Difference between revisions of "Emissions overview"

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Here is a quick overview of the emissions inventories that are currently available in GEOS-Chem.
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#REDIRECT [[HEMCO data directories]]
 
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== Anthropogenic emissions ==
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Please see our [[Anthropogenic emissions]] wiki page for a listing of available species by inventory.
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--[[User:Bmy|Bob Y.]] 16:04, 13 February 2015 (EST)
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== Biofuel emissions ==
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Please see our [[Biofuel emissions]] wiki page for a complete list of biofuel inventories available for use with GEOS-Chem.
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--[[User:Bmy|Bob Y.]] 17:17, 13 February 2015 (EST)
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== Biogenic emissions ==
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Biogenic species (Isoprene, Monoterpenes, Methyl Butenol) are emitted following the MEGAN model inventory. Please see our [[MEGAN biogenic emissions]] wiki page for more information.
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--[[User:Bmy|Bob Y.]] 17:18, 13 February 2015 (EST)
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== Biomass burning ==
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Please see our [[Biomass burning emissions]] wiki page for a list of available inventories for use with GEOS-Chem.
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--[[User:Bmy|Bob Y.]] 17:18, 13 February 2015 (EST)
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== Other NOx emissions sources ==
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Please see the following wiki pages for information about other sources of NOx emissions:
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# [[Aircraft emissions#NOx|NOx emissions from aircraft]]
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# [[Lightning NOx emissions|NOx emissions from lightning]]
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# [[Soil NOx emissions|NOx emissions from soils]]
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--[[User:Bmy|Bob Y.]] 14:40, 17 March 2010 (EDT)
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== Aerosol emissions ==
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Please see our [[Aerosol emissions]] wiki page for a full description of the inventories which contain aerosol species (e.g. SO2, SO4, NH3, NH4, etc.)
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--[[User:Bmy|Bob Y.]] 14:40, 17 March 2010 (EDT)
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== Inventory History ==
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=== In GEOS-Chem v10-01 and higher versions ===
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[[GEOS-Chem v10-01]] and higher versions use [[HEMCO|HEMCO emissions component]] to compute emissions of chemical species.  For a complete list of all available emissions inventories (as well as other relevant data sets), please see our [[HEMCO data directories|''HEMCO data directories'' wiki page]].
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--[[User:Bmy|Bob Y.]] 17:23, 13 February 2015 (EST)
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=== Prior to GEOS-Chem v10-01 ===
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The following table describes important changes to the emission inventories:
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{| border=1 cellspacing=0 cellpadding=5
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|-bgcolor="#CCCCCC" valign="top"
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!Version
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!Released
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!Description
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!Contact
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|-valign="top"
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|[[GEOS-Chem v9-02|v9-02]]
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|TBD
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|[[Aircraft emissions#MIT aviation emissions inventory|AEIC aircraft emissions]]
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|Sebastian Eastham (MIT)<br>Steven Barrett (MIT)
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|-valign="top"
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|[[GEOS-Chem v9-02|v9-02]]
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|TBD
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|[[CH4 simulation#Update CH4 emissions to EDGAR v4.2|EDGAR v4.2 CH4 emissions]]
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|Kevin Wecht (Harvard)
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|-valign="top"
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|[[GEOS-Chem v9-02|v9-02]]
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|TBD
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|[[Historical and Future Emissions#RCP future emission scenarios|RCP future emission scenarios]]
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|Chris Holmes (UC Irvine)
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|-valign="top"
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|[[GEOS-Chem v9-02|v9-02]]
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|TBD
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|[[Soil NOx emissions#Updated soil NOx emissions algorithm|New soil NOx emission module]]
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|Rynda Hudman Kay (EPA)<br>Neil Moore (formerly of Dalhousie)<br>Bram Maasakkers (Eindhoven)
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|-valign="top"
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|[[GEOS-Chem v9-01-03|v9-01-03]]
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|Sep 2012
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|[[Acetone|Improved acetone simulation]]
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|Emily Fischer (Harvard)
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|-valign="top"
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|[[GEOS-Chem v9-01-03|v9-01-03]]
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|Sep 2012
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|Complete shift of biogenic VOC emissions from GEIA to MEGAN; retire GEIA
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|Dylan Millet
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|-valign="top"
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|[[GEOS-Chem v9-01-03|v9-01-03]]
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|Sep 2012
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|OVOC's dry deposition
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|Jingqiu Mao (NOAA/GFDL)
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|-valign="top"
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|[[GEOS-Chem v9-01-03|v9-01-03]]
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|Sep 2012
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|[[#Available Historical and Future Emissions|Historical emission inventories of SO2, NOx, BC, and POA]]
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|Eric Leibensperger (MIT)
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|-valign="top"
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|[[GEOS-Chem v9-01-03|v9-01-03]]
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|Sep 2012
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|[[Ship emissions#PARANOX_ship_plume_model|PARANOX model for evolution of ship exhaust plumes]]
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|Geert Vinken (Eindhoven)
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|-valign="top"
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|[[GEOS-Chem v9-01-02|v9-01-02]]
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|Nov 2011
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|[[Biomass_burning_emissions#GFED3 | Update biomass burning emissions to GFED3]]
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|Prasad Kasibhatla
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|-valign="top"
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|[[GEOS-Chem v9-01-02|v9-01-02]]
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|Nov 2011
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|[[Implementation_of_RETRO_Anthropogenic_Emissions | Implementation of RETRO Anthropogenic VOC emissions]]
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|W. Reinhart, U. of Minnesota
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|-valign="top"
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|[[GEOS-Chem v9-01-01|v9-01-01]]
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|Feb 2011
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|[http://seas.harvard.edu/~ltmurray/LNOx.v9-01-01.Release.Notes.pdf Updated lightning parameterization and fix for cloud-top-height algorithm]
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|L. Murray, Harvard
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|-valign="top"
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|[[GEOS-Chem v9-01-01|v9-01-01]]
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|Feb 2011
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|[[Volcanic SO2 emissions from Aerocom#Data for v9-01-01 and newer versions|Updated volcanic SO2 emissions from Aerocom]]
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| J. Fisher (Harvard)
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|-valign="top"
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|[[GEOS-Chem v8-03-01|v8-03-01]]
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|May 2010
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|[[Scale factors for anthropogenic emissions| Extension of annual anthropogenic scale factors to 2006]]
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|A. van Donkelaar, Dalhousie
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|-valign="top"
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|[[GEOS-Chem v8-03-01|v8-03-01]]
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|May 2010
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|Emissions for Nested NA/EU Simulations [[GEOS-Chem nested grid simulations|Nested Grid]]
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|A. van Donkelaar, Dalhousie
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|-valign="top"
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|[[GEOS-Chem v8-03-01|v8-03-01]]
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|May 2010
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|Emissions for Global 1 x 1.25 simulation capability
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|L. Lamsal, Dalhousie
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|-valign="top"
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|[[GEOS-Chem v8-03-01|v8-03-01]]
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|May 2010
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|[[Secondary organic aerosols#Speciated biogenic emissions from MEGAN|Speciated biogenic emissions from MEGAN v2.1 now used in SOA code]]
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|H. Pye, Caltech
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|-valign="top"
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|[[GEOS-Chem v8-02-04|v8-02-04]]
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|Feb 2010
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|[[EPA/NEI05 North American emissions|EPA/NEI2005 regional emissions inventory for North America]]
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|P. Le Sager (formerly Harvard),<br>A. van Donkelaar (Dalhousie)
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|-valign="top"align="center"
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|[[GEOS-Chem v8-02-04|v8-02-04]]
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|Feb 2010
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|[[MEGAN biogenic emissions#MEGAN in GEOS-Chem v8-02-04 and later versions|MEGAN v2.1 biogenic emissions]]
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|Mike Barkley, Edinburgh
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|-valign="top"
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|[[GEOS-Chem v8-02-03|v8-02-03]]
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|Oct 2009
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|[[Ship emissions#ICOADS|ICOADS ship emissions]]
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|Chulkyu Lee, Dalhousie
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|-valign="top"
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|[[GEOS-Chem v8-02-03|v8-02-03]]
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|Oct 2009
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|[[Lightning NOx emissions#Updated OTD.2FLIS local redistribution for GEOS-5|Updated OTD/LIS redistribution factors for GEOS-5]]
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|Lee Murray, Harvard
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|}
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Please see the following documentation for information on previous model versions:
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* [http://acmg.seas.harvard.edu/geos/word_pdf_docs/emissions_v8_02_03.pdf Description of anthropogenic emissions inventories in GEOS-Chem v8-02-03]
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* [http://wiki.seas.harvard.edu/geos-chem/images/Anth_emiss_gc_v8-01-04.pdf Description of anthropogenic emissions inventories in GEOS-Chem v8-01-04]
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* [http://acmg.seas.harvard.edu/geos/word_pdf_docs/INVENTORY_GC_public-pre_v8.pdf Table of available anthropogenic emissions inventories for use w/ GEOS-Chem (pre-v8)]
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Documents like these will no longer be produced. Information on the current model version can be found throughout the wiki.
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--[[User:Bmy|Bob Y.]] 17:23, 13 February 2015 (EST)
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== Emissions regridding issues ==
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<span style="color:red">'''''NOTE: In [[GEOS-Chem v10-01]] and higher versions, regridding of emissions is now handled by the [[HEMCO|HEMCO emissions component]].'''''</span>
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Different regridding approaches have been tried in order to prepare for model simulations at the GEOS-5 native resolution of 0.5x0.667, or other high resolution possibilities.
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With each step in regridding, information is reorganized in such a way that it cannot be recovered by later regridding in the reverse direction, therefore, optimal regridding is done in a single step. This means that when input emissions data are provided on a given grid, the optimal approach (to avoid losing information) is to leave them on that grid, read them into the model and regrid in the code to the desired resolution. This is the approach currently used for GFEDv2 which comes in on a generic 1x1 grid (360x180).
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In [[GEOS-Chem v9-01-02]] and earlier versions, the model does a 2-step regridding using functions from regrid_1x1_mod.f in the following way:
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1) function DO_REGRID_G2G_1x1 regrids generic_1x1 --> GEOS_1x1
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2) function DO_REGRID_1x1 regrids GEOS_1x1 --> desired resolution
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The above is not equivalent to the single step regridding carried out in IDL (regridH.pro).
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An alternative is to use the Fortran regridding code map_a2a (developed by S.-J. Lin and refined by Bob Yantosca). I have experimented with this in the model and have it working for some situations but the code has a single option for half-polar grids. This permits direct regridding from an input half-polar grid to an output half-polar grid, or an input full-polar grid to an output full-polar grid, but does not properly regrid between full-polar and half-polar.
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Figures depicting CO<span><sub>2</sub> differences in the net terrestrial exchange field which was on a generic 1x1 grid then regridded to 2x2.5 for a model simulation using different approaches (IDL regridh.pro, regrid_1x1_mod, and map_a2a) are shown below, to emphasize that a single-step regridding approach is the best universal approach.
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[[Image:Example.jpg]]
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-- Ray Nassar 16:22, 10 May 2011 (EDT)
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== MAP_A2A regridding algorithm ==
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Prasad Kasibhatla and Matt Cooper have implemented the <tt>MAP_A2A</tt> algorithm into GEOS-Chem.  This update was tested in the 1-month benchmark simulation [[GEOS-Chem v9-01-03 benchmark history#v9-01-03k|v9-01-03k]] and approved on 27 Apr 2012.
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Please visit our [[Regridding in GEOS-Chem]] wiki page for the latest information about the <tt>MAP_A2A</tt> regridding algorithm, including bug fixes and updates.
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--[[User:Bmy|Bob Y.]] 15:57, 28 August 2012 (EDT)
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Latest revision as of 18:26, 25 May 2018