GEOS-Chem Community Mission: to advance understanding of human and natural influences on the environment
The GEOS–Chem model is a global 3-D model of atmospheric composition driven by assimilated meteorological observations from the Goddard Earth Observing System (GEOS) of the NASA Global Modeling and Assimilation Office. It is applied by research groups around the world to a wide range of atmospheric composition problems. Central management and support of the model is provided by the Atmospheric Chemistry Modeling Group at Harvard University and by the Atmospheric Composition Analysis Group at Washington University.
|Current release: GEOS-Chem 14.3.0
- 09 Feb 2024: GEOS-Chem 14.3.0 is now available!
- 02 Feb 2024: Read the GEOS-Chem Newsletter 2024, Issue #1
- A GEOS-Chem Google Scholar page is now available!
- Click 'Follow' to be notified of new publications.
- Contact Bex Horner with issues or questions.
- The GEOS-Chem Youtube Channel has 350+ subscribers and a new URL: https://www.youtube.com/~geoschem
- NASA/GMAO is now producing GEOS chemical forecasts (GEOS-CF) using GEOS-Chem coupled to the NASA/GEOS ESM
For access to all past GEOS-Chem newsletters, visit this page.
GEOS-Chem manuals and tutorials
Read user manuals for GEOS-Chem 14 and related software.
Also see our list of software tools maintained by GEOS-Chem users.
The user manual for GEOS-Chem 13.4.1 and prior versions may be found HERE.
General information about GEOS-Chem
The table below lists where you can find general information about GEOS-Chem.
|Website that links to GEOS-Chem information and resources
|A welcome letter for new users of GEOS-Chem
|GEOS-Chem overview (wiki page)
|A page with linking to many GEOS-Chem topics.
|A narrative descrption of GEOS-Chem that you can include in scientific papers (plus instructions for citing GEOS-Chem)
|GEOS-Chem New Developments
|A list of significant GEOS-Chem updates and the developers who worked on them
|GEOS-Chem Steering Committee (GCSC)
|A listing of current GCSC members and minutes from GCSC meetings
|GEOS-Chem Working Groups
|A listing of GEOS-Chem Working Groups and Working Group Co-Chairs
|GEOS-Chem versions (wiki page)
|A listing of GEOS-Chem versions (with links for more information)
|GEOS-Chem Species List
|View GEOS-Chem Species properties (ReadTheDocs page)
|A listing of the species used in the GEOS-Chem chemistry mechanisms
|GEOS-Chem Guides (wiki page)
|List of several user guides explaining topics in-depth
|GEOS-Chem support guidelines
|ReadTheDocs page with instructions for creating GEOS-Chem support requests using the Github issue trackers
|Submitting code or data
|GEOS-Chem contributing guidelines
|ReadTheDocs page with instructions for submitting new source code or data updates to be included into GEOS-Chem.