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GEOS-Chem Wiki

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.

This wiki is meant to facilitate communication between GEOS-Chem users and developers. If this is your first time here, check out the features page. If you would like to contribute to the wiki, please register as a user by clicking create account at the top right corner of this page.

New information is continually being added to the wiki, so please check back here often, or even better, subscribe to the recent changes' RSS feed: you will not miss a discussion!

General Information about GEOS-Chem

The links below provide more information about general GEOS-Chem topics.

Introduction and Overview

Getting Started with GEOS-Chem

General Technical Information

GEOS-Chem Working Groups

The current GEOS-Chem Working Groups are listed below. All users should feel free to join the Working Group that is most relevant to their research (contact the working group co-chairs for more information). The GEOS-Chem Working Groups are responsible for identifying and coordinating model development priorities in their particular area of responsibility.

The GEOS-Chem Steering Committee is composed of the Working Group Co-Chairs and Model Scientist Daniel Jacob. The Steering Committee will meet periodically to set overall priorities for continued GEOS-Chem model development.

Working Group Co-Chairs Email list
Adjoint Kevin Bowman (
Daven Henze (
Aerosol processes Colette Heald (
Fangqun Yu (
Carbon gases Dylan Jones (
Prasad Kasibhatla (
Emissions Jennifer Logan (
Randall Martin (
Chemistry-climate interactions Becky Alexander (
Loretta Mickley (
Oxidants and chemistry Mat Evans (
May Fu (
Regional modeling Rokjin Park (
Yuxuan Wang (

Code Developers' Forums

These pages contain more specific information about coding issues, emissions, chemistry, met fields, version history, and other aspects of GEOS-Chem. GEOS-Chem users and developers should feel free to contribute to these pages and to initiate discussion on the various topics listed here.






Met Fields

Earth System Model Framework

Related Projects

Data Visualization and Analysis



Wiki Documentation