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


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


Current Projects (please add yours!)

User Group Description Contact Person Date Added
GEOS-Chem Support Team Ongoing development of the Harmonized Emissions Component (HEMCO) GCST June 2022
Georgia Tech (USA) Global anthropogenic emissions of HCl and particulate chloride (1960-2014) Pengfei Liu January 2021
University of York Updated oceanic emissions of HOI and I2 Ryan Pound August 2023

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.

Species Authors Reference
Monthly NOx emissions for East Asia (2005-2012) Zhen Qu (CU Boulder)

Qu et al., 2017

High-resolution (5 km or finer) NOx emissions for China and surrounding areas (2004-present)

Jintai Lin (Peking University)

Kong et al., ACP, 2019 Kong et al., EST, 2022

Available Emission Inventories

Archive of default and optional inventories for each model version: http://wiki.seas.harvard.edu/geos-chem/index.php/HEMCO_data_directories

Narrative description of the latest version of the model with relevant emission inventory references: https://geos-chem.seas.harvard.edu/geos-chem-narrative#emis


  1. Scale factors for anthropogenic emissions