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        <revisions>
          <rev user="Melissa Payer" timestamp="2024-04-02T16:25:17Z" comment="" contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">__NOTOC__
{|border=&quot;1&quot; width=&quot;925px&quot; bordercolor=&quot;#000000&quot; cellspacing=&quot;0&quot; cellpadding=&quot;5&quot;
 
|-valign=&quot;middle&quot; height=&quot;80&quot; bgcolor=&quot;##4494cc;&quot; align=&quot;center&quot;
|&lt;p&gt;&lt;font color=&quot;#FFFFFF&quot; size=&quot;+3&quot;&gt;'''GEOS&amp;#150;Chem Wiki'''&lt;/font&gt;&lt;/p&gt;

|}

{|border=&quot;0&quot; width=&quot;925px&quot; bordercolor=&quot;#FFFFFF&quot; cellspacing=&quot;0&quot; cellpadding=&quot;5&quot;

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----

&lt;p align=&quot;center&quot;&gt;&lt;big&gt;'''GEOS-Chem Community Mission: to advance understanding of human and natural influences on the environment&lt;br&gt;through a comprehensive, state-of-the-science, readily accessible global model of atmospheric composition.'''&lt;/big&gt;&lt;/p&gt;

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].

|}

{|border=&quot;1&quot; width=&quot;925px&quot; bordercolor=&quot;#000000&quot; cellspacing=&quot;0&quot; cellpadding=&quot;5&quot;

|-valign=&quot;top&quot;
|colspan=&quot;3&quot; align=&quot;center&quot; bgcolor=&quot;#CCCCCC&quot;|'''&lt;font size=&quot;+2&quot;&gt;[[GEOS-Chem overview]]&lt;/font&gt;'''
|-valign=&quot;top&quot;
|width=&quot;225px&quot; align=&quot;center&quot;|&lt;font size=&quot;+2&quot;&gt;[[GEOS-Chem versions|Past releases]]&lt;/font&gt;
|width=&quot;450px&quot; align=&quot;center&quot; bgcolor=&quot;#CCFFFF&quot;|&lt;font size=&quot;+2&quot;&gt;[[GEOS-Chem 14.3.1|'''Current release: GEOS-Chem 14.3.1''']]&lt;/font&gt;
|width=&quot;225px&quot; align=&quot;center&quot;|&lt;font size=&quot;+2&quot;&gt;[[GEOS-Chem model development_priorities|Future releases]]&lt;/font&gt;

|}

== News ==
*02 Apr 2024: [[GEOS-Chem 14.3.1]] 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.
**Contact [mailto:rebekah.horner.20@ucl.ac.uk Bex Horner] with issues or questions.
*The GEOS-Chem Youtube Channel has 350+ subscribers and a new URL: &lt;tt&gt;'''https://www.youtube.com/~geoschem'''&lt;/tt&gt;
*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]].

== Documentation ==

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

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 list of [[Software_maintained_by_GEOS-Chem_community_members|'''software tools maintained by GEOS-Chem users''']].

The user manual for GEOS-Chem 13.4.1 and prior versions may be found '''[[Getting Started with GEOS-Chem|HERE]]'''.

=== General information about GEOS-Chem ===

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

{| border=1 cellpadding=5 cellspacing=0

|-valign=&quot;top&quot;
!width=&quot;200px&quot; bgcolor=&quot;#CCCCCC&quot;|Item
!width=&quot;360px&quot; bgcolor=&quot;#CCCCCC&quot;|Link
!width=&quot;365px&quot; bgcolor=&quot;#CCCCCC&quot;|Description

|-valign=&quot;top&quot;
|'''GEOS-Chem website'''
|[http://www.geos-chem.org geos-chem.org]
|Website that links to GEOS-Chem information and resources

|-valign=&quot;top&quot;
|'''Welcome Letter'''
|[http://geos-chem.org/welcome.html geos-chem.org/welcome.html]
|A welcome letter for new users of GEOS-Chem

|-valign=&quot;top&quot;
|'''GEOS-Chem Overview'''
|[[GEOS-Chem overview]] (wiki page)
|A page with linking to many GEOS-Chem topics.

|-valign=&quot;top&quot;
|'''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)

|-valign=&quot;top&quot;
|'''GEOS-Chem 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

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

|-valign=&quot;top&quot;
|'''GEOS-Chem 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

|-valign=&quot;top&quot;
|'''GEOS-Chem Versions'''
|[[GEOS-Chem versions]] (wiki page)
|A listing of GEOS-Chem versions (with links for more information)

|-valign=&quot;top&quot;
|'''GEOS-Chem Species List'''
|[https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/species-guide.html View GEOS-Chem Species properties] (ReadTheDocs page)
|A listing of the species used in the GEOS-Chem chemistry mechanisms

|-valign=&quot;top&quot;
|'''GEOS-Chem Guides'''
|[[GEOS-Chem_overview#GEOS-Chem_Guides|GEOS-Chem Guides (wiki page)]]
|List of several user guides explaining topics in-depth

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

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

|}</rev>
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