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The [http://www.as.harvard.edu/ctm/geos/ 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 [http://www.as.harvard.edu NASA Global Modeling and Assimilation Office]. It is applied by [http://www.as.harvard.edu/ctm/geos/geos_people.html research groups around the world] to a wide range of atmospheric composition problems, Central management and support of the model is provided by the [http://www.as.harvard.edu/ctm/ Atmospheric Chemistry Modeling Group] at Harvard University.
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|<p><font color="#FFFFFF" size="+3">'''GEOS&#150;Chem Wiki'''</font></p>
  
This wiki is meant to facilitate communication between GEOS-Chem users and developers.  If you would like to contribute to the wiki, please register as a user by clicking the appropriate link above.
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<big><big>This site is under construction!  Not all links have been activated yet.  Please check back here frequently for the latest updates!</big></big>
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== General Information about GEOS-Chem ==
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=== GEOS-Chem Personnel ===
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----
* [[Programming staff|GEOS-Chem Programming Staff]]
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=== Data Access ===
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<p align="center"><big>'''GEOS-Chem Community Mission: to advance understanding of human and natural influences on the environment<br>through a comprehensive, state-of-the-science, readily accessible global model of atmospheric composition.'''</big></p>
* [[Downloading GEOS-Chem|How to download GEOS-Chem and the data directories]]
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=== General Information ===
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The [http://geos-chem.org 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 [http://gmao.gsfc.nasa.gov/ NASA Global Modeling and Assimilation Office]. It is applied by [http://acmg.seas.harvard.edu/geos/geos_people.html research groups around the world] to a wide range of atmospheric composition problems. Central management and support of the model is provided by the [http://acmg.seas.harvard.edu/index.html Atmospheric Chemistry Modeling Group at Harvard University] and by the [https://sites.wustl.edu/acag/ Atmospheric Composition Analysis Group at Washington University].
* [[Minimum system requirements for GEOS-Chem]]
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* [[GEOS-Chem code development cycle]]
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* [[Parallelizing GEOS-Chem]] with the OpenMP directives
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* [[GEOS-Chem programming resources]] (e.g. tutorials, user guides, etc.)
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* [[http://www.as.harvard.edu/chemistry/trop/geos/doc/style/ GEOS-Chem Programming Style Guide]]
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=== Debugging ===
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* [[GEOS-Chem Debugging Tips|Tips on how to debug GEOS-Chem effectively]]
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* [[Reporting bugs|How to report a bug in GEOS-Chem]]
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* [[Error Messages|Common GEOS-Chem error messages]]
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== Code Developers' Forums ==
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These pages contain specific information about coding issues, emissions, chemistry, met fields, and other aspects of GEOS-Chem.
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|colspan="3" align="center" bgcolor="#CCCCCC"|'''<font size="+2">[[GEOS-Chem overview]]</font>'''
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|width="225px" align="center"|<font size="+2">[[GEOS-Chem versions|Past releases]]</font>
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|width="450px" align="center" bgcolor="#CCFFFF"|<font size="+2">[[GEOS-Chem 13.4.1|'''Current release: GEOS-Chem 13.4.1''']]</font>
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|width="225px" align="center"|<font size="+2">[[GEOS-Chem model development_priorities|Future releases]]</font>
  
=== Coding ===
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* [[Standard Code Development]]
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* [[Machine Issues|Machine Issues & Portability]]
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* [[Bugs and Fixes]]
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=== Emissions ===
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== News ==
* [[Anthropogenic Emissions]]
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*'''19 May 2022:''' [[GEOS-Chem 13.4.1]] is now available!
* [[Biofuel Emissions]]
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*'''24 Feb 2022:''' Read the [[Media:GEOS-Chem_Newsletter_2022_Issue_1.pdf|GEOS-Chem Newsletter 2022, Issue #1]]
* [[Biogenic Emissions]]
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*'''11 Dec 2020:''' A [https://scholar.google.com/citations?user=ho-sNj4AAAAJ GEOS-Chem Google Scholar page] is now available!
* [[Biomass Burning Emissions]]
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**Click 'Follow' to be notified of new publications.
* [[Lightning Emissions]]
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**Contact [mailto:gxl642@student.bham.ac.uk Gongda Lu] with issues or questions.
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*'''02 Apr 2020:''' The GEOS-Chem Youtube Channel has 100+ subscribers and a new URL: <tt>'''https://youtube.com/c/geoschem'''</tt>
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*'''03 Feb 2020:''' View our GEOS-Chem "dry-run" tutorial at our [http://youtube.geos-chem.org GEOS-Chem Youtube channel]
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*'''17 Sep 2019:''' NASA/GMAO is now producing [https://gmao.gsfc.nasa.gov/weather_prediction/GEOS-CF/ GEOS chemical forecasts (GEOS-CF)] using GEOS-Chem coupled to the NASA/GEOS ESM
  
=== Chemistry ===
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For access to all past GEOS-Chem newsletters, visit [[GEOS-Chem newsletters|this page]].
* [[NOx-Ox-HC-aerosol|NOx-Ox-hydrocarbon-aerosol (aka "full-chemistry") simulation]]
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* [[Mercury|Mercury simulation]]
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=== Met Fields ===
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== Documentation ==
* [[GEOS-5 Issues]]
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* [[http://www.as.harvard.edu:16080/chemistry/trop/geos/doc/man/gc_a4.html GEOS-Chem Met Fields (from website)]]
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=== Related Projects ===
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=== GEOS-Chem manuals and tutorials ===
* [[GEOS-Chem Adjoint]]
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* [http://coco.atmos.washington.edu/cgi-bin/ion-p?page=arctas.ion|GEOS-Chem Near-Real-Time Simulations]
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== Wiki Documentation ==
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[https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/related-docs.html '''Follow this link'''] for a list of user manuals and tutorials for GEOS-Chem and related software.
* [http://meta.wikimedia.org/wiki/Help:Contents MediaWiki User's Guide]
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* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration Settings list]
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=== General information about GEOS-Chem ===
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
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* [http://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
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The table below lists where you can find general information about GEOS-Chem.
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!width="200px" bgcolor="#CCCCCC"|Item
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!width="360px" bgcolor="#CCCCCC"|Link
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!width="365px" bgcolor="#CCCCCC"|Description
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|'''GEOS-Chem website'''
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|[http://www.geos-chem.org geos-chem.org]
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|Website that links to GEOS-Chem information and resources
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|'''Welcome Letter'''
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|[http://geos-chem.org/geos-welcome geos-chem.org/geos-welcome]
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|A welcome letter for new users of GEOS-Chem
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|'''GEOS-Chem Overview'''
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|[[GEOS-Chem overview]] (wiki page)
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|A page with linking to many GEOS-Chem topics.
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|'''GEOS-Chem Narrative'''
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|[http://geos-chem.org/geos-chem-narrative geos-chem.org/geos-chem-narrative]
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|A narrative descrption of GEOS-Chem that you can include in scientific papers (plus instructions for citing GEOS-Chem)
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|'''GEOS-Chem New Developments'''
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|[http://geos-chem.org/geos-new-developments geos-chem.org/geos-new-developments]
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|A list of significant GEOS-Chem updates and the developers who worked on them
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|'''GEOS-Chem Steering Committee (GCSC)'''
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|[http://geos-chem.org/geos-steering-cmte geos-chem.org/geos-steering-cmte]  
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|A listing of current GCSC members and minutes from GCSC meetings
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|'''GEOS-Chem Working Groups'''
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|[http://geos-chem.org/geos-working-groups geos-chem.org/geos-working-groups]
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|A listing of GEOS-Chem Working Groups and Working Group Co-Chairs
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|'''GEOS-Chem Versions'''
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|[[GEOS-Chem versions]] (wiki page)
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|A listing of GEOS-Chem versions (with links for more information)
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|'''GEOS-Chem Species List'''
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|[https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/species-guide.html View GEOS-Chem Species properties] (ReadTheDocs page)
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|A listing of the species used in the GEOS-Chem chemistry mechanisms
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|-valign="top"
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|'''GEOS-Chem Guides'''
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|[[GEOS-Chem_overview#GEOS-Chem_Guides|GEOS-Chem Guides wiki page]]
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|Several user guides explaining topics in-depth
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|-valign="top"
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|'''Requesting Support'''
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|[https://geos-chem.readthedocs.io/en/latest/reference/SUPPORT.html GEOS-Chem support guidelines]
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|Instructions for creating GEOS-Chem support requests using the Github issue trackers
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|-valign="top"
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|'''Submitting code or data'''
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|[https://geos-chem.readthedocs.io/en/latest/reference/CONTRIBUTING.html GEOS-Chem contributing guidelines]
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|Instructions for submitting new source code or data updates to be included into GEOS-Chem.
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Revision as of 22:18, 9 August 2022

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 and by the Atmospheric Composition Analysis Group at Washington University.

GEOS-Chem overview
Past releases Current release: GEOS-Chem 13.4.1 Future releases

News

For access to all past GEOS-Chem newsletters, visit this page.

Documentation

GEOS-Chem manuals and tutorials

Follow this link for a list of user manuals and tutorials for GEOS-Chem and related software.

General information about GEOS-Chem

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

Item Link Description
GEOS-Chem website geos-chem.org Website that links to GEOS-Chem information and resources
Welcome Letter geos-chem.org/geos-welcome 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.org/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.org/geos-new-developments A list of significant GEOS-Chem updates and the developers who worked on them
GEOS-Chem Steering Committee (GCSC) geos-chem.org/geos-steering-cmte A listing of current GCSC members and minutes from GCSC meetings
GEOS-Chem Working Groups geos-chem.org/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 View GEOS-Chem Species properties (ReadTheDocs page) A listing of the species used in the GEOS-Chem chemistry mechanisms
GEOS-Chem Guides GEOS-Chem Guides wiki page Several user guides explaining topics in-depth
Requesting Support GEOS-Chem support guidelines Instructions for creating GEOS-Chem support requests using the Github issue trackers
Submitting code or data GEOS-Chem contributing guidelines Instructions for submitting new source code or data updates to be included into GEOS-Chem.