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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.
|Past releases||Current release: GEOS-Chem 13.4.1||Future releases|
- 19 May 2022: GEOS-Chem 13.4.1 is now available!
- 24 Feb 2022: Read the GEOS-Chem Newsletter 2022, Issue #1
- 11 Dec 2020: A GEOS-Chem Google Scholar page is now available!
- Click 'Follow' to be notified of new publications.
- Contact Gongda Lu with issues or questions.
- 02 Apr 2020: The GEOS-Chem Youtube Channel has 100+ subscribers and a new URL: https://youtube.com/c/geoschem
- 03 Feb 2020: View our GEOS-Chem "dry-run" tutorial at our GEOS-Chem Youtube channel
- 17 Sep 2019: 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
The table below lists the various manual pages for GEOS-Chem and its related software packages.
|GEOS-Chem Classic||Getting Started with GEOS-Chem (wiki page)
||GEOS-Chem single-node implementation|
(using 1-64 computational cores)
|GCHP||gchp.readthedocs.io||GEOS-Chem multi-node "high performance" implementation|
(using 100's - 1000's of computational cores)
|GEOS-Chem on the cloud||cloud.geos-chem.org||Instructions for running GEOS-Chem on the Amazon Web Services EC2 cloud-computing platform|
|WRF-GC||wrf.geos-chem.org||GEOS-Chem coupled to the WRF weather model|
|HEMCO||hemco.readthedocs.io||The Harmonized Emissions Component|
|GCPy||gcpy.readthedocs.io||The GEOS-Chem Python Toolkit|
|KPP||kpp.readthedocs.io||The Kinetic PreProcessor (KPP)|
|GEOS-Chem Adjoint||GEOS-Chem Adjoint (wiki page)||The GEOS-Chem adjoint model|
(NOTE: maintained separately from GEOS-Chem)
|GEOS-Chem Videos||youtube.com/c/geos-chem||Tutorial videos for GEOS-Chem, GCHP, HEMCO, GCPy, etc., and recordings of GEOS-Chem meeting sessions|
|GEOS-Chem Guides||GEOS-Chem Guides (wiki page)||Short manuals giving a deeper dive into various GEOS-Chem topics (such as compilers, netCDF, diagnostics, etc.)|
General information about GEOS-Chem
The table below lists where you can find general information about GEOS-Chem.
|GEOS-Chem website||geos-chem.org||Website that links to GEOS-Chem information and resources|
|Welcome Letter||GEOS-Chem welcome letter for new users (wiki page)||A welcome letter for new users of GEOS-Chem|
|GEOS-Chem Overview||GEOS-Chem overview (wiki page)||A page with linking to many GEOS-Chem topics.|
|GEOS-Chem Narrative||geos-chem.seas.harvard.edu/geos-chem-narrative||A narrative descrption of GEOS-Chem that you can include in scientific papers (plus instructions for citing GEOS-Chem)|
|GEOS-Chem New Developments||geos-chem.seas.harvard.edu/geos-new-developments||A list of significant GEOS-Chem updates and the developers who worked on them|
|GEOS-Chem Steering Committee (GCSC)||geos-chem.seas.harvard.edu/geos-steering-cmte||A listing of current GCSC members and minutes from GCSC meetings|
|GEOS-Chem Working Groups||geos-chem.seas.harvard.edu/geos-working-groups||A listing of GEOS-Chem Working Groups and Working Group Co-Chairs|
|GEOS-Chem Versions||GEOS-Chem versions (wiki page)||A listing of GEOS-Chem versions (with links for more information)|
|GEOS-Chem Species List||Guide to species in GEOS-Chem (wiki page)||A listing of the species used in the GEOS-Chem chemistry mechanisms|
|Requesting Support||Submitting GEOS-Chem support requests (wiki page)||Instructions for creating GEOS-Chem support requests using the Github issue trackers|
|Submitting code or data||Submitting updates for inclusion in GEOS-Chem (wiki page)||Instructions for submitting new source code or data updates to be included into GEOS-Chem.|