Emissions Working Group

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The purpose of this Working Group is to provide a forum to discuss current and new developments in GEOS-Chem associated with land-atmosphere and ocean-atmosphere sources, sinks, and fluxes of trace gases and aerosols.

All users interested in adding/updating the GEOS-Chem emissions inventories are encouraged to subscribe to the emissions email list (click on the link in the contact information section below).

Contact Information

Emissions and Deposition
Working Group Co-Chairs
Emissions and Deposition
Working Group email list
geos-chem-emissions [at] g.harvard.edu
To subscribe to email list Either
  • Send an email to geos-chem-emissions+subscribe [at] g.harvard.edu


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  • Send an email to geos-chem-emissions+unsubscribe [at] g.harvard.edu


--Bob Y. (talk) 18:35, 21 August 2015 (UTC)

Current Projects (please add yours!)

User Group Description Contact Person Date Added
Birmingham, UK/NCAR Inefficient combustion emissions in Africa Eloise Marais 12 April 2017
Harvard Methane sources in the Arctic Christopher Pickett-Heaps
University of Minnesota VOC emissions in India Sree Chaliyakunnel 31 August 2017
Harvard Mechanistic Lightning Parameterization Lee Murray
JPL Comparison of adjoint and mass balance for NOx emissions Changsub Shim
U. East Anglia COS Emissions Parvadha Suntharalingam
U. Edinburgh Biogenic VOC emissions from tropical ecosystems Michael Barkley
U. Edinburgh Regional methane sources using surface in situ and GOSAT and IASI satellite observations and an ensemble Kalman filter Annemarie Fraser
U. Edinburgh Quantifying the impact of boreal biomass burning emissions on tropospheric oxidant chemistry Mark Parrington
U. Eindhoven Constraining ship emissions using OMI NO2 observations / Soil NOx emissions Geert Vinken 21 June 2012
U. Toronto / Env Canada CO2 sources and sinks (fossil fuels including shipping/aviation, biosphere, ocean, etc.) Ray Nassar
U. Toronto Adjoint analysis of CO sources from MOPITT Zhe Jiang
Peking University Top-down constraints on Asia VOCs May Fu
Peking University Air-sea exchange and top-down constraints on global acetone May Fu 29 April 2011
CSU IASI constraints on NHx Colette Heald
Tsinghua University Bottom-up/top-down anthropogenic inventory over East Asia Qiang Zhang
CU Boulder Top-down constraints on NH3 Juliet Zhu
US EPA Top-down constraints on NO2 Havala Pye
U. Nebraska Lincoln Top-down constraints on aerosols over Asia using MODIS Richard Zu
Peking University Natural sources (soil, lightning, bb) of NOx over China: top-down vs bottom-up Jintai Lin 01 Nov 2010
UW Snow NOx source in Greenland and Antarctica Becky Alexander 07 May 2015
MIT Investigating ozone dry deposition to vegetation Sam Silva 08 May 2017

Top-down Findings Germane to GEOS-Chem Inventories (please add yours!)

Science findings from top-down studies that have implications for inventories used in GEOS-Chem (e.g., an inferred high or low bias or other such issue) can be compiled in this table. Please add any findings, either from your group or from other groups, that you feel the GEOS-Chem community should be aware of in using these inventories.

--Dbm (talk) 00:57, 1 September 2017 (UTC)

Ongoing Developments (please add yours!)

Here is the list of updates that are slated to be added to GEOS-Chem in the next few releases:

Update Authors Planned release
HEMCO emissions component Christoph Keller (Harvard)
MEGAN biogenic emissions Michael Barkley (Leicester)
  • Updates ongoing
Australian anthropogenic emissions Jenny Fisher (Wollongong)
  • Updates ongoing

--Bob Y. 18:55, 14 January 2015 (EST)

Recent Updates

We have added the following updates pertaining to emissions and deposition to recent GEOS-Chem versions:

Version Released Description Contact
v11-01 Jan 2017 Update HEMCO to version 2.0.003 Christoph Keller (NASA GSFC)
v11-01 Jan 2017 0.1° x 0.1° CAC emissions Aaron van Donkelaar (Dalhousie)
v11-01 Jan 2017 Replace RETRO C3H8 emissions with emissions from Xiao et al. (2008) Emily Fischer (CSU)
Zitely Tzompa (CSU)
v11-01 Jan 2017 Add option for QFED & FINN emissions in the Hg simulations Jenny Fisher (Wollongong)
v11-01 Jan 2017 CO2 direct effect on isoprene emissions Amos Tai (CUHK)
v11-01 Jan 2017 Update biomass burning emissions to GFED4.1, includes:
  • Daily and diurnal factors
Prasad Kasibhatla (Duke)
Christoph Keller (Harvard)
v10-01 Jun 2015 The HEMCO emissions component now handles all GEOS-Chem emissions. Christoph Keller (Harvard)
v10-01 Jun 2015 Daily anthropogenic emissions broken down by sector from the EPA NEI2008 inventory (via HEMCO) Katie Travis (Harvard)
v10-01 Jun 2015 FINNv1 biomass burning emissions (via HEMCO) Jenny Fisher (Wollongong)
Min Huang (JPL)
v10-01 Jun 2015 MEGAN v2.1 plus Guenther 2012 biogenic emissions (via HEMCO) Dylan Millet (Minnesota)
v9-02 Mar 2014 New soil NOx emission module Rynda Hudman Kay (EPA)
Neil Moore (formerly of Dalhousie)
Bram Maasakkers (Harvard)
v9-02 Mar 2014 EPA/NEI05 North American Hg emissions Yanxu Zhang (U. Washington)
Lyatt Jaeglé (U. Washington)
v9-02 Mar 2014 Hg anthropogenic emissions options for the year 2006 or 2050 following SRES scenarios A1B, A2, B1, and B2 from Streets et al. 2009. Bess Corbitt (Harvard)
v9-02 Mar 2014 Updated NH3 seasonal scaling factors over the US Lin Zhang (PKU)
v9-02 Mar 2014 Updated Canadian NH3 inventory Wai-Ho Lo (Dalhousie)
v9-02 Mar 2014 Bug in wet deposition Henry's constant Fabien Paulot (Harvard)
v9-02 Mar 2014 Fix diurnal NOx scale factors and fix double counting of biofuels over Mexico, Canada, and Europe Christoph Keller (Harvard)
v9-02 Mar 2014 Correct bugs in ship emissions w/ non-local PBL mixing Chris Holmes (UC Irvine)
v9-02 Mar 2014 Bug fixes in day-of-week computation GEOS-Chem Support Team
v9-02 Mar 2014 RCP future emission scenarios Chris Holmes (UC Irvine)
v9-02 Mar 2014 EDGAR v4.2 emissions for CH4 simulation Kevin Wecht (Harvard)
v9-02 Mar 2014 Update anthropogenic scale factors through 2010 Aaron van Donkelaar (Dalhoisie)
v9-02 Mar 2014 Update GFED3 emissions to 2011 Prasad Kasibhatla (Duke)
v9-02 Mar 2014 AEIC aircraft emissions inventory Sebastian Eastham (MIT)
Steven Barrett (MIT)
v9-02 Mar 2014 Fix molecular weights of RIP and IEPOX used in drydep_mod.F GEOS-Chem Support Team
v9-02 Mar 2014 Bug fix for NEI2005 SO4 emissions in sulfate_mod.F Jenny Fisher (U. Wollongong)
v9-01-03 Sep 2012 Improved acetone simulation Emily Fischer (Harvard)
v9-01-03 Sep 2012 Complete shift of biogenic VOC emissions from GEIA to MEGAN; retire GEIA Dylan Millet
v9-01-03 Sep 2012 OVOC's dry deposition Jingqiu Mao (NOAA/GFDL)
v9-01-03 Sep 2012 Historical emission inventories of SO2, NOx, BC, and POA Eric Leibensperger (MIT)
v9-01-03 Sep 2012 PARANOX model for evolution of ship exhaust plumes Geert Vinken (Eindhoven)
v9-01-03 Sep 2012 Improved snow scavenging and washout parameterization Qiaoqiao Wang (Harvard)
v9-01-03 Sep 2012 Constraining the lightning NOx source with satellite data Lee Murray (Harvard)
v9-01-03 Sep 2012 MAP_A2A algorithm to regrid emissions on the fly Prasad Kasibhatla (Duke)
Matt Cooper (Dalhousie)
v9-01-03 Sep 2012 Anthropogenic NOx scaling factors from OMI Lok Lamsal (NASA)
Matt Cooper (Dalhousie)
v9-01-02 Nov 2011 GEIA 2005 Hg emissions Bess Corbitt (Harvard)
Noelle Selin (MIT)
v9-01-02 Nov 2011 Bug fix for biofuel emissions when using EPA/NEI05 GEOS-Chem Support Team
v9-01-02 Nov 2011 Update to GFED3 biomass burning Prasad Kasibhatla (Duke)
v9-01-02 Nov 2011 Anthropogenic VOCs Dylan Millet (UMN)
v9-01-02 Nov 2011 Added seasonality to Streets NH3 emissions over Asia Jenny Fisher (Harvard)
v9-01-01 May 2011 Updated Hg simulation Bess Corbitt (Harvard)
Jenny Fisher (Harvard)
Helen Amos (Harvard)
v9-01-01 May 2011 Bug fix for biofuel emissions when using EPA/NEI05 GEOS-Chem Support Team
v9-01-01 May 2011 Bug fixes for ship emissions and EMEP ship emissions mask file GEOS-Chem Support Team
v9-01-01 May 2011 Updated lightning parameterization and fix for cloud-top-height algorithm L. Murray, Harvard
v9-01-01 May 2011 Updated volcanic SO2 emissions from Aerocom J. Fisher (Harvard)
v9-01-01 May 2011 Updated wet scavenging and convective updraft scavenging algorithms and
Allow both washout and rainout when precipitation forms
H. Amos (Harvard)
Bess Corbitt (Harvard)
Q. Wang (Harvard)
v8-03-02 Sep 2010 Updated CO2 Emissions R. Nassar, Environment Canada
v8-03-01 May 2010 Extension of annual anthropogenic scale factors to 2006 A. van Donkelaar, Dalhousie
v8-03-01 May 2010 EMEP emissions extended to 2007 and seasonality extended to SOx, CO, and NH3 A. van Donkelaar, Dalhousie
v8-03-01 May 2010 Emissions for Nested NA/EU Simulations Nested Grid A. van Donkelaar, Dalhousie
v8-03-01 May 2010 Emissions for Global 1 x 1.25 simulation capability L. Lamsal, Dalhousie
v8-03-01 May 2010 Speciated biogenic emissions from MEGAN v2.1 now used in SOA code H. Pye, Caltech
v8-02-04 Feb 2010 EPA/NEI2005 regional emissions inventory for North America P. Le Sager (formerly Harvard),
A. van Donkelaar (Dalhousie)
v8-02-04 Feb 2010 MEGAN v2.1 biogenic emissions Mike Barkley, Edinburgh
v8-02-04 Feb 2010 Updated inventory of volcanic SO2 emissions from AeroCom Jenny Fisher, Harvard
v8-02-03 Oct 2009 ICOADS ship emissions Chulkyu Lee, Dalhousie
v8-02-03 Oct 2009 Updated OTD/LIS redistribution factors for GEOS-5 Lee Murray, Harvard
v8-02-02 Jun 2009 BOND inventory for BC and OC with monthly variations Eric Leibensperger, Harvard

--Melissa Sulprizio 10:43, 17 January 2014 (EST)


  1. Scale factors for anthropogenic emissions
  2. GEIA Anthropogenic Scaling Factors
  3. Biogenic Parameter Input Sources
  4. Historical and Future Emissions wiki page