<br />
|[http://spot.colorado.edu/~henzed/index.html University of Colorado Boulder]<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
| CO2 adjoint<br />
|-valign="top"<br />
|IAP,CAS,<br />
|[mailto:czhjob@163.com Zhu J,Chen]<br />
| inverse modeling of CO2 using satellite<br />
|-valign="top"<br />
|Add yours here!<br />
<br />
== Validation ==<br />
<br />
The updated CO<span><sub>2</sub> simulation will be incorporated into GEOS-Chem v8-03-02. In Nassar et al. (2010) model comparisons are made with GLOBALVEIW-CO2 (http://www.esrl.noaa.gov/gmd/ccgg/globalview/co2/co2_intro.html) and CONTRAIL (Comprehensive Observation Network for TRace gases by AIrLiner) measurements. In other work, the CO<span><sub>2</sub> simulation has also been compared with aircraft observations from the HIAPER Pole-to-Pole Observations (HIPPO) campaigns of 2009.<br />
<br />
== References ==<br />
<br />
#Andres, R. J., G. Marland, I. Fung, and E. Matthews, ''A 1&deg;x1&deg; distribution of carbon dioxide emissions from fossil fuel consumption and cement manufacture'', <u>Global Biogeochem. Cycles</u>, '''10''', 419–429, 1996.<br />
#Baker, D. F., et al., ''TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO<span><sub>2</sub> fluxes, 1988-2003'', <u>Global Biogeochem. Cycles</u>, '''20''', GB1002, doi:10.1029/2004GB002439, 2006.<br />
#Boden, T.A., G. Marland, and R.J. Andres, ''Global, Regional, and National Fossil-Fuel CO<span><sub>2</sub> Emissions''. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001, 2009.<br />
#Corbett & Koehler, ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, '''108''', D20, 4650, 2003.<br />
#Corbett, J. J., and H. W. Koehler, ''Considering alternative input parameters in an activity-based ship fuel consumption and emissions model'': Reply to comment by Øyvind Endresen et al. on ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, 109, 2004.<br />
#Duncan, B. N., R. V. Martin, A. C. Staudt, R. Yevich, and J. A. Logan, ''Interannual and seasonal variability of biomass burning emissions constrained by satellite observations'', <u>J. Geophys. Res.</u>, '''108'''(D2), 4100, doi:10.1029/2002JD002378, 2003.<br />
#Endresen, O, et al., ''A historical reconstruction of ships fuel consumption and emissions'', <u>J. Geophys. Res</u>, '''112''', D12301, 2007.<br />
#Enting, I. G. and Mansbridge, J. V.: Latitudinal distribution of sources and sinks of CO<span><sub>2</sub>: results of and inversion study, <u>Tellus B</u>, '''43''', 156–170, 1991.<br />
#Kim, B. Y., et al., ''System for assessing Aviation's Global Emissions (SAGE) Version 1.5 global Aviation Emissions Inventories for 2000-2004'', 2005.<br />
#Kim, B. Y., et al., ''System for assessing Aviation’s Global Emissions (SAGE), Part 1: Model description and inventory results'', <u>Transportation Research</u>, Part D 12, 325–346, 2007.<br />
#Le Quere, C. et al., ''Trends in the sources and sinks of carbon dioxide'', <u>Nature Geoscience</u>, doi:10.1038/ngeo689, 2009.<br />
#Nassar, R., D. B. A. Jones, P. Suntharalingam, J. M. Chen, R. J. Andres, K. J. Wecht, R. M. Yantosca, S. S. Kualwik, K. W. Bowman, J. R. Worden, T. Machida, H. Matsueda, ''Modeling global atmospheric CO<span><sub>2</sub> with improved emission inventories and CO<span><sub>2</sub> production from the oxidation of other carbon species, Geoscientific Model Development Discussions'', 3, 3, 889-948, 2010.<br />
#Olsen, S. C., and J. T. Randerson, ''Differences between surface and column atmospheric CO<span><sub>2</sub> and implications for carbon cycle research'', <u>J. Geophys. Res.</u>, '''109''', D02301, doi:10.1029/2003JD003968, 2004.<br />
#Potter, C. S., J. T. Randerson, C. B. Field, P. A. Matson, P. M. Vitousek, H. A. Mooney, and S. A. Klooster, ''Terrestrial ecosystem production: A process model based on global satellite and surface data'', <u>Global Biogeochem. Cycles</u>, 7, 811–841, 1993.<br />
#Sausen, R. and U. Schumann, ''Estimates of the Climate Response to Aircraft CO<span><sub>2</sub> and NO<span><sub>x</sub> Emissions Scenarios'', <u>Climate Change</u>, '''44''': 27-58, 2000.<br />
#Suntharalingam, P., C. M. Spivakovsky, J. A. Logan, and M. B. McElroy, ''Estimating the distribution of terrestrial CO<span><sub>2</sub> sources and sinks from atmospheric measurements: Sensitivity to configuration of the observation network'', <u>J. Geophys. Res.</u>, '''108'''(D15), 4452, doi:10.1029/2002JD002207, 2003.<br />
#Suntharalingam, P., D. J. Jacob, P. I. Palmer, J. A. Logan, R. M. Yantosca, Y. Xiao, M. J. Evans, D. G. Streets, S. L. Vay, and G. W. Sachse, ''Improved quantification of Chinese carbon fluxes using CO<span><sub>2</sub>/CO correlations in Asian outflow'', <u>J. Geophys. Res.</u>, '''109''', D18S18, doi:10.1029/2003JD004362, 2004.<br />
#Suntharalingam, P., J. T. Randerson, N. Krakauer, J. A. Logan, and D. J. Jacob, ''Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO<span><sub>2</sub>: Implications for inversion analyses'', <u>Global Biogeochem. Cycles</u>, '''19''', GB4003, doi:10.1029/2005GB002466, 2005.<br />
#Takahashi, T., R. A. Feely, R. Weiss, R. H. Wanninkhof, D. W. Chipman, S. C. Sutherland, T. T. Takahashi, ''Global air-sea flux of CO<span><sub>2</sub>: an estimate based on measurements of sea-air pCO<span><sub>2</sub> difference'', <u>Proc. Natl. Acad. Sci.</u>, '''94''', 8292–8299, 1997.<br />
#Takahashi, T., et al., ''Climatological mean and decadal change in surface ocean pCO<span><sub>2</sub>, and net sea–air CO<span><sub>2</sub> flux over the global oceans'', <u>Deep-Sea Res</u>. ''II'', doi:10.1016/j.dsr2.2008.12.009, 2009.<br />
#Wang, C., J.J. Corbett, J. Firestone, ''Modeling Energy Use and Emissions from North American Shipping: Application of the Ship Traffic, Energy, and Environment Model'', <u>Environ. Sci. Technol.</u>, '''41''', 3226-3232, 2008.<br />
#Wilkersen, J.T. et al., ''Analysis of emission data from global commercial Aviation: 2004 and 2006'', <u>Atmos. Chem. Phys. Disc.</u>, '''10''', 2945-2983, 2010.<br />
#Yevich, R., and J. A. Logan, ''An assessment of biofuel use and burning of agricultural waste in the developing world'', <u>Global Biogeochem. Cycles</u>, '''17'''(4), 1095, doi:10.1029/2002GB001952, 2003. [http://acmg.seas.harvard.edu/publications/yevich2003.pdf PDF]<br />
<br />
== Known issues ==<br />
<br />
Although GEOS-Chem v8-03-02 will be released with the functionality to run with monthly fossil fuel CO<span><sub>2</sub> emissions from CDIAC (R.J. Andres), the inventory files most likely will not be released until a later date, when the submitted paper Andres et al. (2010) is at a sufficient stage. Until then, annually-averaged fossil fuel CO<span><sub>2</sub> emissions must be selected in the input.geos file.<br />
<br />
--[[User:Bmy|Bob Y.]] 12:26, 29 March 2010 (EDT)<br />
<br />
--[[User:Ray|Ray Nassar]] 9:48, 25 June 2010 (EDT)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=CO2_simulation&diff=4932CO2 simulation2010-08-04T09:07:22Z<p>Chen: /* CO<span><sub>2</sub> simulation user groups */</p>
<hr />
<div>This page contains information about the carbon dioxide (CO<span><sub>2</sub>) simulation in GEOS-Chem.<br />
<br />
== Overview ==<br />
<br />
The original GEOS-Chem CO<span><sub>2</sub> simulation was developed by Parv Suntharalingam (Suntharalingam et al., 2003; 2004), now at the University of East Anglia. A major update to the CO<span><sub>2</sub> simulation has been developed by Ray Nassar and Dylan B.A. Jones of the University of Toronto (Nassar et al., 2010). This update was delivered to the GEOS-Chem software development team at Harvard on 2010 April 1.'''''<br />
<br />
The update retains the original six CO<span><sub>2</sub> fluxes: fossil fuel, ocean exchange, biomass burning, biofuel burning, balanced terrestrial exchange (CASA) and net annual terrestrial exchange. New inventories are available as options for some of these fluxes and other new fluxes have been added such as CO<span><sub>2</sub> emissions from international shipping and aviation. There is also now an optional feature to include CO<span><sub>2</sub> production from the oxidation of CO, CH<span><sub>4</sub> and NMVOCs. This chemical source concept was first highlighted by Enting and Mansbridge (1991). Although a few attempts have been made by other groups in the past, this implementation will make GEOS-Chem the only 3-D global model in current use to account for the chemical production of CO<span><sub>2</sub>. The GEOS-Chem implementation uses an approach similar to that described in Suntharalingam et al. (2005), with some updated year-specific numbers and some other modifications described in Nassar et al. (2010).<br />
<br />
The full GEOS-Chem CO<span><sub>2</sub> update was applied to v8-02-01 (along with some patches). It is now undergoing testing and should be publicly available in the next GEOS-Chem release (v8-03-02). The model update will be accompanied by an update to the GEOS-Chem online manual. The references below are cited in the updated code's comments and online manual. <br />
<br />
=== Authors and collaborators ===<br />
* [mailto:ray.nassar@ec.gc.ca Ray Nassar] ''(Environment Canada and U. Toronto)''<br />
* [mailto:P.Suntharalingam@uea.ac.uk Parvada Suntharalingam] ''(U. East Anglia)''<br />
<br />
=== CO<span><sub>2</sub> simulation user groups ===<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group<br />
!Personnel<br />
!Projects<br />
|-valign="top"<br />
|[http://www.atmosp.physics.utoronto.ca/~jones/ University of Toronto]<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
| Model updates and application to inverse modeling<br />
|-valign="top"<br />
|Korea Environment Institute (KEI)]<br />
|[mailto:cshim@kei.re.kr Changsub Shim]<br />
|<br />
|-valign="top"<br />
|[http://spot.colorado.edu/~henzed/index.html University of Colorado Boulder]<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
| CO2 adjoint<br />
|-valign="top"<br />
|IAP,CAS,<br />
|[mailto:czhjob@163.com zhu J,Chen]<br />
| inverse modeling of CO2 using satellite<br />
|-valign="top"<br />
|Add yours here!<br />
<br />
== Validation ==<br />
<br />
The updated CO<span><sub>2</sub> simulation will be incorporated into GEOS-Chem v8-03-02. In Nassar et al. (2010) model comparisons are made with GLOBALVEIW-CO2 (http://www.esrl.noaa.gov/gmd/ccgg/globalview/co2/co2_intro.html) and CONTRAIL (Comprehensive Observation Network for TRace gases by AIrLiner) measurements. In other work, the CO<span><sub>2</sub> simulation has also been compared with aircraft observations from the HIAPER Pole-to-Pole Observations (HIPPO) campaigns of 2009.<br />
<br />
== References ==<br />
<br />
#Andres, R. J., G. Marland, I. Fung, and E. Matthews, ''A 1&deg;x1&deg; distribution of carbon dioxide emissions from fossil fuel consumption and cement manufacture'', <u>Global Biogeochem. Cycles</u>, '''10''', 419–429, 1996.<br />
#Baker, D. F., et al., ''TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO<span><sub>2</sub> fluxes, 1988-2003'', <u>Global Biogeochem. Cycles</u>, '''20''', GB1002, doi:10.1029/2004GB002439, 2006.<br />
#Boden, T.A., G. Marland, and R.J. Andres, ''Global, Regional, and National Fossil-Fuel CO<span><sub>2</sub> Emissions''. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001, 2009.<br />
#Corbett & Koehler, ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, '''108''', D20, 4650, 2003.<br />
#Corbett, J. J., and H. W. Koehler, ''Considering alternative input parameters in an activity-based ship fuel consumption and emissions model'': Reply to comment by Øyvind Endresen et al. on ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, 109, 2004.<br />
#Duncan, B. N., R. V. Martin, A. C. Staudt, R. Yevich, and J. A. Logan, ''Interannual and seasonal variability of biomass burning emissions constrained by satellite observations'', <u>J. Geophys. Res.</u>, '''108'''(D2), 4100, doi:10.1029/2002JD002378, 2003.<br />
#Endresen, O, et al., ''A historical reconstruction of ships fuel consumption and emissions'', <u>J. Geophys. Res</u>, '''112''', D12301, 2007.<br />
#Enting, I. G. and Mansbridge, J. V.: Latitudinal distribution of sources and sinks of CO<span><sub>2</sub>: results of and inversion study, <u>Tellus B</u>, '''43''', 156–170, 1991.<br />
#Kim, B. Y., et al., ''System for assessing Aviation's Global Emissions (SAGE) Version 1.5 global Aviation Emissions Inventories for 2000-2004'', 2005.<br />
#Kim, B. Y., et al., ''System for assessing Aviation’s Global Emissions (SAGE), Part 1: Model description and inventory results'', <u>Transportation Research</u>, Part D 12, 325–346, 2007.<br />
#Le Quere, C. et al., ''Trends in the sources and sinks of carbon dioxide'', <u>Nature Geoscience</u>, doi:10.1038/ngeo689, 2009.<br />
#Nassar, R., D. B. A. Jones, P. Suntharalingam, J. M. Chen, R. J. Andres, K. J. Wecht, R. M. Yantosca, S. S. Kualwik, K. W. Bowman, J. R. Worden, T. Machida, H. Matsueda, ''Modeling global atmospheric CO<span><sub>2</sub> with improved emission inventories and CO<span><sub>2</sub> production from the oxidation of other carbon species, Geoscientific Model Development Discussions'', 3, 3, 889-948, 2010.<br />
#Olsen, S. C., and J. T. Randerson, ''Differences between surface and column atmospheric CO<span><sub>2</sub> and implications for carbon cycle research'', <u>J. Geophys. Res.</u>, '''109''', D02301, doi:10.1029/2003JD003968, 2004.<br />
#Potter, C. S., J. T. Randerson, C. B. Field, P. A. Matson, P. M. Vitousek, H. A. Mooney, and S. A. Klooster, ''Terrestrial ecosystem production: A process model based on global satellite and surface data'', <u>Global Biogeochem. Cycles</u>, 7, 811–841, 1993.<br />
#Sausen, R. and U. Schumann, ''Estimates of the Climate Response to Aircraft CO<span><sub>2</sub> and NO<span><sub>x</sub> Emissions Scenarios'', <u>Climate Change</u>, '''44''': 27-58, 2000.<br />
#Suntharalingam, P., C. M. Spivakovsky, J. A. Logan, and M. B. McElroy, ''Estimating the distribution of terrestrial CO<span><sub>2</sub> sources and sinks from atmospheric measurements: Sensitivity to configuration of the observation network'', <u>J. Geophys. Res.</u>, '''108'''(D15), 4452, doi:10.1029/2002JD002207, 2003.<br />
#Suntharalingam, P., D. J. Jacob, P. I. Palmer, J. A. Logan, R. M. Yantosca, Y. Xiao, M. J. Evans, D. G. Streets, S. L. Vay, and G. W. Sachse, ''Improved quantification of Chinese carbon fluxes using CO<span><sub>2</sub>/CO correlations in Asian outflow'', <u>J. Geophys. Res.</u>, '''109''', D18S18, doi:10.1029/2003JD004362, 2004.<br />
#Suntharalingam, P., J. T. Randerson, N. Krakauer, J. A. Logan, and D. J. Jacob, ''Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO<span><sub>2</sub>: Implications for inversion analyses'', <u>Global Biogeochem. Cycles</u>, '''19''', GB4003, doi:10.1029/2005GB002466, 2005.<br />
#Takahashi, T., R. A. Feely, R. Weiss, R. H. Wanninkhof, D. W. Chipman, S. C. Sutherland, T. T. Takahashi, ''Global air-sea flux of CO<span><sub>2</sub>: an estimate based on measurements of sea-air pCO<span><sub>2</sub> difference'', <u>Proc. Natl. Acad. Sci.</u>, '''94''', 8292–8299, 1997.<br />
#Takahashi, T., et al., ''Climatological mean and decadal change in surface ocean pCO<span><sub>2</sub>, and net sea–air CO<span><sub>2</sub> flux over the global oceans'', <u>Deep-Sea Res</u>. ''II'', doi:10.1016/j.dsr2.2008.12.009, 2009.<br />
#Wang, C., J.J. Corbett, J. Firestone, ''Modeling Energy Use and Emissions from North American Shipping: Application of the Ship Traffic, Energy, and Environment Model'', <u>Environ. Sci. Technol.</u>, '''41''', 3226-3232, 2008.<br />
#Wilkersen, J.T. et al., ''Analysis of emission data from global commercial Aviation: 2004 and 2006'', <u>Atmos. Chem. Phys. Disc.</u>, '''10''', 2945-2983, 2010.<br />
#Yevich, R., and J. A. Logan, ''An assessment of biofuel use and burning of agricultural waste in the developing world'', <u>Global Biogeochem. Cycles</u>, '''17'''(4), 1095, doi:10.1029/2002GB001952, 2003. [http://acmg.seas.harvard.edu/publications/yevich2003.pdf PDF]<br />
<br />
== Known issues ==<br />
<br />
Although GEOS-Chem v8-03-02 will be released with the functionality to run with monthly fossil fuel CO<span><sub>2</sub> emissions from CDIAC (R.J. Andres), the inventory files most likely will not be released until a later date, when the submitted paper Andres et al. (2010) is at a sufficient stage. Until then, annually-averaged fossil fuel CO<span><sub>2</sub> emissions must be selected in the input.geos file.<br />
<br />
--[[User:Bmy|Bob Y.]] 12:26, 29 March 2010 (EDT)<br />
<br />
--[[User:Ray|Ray Nassar]] 9:48, 25 June 2010 (EDT)</div>Chenhttps://wiki.seas.harvard.edu/geos-chem/index.php?title=CO2_simulation&diff=4931CO2 simulation2010-08-04T09:05:00Z<p>Chen: /* CO<span><sub>2</sub> simulation user groups */</p>
<hr />
<div>This page contains information about the carbon dioxide (CO<span><sub>2</sub>) simulation in GEOS-Chem.<br />
<br />
== Overview ==<br />
<br />
The original GEOS-Chem CO<span><sub>2</sub> simulation was developed by Parv Suntharalingam (Suntharalingam et al., 2003; 2004), now at the University of East Anglia. A major update to the CO<span><sub>2</sub> simulation has been developed by Ray Nassar and Dylan B.A. Jones of the University of Toronto (Nassar et al., 2010). This update was delivered to the GEOS-Chem software development team at Harvard on 2010 April 1.'''''<br />
<br />
The update retains the original six CO<span><sub>2</sub> fluxes: fossil fuel, ocean exchange, biomass burning, biofuel burning, balanced terrestrial exchange (CASA) and net annual terrestrial exchange. New inventories are available as options for some of these fluxes and other new fluxes have been added such as CO<span><sub>2</sub> emissions from international shipping and aviation. There is also now an optional feature to include CO<span><sub>2</sub> production from the oxidation of CO, CH<span><sub>4</sub> and NMVOCs. This chemical source concept was first highlighted by Enting and Mansbridge (1991). Although a few attempts have been made by other groups in the past, this implementation will make GEOS-Chem the only 3-D global model in current use to account for the chemical production of CO<span><sub>2</sub>. The GEOS-Chem implementation uses an approach similar to that described in Suntharalingam et al. (2005), with some updated year-specific numbers and some other modifications described in Nassar et al. (2010).<br />
<br />
The full GEOS-Chem CO<span><sub>2</sub> update was applied to v8-02-01 (along with some patches). It is now undergoing testing and should be publicly available in the next GEOS-Chem release (v8-03-02). The model update will be accompanied by an update to the GEOS-Chem online manual. The references below are cited in the updated code's comments and online manual. <br />
<br />
=== Authors and collaborators ===<br />
* [mailto:ray.nassar@ec.gc.ca Ray Nassar] ''(Environment Canada and U. Toronto)''<br />
* [mailto:P.Suntharalingam@uea.ac.uk Parvada Suntharalingam] ''(U. East Anglia)''<br />
<br />
=== CO<span><sub>2</sub> simulation user groups ===<br />
<br />
{| border=1 cellspacing=0 cellpadding=5<br />
|- bgcolor="#cccccc"<br />
!User Group<br />
!Personnel<br />
!Projects<br />
|-valign="top"<br />
|[http://www.atmosp.physics.utoronto.ca/~jones/ University of Toronto]<br />
|[mailto:ray.nassar@ec.gc.ca Ray Nassar]<br />
| Model updates and application to inverse modeling<br />
|-valign="top"<br />
|Korea Environment Institute (KEI)]<br />
|[mailto:cshim@kei.re.kr Changsub Shim]<br />
|<br />
|-valign="top"<br />
|[http://spot.colorado.edu/~henzed/index.html University of Colorado Boulder]<br />
|[mailto:daven.henze@colorado.edu Daven Henze]<br />
| CO2 adjoint<br />
|-valign="top"<br />
|IAP,CAS,<br />
|[mailto:czhjob@163.com zhu J,Chen]<br />
| inverse modeling of CO2 using satellite<br />
|Add yours here!<br />
<br />
== Validation ==<br />
<br />
The updated CO<span><sub>2</sub> simulation will be incorporated into GEOS-Chem v8-03-02. In Nassar et al. (2010) model comparisons are made with GLOBALVEIW-CO2 (http://www.esrl.noaa.gov/gmd/ccgg/globalview/co2/co2_intro.html) and CONTRAIL (Comprehensive Observation Network for TRace gases by AIrLiner) measurements. In other work, the CO<span><sub>2</sub> simulation has also been compared with aircraft observations from the HIAPER Pole-to-Pole Observations (HIPPO) campaigns of 2009.<br />
<br />
== References ==<br />
<br />
#Andres, R. J., G. Marland, I. Fung, and E. Matthews, ''A 1&deg;x1&deg; distribution of carbon dioxide emissions from fossil fuel consumption and cement manufacture'', <u>Global Biogeochem. Cycles</u>, '''10''', 419–429, 1996.<br />
#Baker, D. F., et al., ''TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO<span><sub>2</sub> fluxes, 1988-2003'', <u>Global Biogeochem. Cycles</u>, '''20''', GB1002, doi:10.1029/2004GB002439, 2006.<br />
#Boden, T.A., G. Marland, and R.J. Andres, ''Global, Regional, and National Fossil-Fuel CO<span><sub>2</sub> Emissions''. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001, 2009.<br />
#Corbett & Koehler, ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, '''108''', D20, 4650, 2003.<br />
#Corbett, J. J., and H. W. Koehler, ''Considering alternative input parameters in an activity-based ship fuel consumption and emissions model'': Reply to comment by Øyvind Endresen et al. on ''Updated emissions from ocean shipping'', <u>J. Geophys. Res.</u>, 109, 2004.<br />
#Duncan, B. N., R. V. Martin, A. C. Staudt, R. Yevich, and J. A. Logan, ''Interannual and seasonal variability of biomass burning emissions constrained by satellite observations'', <u>J. Geophys. Res.</u>, '''108'''(D2), 4100, doi:10.1029/2002JD002378, 2003.<br />
#Endresen, O, et al., ''A historical reconstruction of ships fuel consumption and emissions'', <u>J. Geophys. Res</u>, '''112''', D12301, 2007.<br />
#Enting, I. G. and Mansbridge, J. V.: Latitudinal distribution of sources and sinks of CO<span><sub>2</sub>: results of and inversion study, <u>Tellus B</u>, '''43''', 156–170, 1991.<br />
#Kim, B. Y., et al., ''System for assessing Aviation's Global Emissions (SAGE) Version 1.5 global Aviation Emissions Inventories for 2000-2004'', 2005.<br />
#Kim, B. Y., et al., ''System for assessing Aviation’s Global Emissions (SAGE), Part 1: Model description and inventory results'', <u>Transportation Research</u>, Part D 12, 325–346, 2007.<br />
#Le Quere, C. et al., ''Trends in the sources and sinks of carbon dioxide'', <u>Nature Geoscience</u>, doi:10.1038/ngeo689, 2009.<br />
#Nassar, R., D. B. A. Jones, P. Suntharalingam, J. M. Chen, R. J. Andres, K. J. Wecht, R. M. Yantosca, S. S. Kualwik, K. W. Bowman, J. R. Worden, T. Machida, H. Matsueda, ''Modeling global atmospheric CO<span><sub>2</sub> with improved emission inventories and CO<span><sub>2</sub> production from the oxidation of other carbon species, Geoscientific Model Development Discussions'', 3, 3, 889-948, 2010.<br />
#Olsen, S. C., and J. T. Randerson, ''Differences between surface and column atmospheric CO<span><sub>2</sub> and implications for carbon cycle research'', <u>J. Geophys. Res.</u>, '''109''', D02301, doi:10.1029/2003JD003968, 2004.<br />
#Potter, C. S., J. T. Randerson, C. B. Field, P. A. Matson, P. M. Vitousek, H. A. Mooney, and S. A. Klooster, ''Terrestrial ecosystem production: A process model based on global satellite and surface data'', <u>Global Biogeochem. Cycles</u>, 7, 811–841, 1993.<br />
#Sausen, R. and U. Schumann, ''Estimates of the Climate Response to Aircraft CO<span><sub>2</sub> and NO<span><sub>x</sub> Emissions Scenarios'', <u>Climate Change</u>, '''44''': 27-58, 2000.<br />
#Suntharalingam, P., C. M. Spivakovsky, J. A. Logan, and M. B. McElroy, ''Estimating the distribution of terrestrial CO<span><sub>2</sub> sources and sinks from atmospheric measurements: Sensitivity to configuration of the observation network'', <u>J. Geophys. Res.</u>, '''108'''(D15), 4452, doi:10.1029/2002JD002207, 2003.<br />
#Suntharalingam, P., D. J. Jacob, P. I. Palmer, J. A. Logan, R. M. Yantosca, Y. Xiao, M. J. Evans, D. G. Streets, S. L. Vay, and G. W. Sachse, ''Improved quantification of Chinese carbon fluxes using CO<span><sub>2</sub>/CO correlations in Asian outflow'', <u>J. Geophys. Res.</u>, '''109''', D18S18, doi:10.1029/2003JD004362, 2004.<br />
#Suntharalingam, P., J. T. Randerson, N. Krakauer, J. A. Logan, and D. J. Jacob, ''Influence of reduced carbon emissions and oxidation on the distribution of atmospheric CO<span><sub>2</sub>: Implications for inversion analyses'', <u>Global Biogeochem. Cycles</u>, '''19''', GB4003, doi:10.1029/2005GB002466, 2005.<br />
#Takahashi, T., R. A. Feely, R. Weiss, R. H. Wanninkhof, D. W. Chipman, S. C. Sutherland, T. T. Takahashi, ''Global air-sea flux of CO<span><sub>2</sub>: an estimate based on measurements of sea-air pCO<span><sub>2</sub> difference'', <u>Proc. Natl. Acad. Sci.</u>, '''94''', 8292–8299, 1997.<br />
#Takahashi, T., et al., ''Climatological mean and decadal change in surface ocean pCO<span><sub>2</sub>, and net sea–air CO<span><sub>2</sub> flux over the global oceans'', <u>Deep-Sea Res</u>. ''II'', doi:10.1016/j.dsr2.2008.12.009, 2009.<br />
#Wang, C., J.J. Corbett, J. Firestone, ''Modeling Energy Use and Emissions from North American Shipping: Application of the Ship Traffic, Energy, and Environment Model'', <u>Environ. Sci. Technol.</u>, '''41''', 3226-3232, 2008.<br />
#Wilkersen, J.T. et al., ''Analysis of emission data from global commercial Aviation: 2004 and 2006'', <u>Atmos. Chem. Phys. Disc.</u>, '''10''', 2945-2983, 2010.<br />
#Yevich, R., and J. A. Logan, ''An assessment of biofuel use and burning of agricultural waste in the developing world'', <u>Global Biogeochem. Cycles</u>, '''17'''(4), 1095, doi:10.1029/2002GB001952, 2003. [http://acmg.seas.harvard.edu/publications/yevich2003.pdf PDF]<br />
<br />
== Known issues ==<br />
<br />
Although GEOS-Chem v8-03-02 will be released with the functionality to run with monthly fossil fuel CO<span><sub>2</sub> emissions from CDIAC (R.J. Andres), the inventory files most likely will not be released until a later date, when the submitted paper Andres et al. (2010) is at a sufficient stage. Until then, annually-averaged fossil fuel CO<span><sub>2</sub> emissions must be selected in the input.geos file.<br />
<br />
--[[User:Bmy|Bob Y.]] 12:26, 29 March 2010 (EDT)<br />
<br />
--[[User:Ray|Ray Nassar]] 9:48, 25 June 2010 (EDT)</div>Chen