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Revision as of 22:43, 7 January 2021

GEOS–Chem Wiki

GEOS-Chem Community Mission: to advance understanding of human and natural influences on the environment
through a comprehensive, state-of-the-science, readily accessible global model of atmospheric composition.

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.

GEOS-Chem overview
Past releases Current release: GEOS-Chem 12.9.3 Future releases


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.

Item Description Documentation is located at:
GEOS-Chem Classic GEOS-Chem single-node implementation
(using 1-64 computational cores)
Getting Started with GEOS-Chem (wiki page)
GCHP GEOS-Chem multi-node "high performance" implementation
(using 100's - 1000's of computational cores)
GEOS-Chem on the cloud Instructions for running GEOS-Chem on the Amazon Web Services EC2 cloud-computing platform cloud.geos-chem.org
WRF-GC GEOS-Chem coupled to the WRF GCM wrf.geos-chem.org
HEMCO The Harmonized Emissions Component hemco.readthedocs.io
GCPy The GEOS-Chem Python Toolkit gcpy.readthedocs.io
GEOS-Chem Adjoint The GEOS-Chem adjoint model
(NOTE: maintained separately from GEOS-Chem)
GEOS-Chem Adjoint (wiki page)
GEOS-Chem Videos Tutorial videos for GEOS-Chem, GCHP, HEMCO, GCPy, and related topics youtube.com/c/geos-chem
GEOS-Chem Guides Short manuals giving a deeper dive into various GEOS-Chem topics (such as compilers, netCDF, diagnostics, etc.) GEOS-Chem Guides (wiki page)

General information about GEOS-Chem

The table below lists where you can find general information about GEOS-Chem

Item Description Documentation is located at:
Welcome Letter A welcome letter for new users of GEOS-Chem GEOS-Chem welcome letter for new users (wiki page)
GEOS-Chem Overview A welcome letter for new users of GEOS-Chem GEOS-Chem overview (wiki page)
GEOS-Chem Versions A list of GEOS-Chem versions GEOS-Chem versions (wiki page)
GEOS-Chem Species List Information about species used in the GEOS-Chem chemistry mechanisms Guide to species in GEOS-Chem (wiki page)
Requesting Suppport A guide to creating GEOS-Chem support requests using the Github issue trackers Submitting GEOS-Chem support requests (wiki page)
Submitting code or data Guidelines for submitting new science updates or new data sources for inclusion into GEOS-Chem Submitting updates for inclusion in GEOS-Chem (wiki page)