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'''''NOTE: Page under construction'''''
__FORCETOC__
'''''[[Aerosol-only simulation|Previous]] | [[CO2 simulation|Next]] | [[Guide to GEOS-Chem simulations]]'''''
#[[Simulations using KPP-built mechanisms|Simulations using KPP-built mechanisms (carbon, fullchem, Hg)]]
#[[Aerosol-only simulation]]
#<span style="color:blue">'''CH4 simulation'''</span>
#[[CO2 simulation]]
#[[Metals simulation]]
#[[POPs simulation]]
#[[Tagged CO simulation]]
#[[Tagged O3 simulation]]
#[[TransportTracers simulation]]


This page contains information about the methane (CH4) simulation in GEOS-Chem.


== Overview ==
== Overview ==
 
This page contains information about the methane (CH4) simulation in GEOS-Chem.
The CH4 simulation in GEOS-Chem ...
 
=== Authors and collaborators ===
* [mailto:cpickett@seas.harvard.edu Christopher Pickett-Heaps]  ''(Harvard)''
* [mailto:kevin.wecht@gmail.com Kevin Wecht] ''(Harvard)''
* Jerome Drevet ''(formerly @ EPFL)''
* James Wang ''(formerly @ Harvard)''


=== CH4 simulation user groups ===
=== CH4 simulation user groups ===


{| border=1 cellspacing=0 cellpadding=5
See [[Carbon_Cycle_Working_Group#Current_Carbon_Cycle_Projects_.28please_add_yours.21.29|this post on the ''Carbon Cycle Working Group'' wiki page]].
|- bgcolor="#cccccc"
!User Group
!Personnel
!Projects
|-valign="top"
|[http://acmg.seas.harvard.edu/ Harvard University]
|[mailto:cpickett@seas.harvard.edu Christopher Pickett-Heaps]<br>[mailto:kevin.wecht@gmail.com Kevin Wecht]
|Methane sources in the Arctic
|-valign="top"
|U. Wollongong
|[mailto:cm700@uow.edu.au Chris Chan Miller]
|Methane sources in tropical Australia
 
|}
 
== Validation ==
 
== Planned updates ==
 
===  Update methane emissions and add capability for North America nested grid ===
 
Note: This update is slated to be incorporated into [[GEOS-Chem v9-01-03]] or later.
 
'''''[mailto:wecht@fas.harvard.edu Kevin Wecht] wrote:'''''
 
:I have some GEOS-Chem methane updates that I'd like to add to the standard code.
 
:#GFED emissions - I've updated GFED-2 and GFED-3 biomass burning to include methane emissions.
:#Methane simulation - I've updated emissions and error catches to make the simulation compatible with the nested simulation over North America. I added linearized CH4 chemistry from GMI output (CH4 loss frequencies generated by Lee Murray). These changes should be made to the data directory:
 
:::a. Replace Carbon_soil, Carbon_litter, and Wetfrac files in data directory (for all horizontal resolutions)
:::b. Add 2010-2011 TSKIN and GWETTOP files to data directory (for all horizontal resolutions)
:::c. Add nested north american OH files to OH directory
:::d. Add biofuel emissions to data directory (for all horizontal resolutions)
:::e. Add all emission files to data directory for nested North America simulation
 
--[[User:Melissa Payer|Melissa Payer]] 17:35, 2 February 2012 (EST)


== References ==
== References ==


== Known issues ==
#Bloom, A. A., Bowman, K. W., Lee, M., Turner, A. J., Schroeder, R., Worden, J. R., Weidner, R., McDonald, K. C., and Jacob, D. J.: A global wetland methane emissions and uncertainty dataset for atmospheric chemical transport models (WetCHARTs version 1.0), Geosci. Model Dev., 10, 2141-2156, https://doi.org/10.5194/gmd-10-2141-2017, 2017.
 
#Sheng, J.-X., D. J. Jacob, J.D. Maasakkers, M.P. Sulprizio, D. Zavala-Areiza, and S. Hamburg, A high-resolution (0.1ox0.1o) inventory of methane emissions from Canadian and Mexican oil and gas systems, Atmos. Environ., 158, 211-215, 2017. [[http://www.sciencedirect.com/science/article/pii/S1352231017301164 PDF]]
=== Error reading GWETTOP fields ===
#Maasakkers, J.D., D.J.Jacob, M.P. Sulprizio, A.J. Turner, M. Weitz, T. Wirth, C. Hight, M. DeFigueiredo, M. Desai, R. Schmeltz, L. Hockstad, A.A. Bloom, K.W. Bowman, S. Jeong, and M.L. Fischer, Gridded national inventory of U.S. methane emissions, Environ. Sci. Technol., 50, 13123−13133, 2016. [[http://pubs.acs.org/doi/pdf/10.1021/acs.est.6b02878 PDF]]
 
#Turner, A. J., Jacob, D. J., Wecht, K. J., Maasakkers, J. D., Biraud, S. C., Boesch, H., Bowman, K. W., Deutscher, N. M., Dubey, M. K., Griffith, D. W. T., Hase, F., Kuze, A., Notholt, J., Ohyama, H., Parker, R., Payne, V. H., Sussmann, R., Velazco, V. A., Warneke, T., Wennberg, P. O., and Wunch, D.: ''Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data'', <u>Atmos. Chem. Phys. Discuss.</u>, 15, 4495-4536, doi:10.5194/acpd-15-4495-2015, 2015.
There is a file read error in the current CH4 simulation. We will fix this issue in [[GEOS-Chem v9-01-03]].
#Turner, A. J. and Jacob, D. J.: ''Balancing aggregation and smoothing errors in inverse models'', <u>Atmos. Chem. Phys. Discuss.</u>, 15, 1001-1026, doi:10.5194/acpd-15-1001-2015, 2015.
 
#Wecht, K.J., D.J. Jacob, C. Frankenberg, Z. Jiang, and D.R. Blake, ''Mapping of North America methane emissions with high spatial resolution by inversion of SCIAMACHY satellite data'', submitted to <u>J. Geophys. Res.</u>, 2014.
In RICE_EMIS (global_ch4_mod.F), XTAU is being reset to the wrong value when GEWTTOP is read. Kevin Wecht provided a fix that accounts for different availabilities of GEOS-4 and GEOS-5 met fields. Prior to setting FILENAME for GWETTOP , add the following:
#Wecht, K.J., D.J. Jacob, M.P. Sulprizio, G.W. Santoni, S.C. Wofsy, R. Parker, H. Bösch, and J.R. Worden, ''Spatially resolving methane emissions in California: constraints from the CalNex aircraft campaign and from present (GOSAT, TES) and future (TROPOMI, geostationary) satellite observations'', <u>Atm. Chem. Phys. Discuss.</u>, '''14''', 4119-4198, doi:10.5194/acpd-14-4119-2014, 2014.
 
#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'', <u>Atmos. Chem. Phys.</u>, '''12''', 1823-1832, 2012.
      YEAR = GET_YEAR()
#Pickett-Heaps, C.A., D.J. Jacob, K.J. Wecht, E.A. Kort, S.C. Wofsy, G.S. Diskin, D.E.J. Worthy, J.O. Kaplan, I. Bey, and J. Drevet, ''Magnitude of seasonality of wetland methane emissions from the Hudson Bay Lowlands (Canada)'', <u>Atmos. Chem. Phys.</u>, '''11(8)''', 3773-3779, doi:10.5194/acp-11-3773-2011, 2011.
#if  defined( GEOS_5 )
#Wang, J.S., J.A. Logan, M.B. McElroy, B.N. Duncan, I.A. Megretskaia, and R.M. Yantosca, ''A 3-D model analysis of the slowdown and interannual variability in the methane growth rate from 1988 to 1997'', <u>Global Biogeochem. Cycles</u>, '''18''', GB3011, doi:10.1029/2003GB002180, 2004.
      IF ( YEAR .LT. 2004 ) YEAR  = 2004
      IF ( YEAR .GT. 2009 ) YEAR  = 2009
#elif defined( GEOS_4 )
      IF ( YEAR .LT. 2000 ) YEAR  = 2000
      IF ( YEAR .GT. 2006 ) YEAR  = 2006
#endif
      WRITE( CYEAR, '(i4)' ) YEAR
 
:Also change:
 
      XTAU = GET_TAU0( 1, 1, GET_YEAR() )
and
      XTAU = GET_TAU0( GET_MONTH(), 1, GET_YEAR() )
 
:to:
 
      XTAU = GET_TAU0( 1, 1, YEAR )
and
      XTAU = GET_TAU0( GET_MONTH(), 1, YEAR )
 
:For both annual and monthly mean GWETTOP. That seems to work and it reads the file for the proper simulation year.  


--[[User:Melissa Payer|Melissa Payer]] 18:06, 2 February 2012 (EST)
----
'''''[[Aerosol-only simulation|Previous]] | [[CO2 simulation|Next]] | [[Guide to GEOS-Chem simulations]]'''''

Latest revision as of 22:13, 25 June 2024

Previous | Next | Guide to GEOS-Chem simulations

  1. Simulations using KPP-built mechanisms (carbon, fullchem, Hg)
  2. Aerosol-only simulation
  3. CH4 simulation
  4. CO2 simulation
  5. Metals simulation
  6. POPs simulation
  7. Tagged CO simulation
  8. Tagged O3 simulation
  9. TransportTracers simulation


Overview

This page contains information about the methane (CH4) simulation in GEOS-Chem.

CH4 simulation user groups

See this post on the Carbon Cycle Working Group wiki page.

References

  1. Bloom, A. A., Bowman, K. W., Lee, M., Turner, A. J., Schroeder, R., Worden, J. R., Weidner, R., McDonald, K. C., and Jacob, D. J.: A global wetland methane emissions and uncertainty dataset for atmospheric chemical transport models (WetCHARTs version 1.0), Geosci. Model Dev., 10, 2141-2156, https://doi.org/10.5194/gmd-10-2141-2017, 2017.
  2. Sheng, J.-X., D. J. Jacob, J.D. Maasakkers, M.P. Sulprizio, D. Zavala-Areiza, and S. Hamburg, A high-resolution (0.1ox0.1o) inventory of methane emissions from Canadian and Mexican oil and gas systems, Atmos. Environ., 158, 211-215, 2017. [PDF]
  3. Maasakkers, J.D., D.J.Jacob, M.P. Sulprizio, A.J. Turner, M. Weitz, T. Wirth, C. Hight, M. DeFigueiredo, M. Desai, R. Schmeltz, L. Hockstad, A.A. Bloom, K.W. Bowman, S. Jeong, and M.L. Fischer, Gridded national inventory of U.S. methane emissions, Environ. Sci. Technol., 50, 13123−13133, 2016. [PDF]
  4. Turner, A. J., Jacob, D. J., Wecht, K. J., Maasakkers, J. D., Biraud, S. C., Boesch, H., Bowman, K. W., Deutscher, N. M., Dubey, M. K., Griffith, D. W. T., Hase, F., Kuze, A., Notholt, J., Ohyama, H., Parker, R., Payne, V. H., Sussmann, R., Velazco, V. A., Warneke, T., Wennberg, P. O., and Wunch, D.: Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data, Atmos. Chem. Phys. Discuss., 15, 4495-4536, doi:10.5194/acpd-15-4495-2015, 2015.
  5. Turner, A. J. and Jacob, D. J.: Balancing aggregation and smoothing errors in inverse models, Atmos. Chem. Phys. Discuss., 15, 1001-1026, doi:10.5194/acpd-15-1001-2015, 2015.
  6. Wecht, K.J., D.J. Jacob, C. Frankenberg, Z. Jiang, and D.R. Blake, Mapping of North America methane emissions with high spatial resolution by inversion of SCIAMACHY satellite data, submitted to J. Geophys. Res., 2014.
  7. Wecht, K.J., D.J. Jacob, M.P. Sulprizio, G.W. Santoni, S.C. Wofsy, R. Parker, H. Bösch, and J.R. Worden, Spatially resolving methane emissions in California: constraints from the CalNex aircraft campaign and from present (GOSAT, TES) and future (TROPOMI, geostationary) satellite observations, Atm. Chem. Phys. Discuss., 14, 4119-4198, doi:10.5194/acpd-14-4119-2014, 2014.
  8. 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, 2012.
  9. Pickett-Heaps, C.A., D.J. Jacob, K.J. Wecht, E.A. Kort, S.C. Wofsy, G.S. Diskin, D.E.J. Worthy, J.O. Kaplan, I. Bey, and J. Drevet, Magnitude of seasonality of wetland methane emissions from the Hudson Bay Lowlands (Canada), Atmos. Chem. Phys., 11(8), 3773-3779, doi:10.5194/acp-11-3773-2011, 2011.
  10. Wang, J.S., J.A. Logan, M.B. McElroy, B.N. Duncan, I.A. Megretskaia, and R.M. Yantosca, A 3-D model analysis of the slowdown and interannual variability in the methane growth rate from 1988 to 1997, Global Biogeochem. Cycles, 18, GB3011, doi:10.1029/2003GB002180, 2004.

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