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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>
<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>


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].
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 [https://geoschem.github.io/geos-chem-people-projects-map/ research groups around the world] to a wide range of atmospheric composition problems. Central management and support of the model is provided by the [https://acmg.seas.harvard.edu/ Atmospheric Chemistry Modeling Group at Harvard University] and by the [https://sites.wustl.edu/acag/ Atmospheric Composition Analysis Group at Washington University].


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|width="225px" align="center"|<font size="+2">[[GEOS-Chem versions|Past releases]]</font>
|width="225px" align="center"|<font size="+2">[[GEOS-Chem versions|Past releases]]</font>
|width="450px" align="center" bgcolor="#CCFFFF"|<font size="+2">[[GEOS-Chem 13.4.1|'''Current release: GEOS-Chem 13.4.1''']]</font>
|width="450px" align="center" bgcolor="#CCFFFF"|<font size="+2">[[GEOS-Chem 14.4.2|'''Current release: GEOS-Chem 14.4.2''']]</font>
|width="225px" align="center"|<font size="+2">[[GEOS-Chem model development_priorities|Future releases]]</font>
|width="225px" align="center"|<font size="+2">[[GEOS-Chem model development_priorities|Future releases]]</font>


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== News ==
== News ==
*'''19 May 2022:''' [[GEOS-Chem 13.4.1]] is now available!
*25 Jun 2024: [[GEOS-Chem 14.4.2]] is now available!
*'''24 Feb 2022:''' Read the [[Media:GEOS-Chem_Newsletter_2022_Issue_1.pdf|GEOS-Chem Newsletter 2022, Issue #1]]
*03 Jul 2024: We have started migrating older content to the [[GEOS-Chem Wiki archives]].
*'''11 Dec 2020:''' A [https://scholar.google.com/citations?user=ho-sNj4AAAAJ GEOS-Chem Google Scholar page] is now available!
*02 Feb 2024: Read the [https://drive.google.com/file/d/1v0cHAf6S8EMpUZNb7eVqvcRwbIAIxpRI/view?usp=sharing GEOS-Chem Newsletter 2024, Issue #1]
*A [https://scholar.google.com/citations?user=ho-sNj4AAAAJ GEOS-Chem Google Scholar page] is now available!
**Click 'Follow' to be notified of new publications.
**Click 'Follow' to be notified of new publications.
**Contact [mailto:gxl642@student.bham.ac.uk Gongda Lu] with issues or questions.
**Contact [mailto:rebekah.horner.20@ucl.ac.uk Bex Horner] with issues or questions.
*'''02 Apr 2020:''' The GEOS-Chem Youtube Channel has 100+ subscribers and a new URL: <tt>'''https://youtube.com/c/geoschem'''</tt>
*The GEOS-Chem Youtube Channel has 350+ subscribers and a new URL: <tt>'''https://www.youtube.com/~geoschem'''</tt>
*'''03 Feb 2020:''' View our GEOS-Chem "dry-run" tutorial at our [http://youtube.geos-chem.org GEOS-Chem Youtube channel]
*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
*'''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


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


== Documentation ==
== Documentation ==
=== Archives ===
In order to prepare for a migration of the wiki platform, we have archived many of the oldest wiki pages to PDF format.  Please see our '''[[GEOS-Chem Wiki archives]]''' to view these pages.


=== GEOS-Chem manuals and tutorials ===
=== GEOS-Chem manuals and tutorials ===


[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 (versions 14.0.0 and later) and related software.
Read [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/related-docs.html '''user manuals'''] for GEOS-Chem 14 and related software.  Also see our [[GEOS-Chem in CESM]] wiki page for more information about running GEOS-Chem in the NCAR CESM Earth System Model.
 
Also see our list of [[Software_maintained_by_GEOS-Chem_community_members|'''software tools maintained by GEOS-Chem users''']].


The user manual for GEOS-Chem 13.4.0 and prior versions remains at ''[[Getting Started with GEOS-Chem]]''.
The user manual for GEOS-Chem 13.4.1 and prior versions may be found '''[https://geoschem.github.io/gcclassic-manpage-archive/ HERE]'''.


=== General information about GEOS-Chem ===
=== General information about GEOS-Chem ===
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|'''Welcome Letter'''
|'''Welcome Letter'''
|[http://geos-chem.org/geos-welcome geos-chem.org/geos-welcome]
|[http://geos-chem.org/welcome.html geos-chem.org/welcome.html]
|A welcome letter for new users of GEOS-Chem
|A welcome letter for new users of GEOS-Chem


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|'''GEOS-Chem Narrative'''
|'''GEOS-Chem Narrative'''
|[http://geos-chem.org/geos-chem-narrative geos-chem.org/geos-chem-narrative]
|[http://geos-chem.org/narrative.html geos-chem.org/narrative.html]
|A narrative descrption of GEOS-Chem that you can include in scientific papers (plus instructions for citing GEOS-Chem)
|A narrative descrption of GEOS-Chem that you can include in scientific papers (plus instructions for citing GEOS-Chem)


|-valign="top"
|-valign="top"
|'''GEOS-Chem New Developments'''
|'''GEOS-Chem New Developments'''
|[http://geos-chem.org/geos-new-developments geos-chem.org/geos-new-developments]
|[http://geos-chem.org/new-developments.html geos-chem.org/new-developments.html]
|A list of significant GEOS-Chem updates and the developers who worked on them
|A list of significant GEOS-Chem updates and the developers who worked on them


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|-valign="top"
|'''GEOS-Chem Steering Committee (GCSC)'''
|'''GEOS-Chem Steering Committee (GCSC)'''
|[http://geos-chem.org/geos-steering-cmte geos-chem.org/geos-steering-cmte]  
|[http://geos-chem.org/steering-committee.html geos-chem.org/steering-committee.html]  
|A listing of current GCSC members and minutes from GCSC meetings
|A listing of current GCSC members and minutes from GCSC meetings


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|-valign="top"
|'''GEOS-Chem Working Groups'''
|'''GEOS-Chem Working Groups'''
|[http://geos-chem.org/geos-working-groups geos-chem.org/geos-working-groups]  
|[http://geos-chem.org/working-groups geos-chem.org/working-groups.html]  
|A listing of GEOS-Chem Working Groups and Working Group Co-Chairs
|A listing of GEOS-Chem Working Groups and Working Group Co-Chairs


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|'''GEOS-Chem Guides'''
|'''GEOS-Chem Guides'''
|[[GEOS-Chem_overview#GEOS-Chem_Guides|GEOS-Chem Guides wiki page]]
|[[GEOS-Chem_overview#GEOS-Chem_Guides|GEOS-Chem Guides (wiki page)]]
|Several user guides explaining topics in-depth
|List of several user guides explaining topics in-depth


|-valign="top"
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|'''Requesting Support'''
|'''Requesting Support'''
|[https://geos-chem.readthedocs.io/en/latest/reference/SUPPORT.html GEOS-Chem support guidelines]
|[https://geos-chem.readthedocs.io/en/latest/help-and-reference/SUPPORT.html GEOS-Chem support guidelines]
|Instructions for creating GEOS-Chem support requests using the Github issue trackers
|ReadTheDocs page with instructions for creating GEOS-Chem support requests using the Github issue trackers


|-valign="top"
|-valign="top"
|'''Submitting code or data'''
|'''Submitting code or data'''
|[https://geos-chem.readthedocs.io/en/latest/reference/CONTRIBUTING.html GEOS-Chem contributing guidelines]
|[https://geos-chem.readthedocs.io/en/latest/help-and-reference/CONTRIBUTING.html GEOS-Chem contributing guidelines]
|Instructions for submitting new source code or data updates to be included into GEOS-Chem.
|ReadTheDocs page with instructions for submitting new source code or data updates to be included into GEOS-Chem.


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Revision as of 15:14, 26 July 2024

GEOS&#150;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 14.4.2 Future releases

News

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

Documentation

Archives

In order to prepare for a migration of the wiki platform, we have archived many of the oldest wiki pages to PDF format. Please see our GEOS-Chem Wiki archives to view these pages.

GEOS-Chem manuals and tutorials

Read user manuals for GEOS-Chem 14 and related software. Also see our GEOS-Chem in CESM wiki page for more information about running GEOS-Chem in the NCAR CESM Earth System Model.

Also see our list of software tools maintained by GEOS-Chem users.

The user manual for GEOS-Chem 13.4.1 and prior versions may be found HERE.

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/welcome.html 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/narrative.html 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/new-developments.html A list of significant GEOS-Chem updates and the developers who worked on them
GEOS-Chem Steering Committee (GCSC) geos-chem.org/steering-committee.html A listing of current GCSC members and minutes from GCSC meetings
GEOS-Chem Working Groups geos-chem.org/working-groups.html 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) List of several user guides explaining topics in-depth
Requesting Support GEOS-Chem support guidelines ReadTheDocs page with instructions for creating GEOS-Chem support requests using the Github issue trackers
Submitting code or data GEOS-Chem contributing guidelines ReadTheDocs page with instructions for submitting new source code or data updates to be included into GEOS-Chem.
Retrieved from "https://wiki.seas.harvard.edu/geos-chem/index.php?title=Main_Page&oldid=54060"