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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://acmg.seas.harvard.edu/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://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.]
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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 [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 [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].
  
 
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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 12#12.9.3|'''Current release: GEOS-Chem 12.9.3''']]</font>
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|width="450px" align="center" bgcolor="#CCFFFF"|<font size="+2">[[GEOS-Chem 14.0.2|'''Current release: GEOS-Chem 14.0.2''']]</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 ==
*'''11 Dec 2020:''' 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:gxl642@student.bham.ac.uk Gongda Lu] with issues or questions.
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*'''29 Nov 2022:''' [[GEOS-Chem 14.0.2]] is now available!
*'''06 Aug 2020:''' [[GEOS-Chem_12#12.9.3|GEOS-Chem 12.9.3]] is now available!
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*'''23 Feb 2022:''' Read the [[Media:GEOS-Chem_Newsletter_2022_Issue_2.pdf|GEOS-Chem Newsletter 2022, Issue #2]]
*'''30 May 2020''' Read the [[Media:GEOS-Chem_Newsletter_Spring_2020.pdf|GEOS-Chem Newsletter, Spring 2020 Edition]]!
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*'''11 Dec 2020:''' A [https://scholar.google.com/citations?user=ho-sNj4AAAAJ GEOS-Chem Google Scholar page] is now available!
*'''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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**Click 'Follow' to be notified of new publications.
*'''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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**Contact [mailto:gongda.lu@ucl.ac.uk Gongda Lu] with issues or questions.
*'''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!
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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>
*'''14 Jun 2019:''' We have overhauled the GEOS-Chem wiki to make content easier to understand. If you miss the old front page, it can still be viewed [[Main_Page_(June_2017)|HERE]].
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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
  
 
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]].
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=== GEOS-Chem manuals and tutorials ===
 
=== GEOS-Chem manuals and tutorials ===
  
The table below lists the various manual pages for GEOS-Chem and its related software packages.  
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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.
  
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Also see our list of [[Software_maintained_by_GEOS-Chem_community_members|'''software tools maintained by GEOS-Chem users''']].
  
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The user manual for GEOS-Chem 13.4.1 and prior versions may be found '''[[Getting Started with GEOS-Chem|HERE]]'''.
!width="200px" bgcolor="#CCCCCC"|Item
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!width="400px" bgcolor="#CCCCCC"|Description
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!width="350px" bgcolor="#CCCCCC"|Documentation is located at:
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=== General information about GEOS-Chem ===
|'''GEOS-Chem Classic'''
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|GEOS-Chem single-node implementation<br>(using 1-64 computational cores)
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|[[Getting Started with GEOS-Chem]] (on this wiki)
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The table below lists where you can find general information about GEOS-Chem.
|'''GCHP'''
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|GEOS-Chem multi-node "high performance" implementation<br>(using 100's - 1000's of computational cores)
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|[https://gchp.readthedocs.io gchp.readthedocs.io]
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|'''GEOS-Chem on the cloud'''
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|Instructions for running GEOS-Chem on the Amazon Web Services EC2 cloud-computing platform
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|[http://cloud.geos-chem.org cloud.geos-chem.org]
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|'''WRF-GC'''
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|GEOS-Chem coupled to the WRF GCM
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!width="360px" bgcolor="#CCCCCC"|Link
|[http://wrf.geos-chem.org wrf.geos-chem.org]
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!width="365px" bgcolor="#CCCCCC"|Description
  
 
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|'''HEMCO'''
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|'''GEOS-Chem website'''
|The Harmonized Emissions Component
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|[http://www.geos-chem.org geos-chem.org]
|[https://hemco.readthedocs.io hemco.readthedocs.io]
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|Website that links to GEOS-Chem information and resources
  
 
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|'''GCPy'''
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|'''Welcome Letter'''
|The GEOS-Chem Python Toolkit
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|[http://geos-chem.org/geos-welcome geos-chem.org/geos-welcome]
|[https://gcpy.readthedocs.io gcpy.readthedocs.io]
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|A welcome letter for new users of GEOS-Chem
  
 
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|'''GEOS-Chem Adjoint'''
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|'''GEOS-Chem Overview'''
|The GEOS-Chem adjoint model<br> (NOTE: maintained separately from GEOS-Chem)
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|[[GEOS-Chem overview]] (wiki page)
|[[GEOS-Chem Adjoint]] (on this wiki)
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|A page with linking to many GEOS-Chem topics.
  
 
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|'''GEOS-Chem Videos'''
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|'''GEOS-Chem Narrative'''
|Tutorial videos for GEOS-Chem, GCHP, HEMCO, GCPy, and related topics
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|[http://geos-chem.org/geos-chem-narrative geos-chem.org/geos-chem-narrative]
|[https://youtube.com/c/geos-chem youtube.com/c/geos-chem]
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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 Guides'''
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|'''GEOS-Chem New Developments'''
|Short manuals giving a deeper dive into various GEOS-Chem topics (such as compilers, netCDF, diagnostics, etc.)
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|[http://geos-chem.org/geos-new-developments geos-chem.org/geos-new-developments]
|[[GEOS-Chem overview#GEOS-Chem Guides|GEOS-Chem Guides]] (on this wiki)
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|A list of significant GEOS-Chem updates and the developers who worked on them
 
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|}
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=== General information about GEOS-Chem ===
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The table below lists where you can find general information about GEOS-Chem
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|'''GEOS-Chem Steering Committee (GCSC)'''
!width="400px" bgcolor="#CCCCCC"|Description
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|[http://geos-chem.org/geos-steering-cmte geos-chem.org/geos-steering-cmte]
!width="400px" bgcolor="#CCCCCC"|Documentation is located at:
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|A listing of current GCSC members and minutes from GCSC meetings
  
 
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|Welcome Letter
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|'''GEOS-Chem Working Groups'''
|A welcome letter for new users of GEOS-Chem
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|[http://geos-chem.org/geos-working-groups geos-chem.org/geos-working-groups]
|[[GEOS-Chem welcome letter for new users]] (wiki page)
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|A listing of GEOS-Chem Working Groups and Working Group Co-Chairs
  
 
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|GEOS-Chem Overview
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|'''GEOS-Chem Versions'''
|A welcome letter for new users of GEOS-Chem
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|[[GEOS-Chem versions]] (wiki page)
|[[GEOS-Chem overview]] (wiki page)
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|A listing of GEOS-Chem versions (with links for more information)
  
 
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|GEOS-Chem Versions
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|'''GEOS-Chem Species List'''
|A list of GEOS-Chem versions
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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)
|[[GEOS-Chem versions]] (wiki page)
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|A listing of the species used in the GEOS-Chem chemistry mechanisms
  
 
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|GEOS-Chem Species List
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|'''GEOS-Chem Guides'''
|Information about species used in the GEOS-Chem chemistry mechanisms
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|[[GEOS-Chem_overview#GEOS-Chem_Guides|GEOS-Chem Guides wiki page]]
|[[Guide to species in GEOS-Chem]] (wiki page)
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|Several user guides explaining topics in-depth
  
 
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|Requesting Suppport
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|'''Requesting Support'''
|A guide to creating GEOS-Chem support requests using the Github issue trackers
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|[https://geos-chem.readthedocs.io/en/latest/reference/SUPPORT.html GEOS-Chem support guidelines]
|[[Submitting GEOS-Chem support requests]] (wiki page)
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|Instructions for creating GEOS-Chem support requests using the Github issue trackers
  
 
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|-valign="top"
|Submitting code or data
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|'''Submitting code or data'''
|Guidelines for submitting new science updates or new data sources for inclusion into GEOS-Chem
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|[https://geos-chem.readthedocs.io/en/latest/reference/CONTRIBUTING.html GEOS-Chem contributing guidelines]
|[[Submitting updates for inclusion in GEOS-Chem]] (wiki page)
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|Instructions for submitting new source code or data updates to be included into GEOS-Chem.
  
 
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Latest revision as of 18:54, 30 November 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 14.0.2 Future releases

News

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

Documentation

GEOS-Chem manuals and tutorials

Read user manuals for GEOS-Chem 14 and related software.

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/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.