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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
- Features of the GEOS-Chem public wiki
- GEOS-Chem welcome letter for new users
- GEOS-Chem Overview
- GEOS-Chem People & Projects
- User Resources, Code Development Guidelines, and Debugging Tips
- GEOS-Chem programming staff
- GEOS-Chem newsletters
Steering Committee and Working Groups
Getting Started with GEOS-Chem
- Minimum system requirements for GEOS-Chem
- GEOS-Chem supported platforms and compilers
- Downloading GEOS-Chem source code and data
- GEOS-Chem code development cycle
- GEOS-Chem programming resources (e.g. tutorials, user guides, etc.)
- GEOS-Chem Programming Style Guide
- Running GEOS-Chem with TESTRUN
General Technical Information
- Initial conditions for GEOS-Chem
- Tips on how to debug GEOS-Chem effectively
- Reporting GEOS-Chem bugs
- Parallelizing GEOS-Chem with the OpenMP directives
- Common GEOS-Chem error messages
- GEOS-Chem Search Engines
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.
Coding
- GEOS-Chem versions under development
- Machine issues & portability
- Floating point math issues
- Bugs and fixes
- Outstanding issues yet to be resolved
Diagnostics
Emissions
- Overview
- Aircraft emissions
- Anthropogenic emissions
- Biofuel emissions
- Biogenic emissions
- Biomass burning emissions
- Lightning NOx emissions
Chemistry
- Chemistry Issues
- NOx-Ox-hydrocarbon-aerosol (aka "full-chemistry") simulation
- Photolysis mechanism
- Mercury simulation
- Tagged CO simulation
- KPP solvers FAQ
- Isoprene
Aerosols
- Aerosols overview: projects and developments
- Aerosol-only simulation
- Aerosol thermodynamical equilibrium
- Secondary organic aerosols
- Sea salt aerosols
- Sulfate aerosols
Met Fields
- GCAP
- GMAO GEOS-5
- GEOS-Chem Met Fields (from website)
Nested Grid Simulations
Earth System Model Framework
- Installing ESMF and other required libraries
- Code development with the Earth System Model Framework
- Generating automatic LaTeX documentation with protex
Related Projects
Data Visualization and Analysis
IDL
- ITT Visualization (vendor)
- Structures in IDL
- Pointers in IDL
- Overview of Mathematics in IDL
- Coyote's Guide to IDL Programming (David Fanning's Web Site) - Lots of tips on how to accomplish programming tasks
- IDL Page at Max Planck Institute for Meteorology
- Martin Schultz's IDL Tutorial (PDF Format)
- IDL Astronomy User's Library
- JHU/APL/S1R IDL routines page
- Craig Markwardt's IDL library
- The Underground Guide to IDL by Liam Gumley (PDF)
- Reading binary files in IDL