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).

Primary Working Group Contacts

Sources and Sinks Working Group Co-Chairs Jintai Lin and Qiang Zhang
Sources and Sinks Working Group email list geos-chem-emissions [at] seas.harvard.edu
To subscribe to email list Send email to geos-chem-emissions-join [at] seas.harvard.edu
To unsubscribe from email list Send email to geos-chem-emissions-leave [at] seas.harvard.edu

Who's doing what and where? [Current GEOS-Chem Research Projects on Sources and Sinks]

User Group Description Contact Person Date Added
Dalhousie Top-down constraints on surface NOx emissions Matthew Cooper 27 April 2011
Harvard Methane sources in the Arctic Christopher Pickett-Heaps
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

Ongoing GEOS-Chem Developments Related to Sources and Sinks (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)
Update to MEGAN2.1 Dylan Millet (Minnesota)
MEGAN biogenic emissions Michael Barkley (Leicester)
  • Updates ongoing
Daily anthropogenic emissions broken down by sector from the EPA NEI2008 inventory Katie Travis (Harvard)
  • Added to the SEAC4RS research version of GEOS-Chem
  • We will incorporate this update via HEMCO
FINNv1 biomass burning emissions Jenny Fisher (Wollongong)
Min Huang (JPL)
Updated Southeast Asian emissions for SEAC4RS Jenny Fisher (Wollongong)
Patrick Kim (Harvard)
  • Updates ongoing
Australian anthropogenic emissions Jenny Fisher (Wollongong)
  • Updates ongoing

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

Recent GEOS-Chem Updates Related to Sources and Sinks

We have added the following updates pertaining to sources and sinks to recent GEOS-Chem versions:

Version Released Description Contact
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)

Discussions Related to Sources and Sinks (please add!)

  1. Scale factors for anthropogenic emissions
  2. GEIA Anthropogenic Scaling Factors

Isoprene Emission Estimates in the Literature

Recent Papers

Evaluation of the global oceanic isoprene source and its impacts on marine organic carbon aerosol. Arnold SR, Spracklen DV, Williams J, Yassaa N, Sciare J, Bonsang B, Gros V, Peeken I, Lewis AC, Alvain S, Moulin C. ATMOSPHERIC CHEMISTRY AND PHYSICS, Volume: 9, Issue: 4, Pages: 1253-1262, Published: 2009. We have combined the first satellite maps of the global distribution of phytoplankton functional type and new measurements of phytoplankton-specific isoprene productivities, with available remote marine isoprene observations and a global model, to evaluate our understanding of the marine isoprene source and its impacts on organic aerosol abundances. Using satellite products to scale up data on phytoplankton-specific isoprene productivity to the global oceans, we infer a mean "bottom-up" oceanic isoprene emission of 0.31 +/- 0.08 (1 sigma) Tg/yr. By minimising the mean bias between the model and isoprene observations in the marine atmosphere remote from the continents, we produce a "top-down" oceanic isoprene source estimate of 1.9 Tg/yr. We suggest our reliance on limited atmospheric isoprene data, difficulties in simulating in-situ isoprene production rates in laboratory phytoplankton cultures, and limited knowledge of isoprene production mechanisms across the broad range of phytoplankton communities in the oceans under different environmental conditions as contributors to this difference between the two estimates. Inclusion of secondary organic aerosol (SOA) production from oceanic isoprene in the model with a 2% yield produces small contributions (0.01-1.4%) to observed organic carbon (OC) aerosol mass at three remote marine sites in the Northern and Southern Hemispheres. Based on these findings we suggest an insignificant role for isoprene in modulating remote marine aerosol abundances, giving further support to a recently postulated primary OC source in the remote marine atmosphere.

For current discussions of isoprene oxidation in the literature, please see our Isoprene: Recent Papers page.

Available Historical and Future Emissions

Please visit our Historical and Future Emissions wiki page for the latest information about the historical and future emissions, including any bug fixes or updates.

--Melissa Payer 15:53, 9 January 2013 (EST)