Difference between revisions of "Main Page (June 2017)"

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.

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

• Overview of GEOS-Chem and its user community
  • GEOS-Chem welcome letter for new users
  • GEOS-Chem People & Projects
  • GEOS-Chem Support Team
  • GEOS-Chem newsletters
  • GEOS-Chem versions
  • Narrative description of GEOS-Chem
  • GEOS-Chem public license and list of developers
  • List of GEOS-Chem publications
  • Recommendations for offering co-authorships to GEOS-Chem developers
  • GEOS-Chem Search Engines

• GEOS-Chem Steering Committee
  • GEOS-Chem model development priorities
• GEOS-Chem Working Groups
  • Adjoint Model and Data Assimilation Working Group
  • Aerosols Working Group
  • Carbon Cycle Working Group
  • Chemistry-Ecosystem-Climate Working Group
  • GEOS-Chem High Performance Working Group
  • Hg and POPs Working Group
  • Chemistry Working Group
  • Emissions and Deposition Working Group
  • Transport Working Group
  • Stratospheric Working Group
• GEOS-Chem Nested Model

• Basic information about getting set up with GEOS-Chem
• GEOS-Chem User's Guide
• Using GEOS-Chem on the Amazon Web Services Cloud
• GCHP User's Guide
• Using WRF-GC: GEOS-Chem interfaced with WRF
• Frequently asked questions about GEOS-Chem

• Minimum system requirements for GEOS-Chem
• Downloading GEOS-Chem source code and data
• Creating GEOS-Chem run directories

GEOS-Chem Code Developers' Forums

• GEOS-Chem coding and debugging
  • GEOS-Chem coding style guide
  • List of GEOS-Chem bugs and in which version they were resolved
  • Currently unresolved issues in GEOS-Chem
  • Known GEOS-Chem issues caused by compiler bugs
  • Common GEOS-Chem error messages
  • Tips on how to debug GEOS-Chem effectively
  • Debugging with the GEOS-Chem unit tester
  • Performing Difference Tests with GEOS-Chem
  • Submitting GEOS-Chem support requests
  • Working with netCDF data files
• GEOS-Chem performance
  • Speeding up GEOS-Chem
  • Profiling GEOS-Chem
  • Parallelizing GEOS-Chem with the OpenMP directives
  • Passing array arguments efficiently in GEOS-Chem
  • Floating point math issues

• GEOS-Chem horizontal grids and vertical grids
• Overview of GMAO met data products
  • Version history of GMAO met data products
  • Available met data for nested grid simulations
  • List of reprocessed met fields
• GMAO MERRA-2
  • List of MERRA-2 met fields used by GEOS-Chem
  • Implementing MERRA-2 into GEOS-Chem
• GMAO GEOS-FP
  • List of GEOS-FP met fields used by GEOS-Chem
  • Implementing GEOS-FP into GEOS-Chem

• HEMCO emissions component
  • HEMCO data directories
  • The HEMCO User's Guide
  • HEMCO examples
  • HEMCO versions
• Emissions categories
  • Grid-independent emissions
  • Aerosol emissions
  • Aircraft emissions
  • Anthropogenic emissions
  • Scale factors for anthropogenic emissions
  • Biofuel emissions
  • Biogenic emissions
  • Biomass burning emissions
  • Lightning NOx emissions
  • Ship emissions
  • Soil NOx emissions
  • Volcanic emissions
  • Historical and future emissions

• GEOS-Chem chemistry mechanisms
  • Stratopsheric chemistry options
  • Specialty simulations
  • Photolysis mechanisms used in GEOS-Chem
• Species in GEOS-Chem
  • GEOS-Chem species database
  • Physical properties of GEOS-Chem species
  • GEOS-Chem species units
  • Species indexing in GEOS-Chem
• Adding species to GEOS-Chem
• Adding passive species to GEOS-Chem
• Other resources
  • FlexChem
  • Chemistry Issues
  • Centralized chemistry time step
  • Process Analysis Diagnostics
  • Linking GEOS-Chem to CMAQ
  • Coupling GEOS-Chem with RRTMG
  • DSMACC chemical box model

• Advection scheme TPCORE
• Boundary layer mixing
• Cloud convection
• Dynamic tropopause

• Dry deposition
  • Leaf area indices in GEOS-Chem
  • Olson land map
• Wet deposition

• Aerosol-only simulation
• Aerosol optical properties
• Aerosol thermodynamical equilibrium
• Carbonaceous aerosols
• Mineral dust aerosols
• Secondary organic aerosols
• Sea salt aerosols
• Sulfate aerosols
• Aerosol Microphysics
  • APM
  • TOMAS

• General info about GEOS-Chem benchmark simulations
  • List of GEOS-Chem 1-year benchmark simulations
  • Mean OH concentration
  • 1-month benchmark timing results
  • GEOS-Chem participation in community intercomparisons
  • Satellite Instrument Specifications Table

• GEOS-Chem nested grid simulations
• Setting up GEOS-Chem nested grid simulations
• Available met data for nested grid simulations
• Protocol for nested-grid data downloads
• Steps to setup new nested domains
• GEOS-Chem nested model publications

• Available diagnostics in GEOS-Chem
  • NetCDF format
  • Binary punch (aka bpch) format
  • ObsPack diagnostic
  • Planeflight diagnostic
• Archiving diagnostics from HEMCO to netCDF files
• Diagnostic time step
• Additional diagnostics

• GEOS-Chem HP
• GEOS-Chem Adjoint
• Coupling GEOS-Chem with other models
• FlexAOD
• ATom Related GEOS-Chem Projects
• Machine learning related to GEOS-Chem

• GEOS-Chem publications page on ResearcherID
• Presentations from the GCA1 meeting (2018)
• Presentations from the IGC8 Meeting (2017)
• Presentations from the IGC7 meeting (2015)
• Presentations from the IGC6 meeting (2013)

Reference Section

• Using IDL (Harris Geospatial Solutions site)
• Structures in IDL
• Pointers in IDL
• Overview of Mathematics in IDL
• IDL Astronomy User's Library
• JHU/APL/S1R IDL routines page
• Craig Markwardt's IDL library
• Reading binary files in IDL

• GAMAP web page
• GAMAP on-line users' guide
• GAMAP bugs and fixes
• GAMAP tips and tricks
  • General GAMAP usage
  • TVMAP cheat sheet
  • File I/O with GAMAP
    • Working with timeseries output in GAMAP
  • Color and graphics with GAMAP
    • Loading Color Tables in GAMAP v2.12
    • Working with color in IDL by Chris Holmes
  • Regridding with GAMAP
  • Date and time computations with GAMAP
  • Text manipulation with GAMAP

• Fortran tutorials
• GNU Fortran compiler
• Intel Fortran Compiler

• Perl.com
• Beginning Perl by Simon Cozens (free online book)
• Perl in 20 pages
• MediaWiki User's Guide
• Comprehensive Perl Archive Network (CPAN.org)

• The R project for statistical computing
• The R journal
• R by example
• Using R to analyze GEOS-Chem data

• Python code for GEOS-Chem
• Python.org: Main site for all things Python
• Python.org Tutorial
• PythonWiki.org: List of tutorials and resources
• Google's Python tutorial

• NCL main page
• NCL applications
• NCL documentation
• Sign up for NCL-Talk email list
• NCL4GC: NCL tools for GEOS-Chem

• Features of the GEOS-Chem public wiki
• Customizing your GEOS-Chem Wiki Settings
• Sandbox
• MediaWiki FAQ
• MediaWiki User's Guide
• Examples of Wiki markup text
• One-page editing reference card
• Configuration Settings list
• MediaWiki release mailing list