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<big>'''GEOS-Chem Wiki'''</big>
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|<p><font color="#FFFFFF" size="+3">'''GEOS&#150;Chem Wiki'''</font></p>
  
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/index.html Atmospheric Chemistry Modeling Group at Harvard University].
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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 ''create account'' at the top right corner of this page.
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== General Information about GEOS-Chem ==
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The links below provide more information about general GEOS-Chem topics.
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----
  
=== Introduction and Overview ===
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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>
* [http://www.as.harvard.edu/ctm/geos/geos_overview.html GEOS-Chem Overview]
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* [http://www.as.harvard.edu/ctm/geos/geos_vision.html GEOS-Chem Vision]
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* [http://www.as.harvard.edu/ctm/geos/geos_charter.html GEOS-Chem Management Charter]
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* [http://www.as.harvard.edu/ctm/geos/geos_people GEOS-Chem People & Projects]
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* [[GEOS-Chem welcome letter for new users]]
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* [[GEOS-Chem programming staff]]
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=== Getting Started with GEOS-Chem ===
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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] 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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* [[Downloading GEOS-Chem source code and data]]
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* [[GEOS-Chem code development cycle]]
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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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=== General Technical Information ===
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* [[GEOS-Chem Debugging Tips|Tips on how to debug GEOS-Chem effectively]]
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* [[Reporting GEOS-Chem bugs]]
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* [[Parallelizing GEOS-Chem]] with the OpenMP directives
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* [[Common GEOS-Chem error messages]]
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== Code Developers' Forums ==
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{|border="1" width="925px" bordercolor="#000000" cellspacing="0" cellpadding="5"
  
These pages contain more specific information about coding issues, emissions, chemistry, met fields, version history, and other aspects of GEOS-Chem. GEOS-Chem users and developers should feel free to contribute to these pages and to initiate discussion on the various topics listed here.
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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 13.3.4|'''Current release: GEOS-Chem 13.3.4''']]</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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* [[GEOS-Chem versions under development]]
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* [[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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*'''07 Dec 2021:''' [[GEOS-Chem 13.3.4]] is now available!
* [[Biofuel emissions]]
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*'''19 Sep 2021:''' Read the [[Media:GEOS-Chem_Newsletter_Winter_2021.pdf|GEOS-Chem Newsletter, Winter 2021]]
* [[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 NOx 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 ==
* [[GCAP]]
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* [[GEOS-5]]
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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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The table below lists the various manual pages for GEOS-Chem and its related software packages.
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
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* [http://meta.wikimedia.org/wiki/Help:Contents MediaWiki User's Guide]
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{| border=1 cellpadding=5 cellspacing=0
* [http://meta.wikimedia.org/wiki/Help:Wikitext Examples of Wiki markup text]
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* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration Settings list]
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* [http://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
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!width="200px" bgcolor="#CCCCCC"|Item
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!width="360px" bgcolor="#CCCCCC"|Link
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!width="375px" bgcolor="#CCCCCC"|Description
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|'''GEOS-Chem Classic'''
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|[[Getting Started with GEOS-Chem]] (wiki page)
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*NOTE: Will be ported to geos-chem.readthedocs.io soon
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|GEOS-Chem single-node implementation<br>(using 1-64 computational cores)
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|-valign="top"
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|'''GCHP'''
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|[https://gchp.readthedocs.io gchp.readthedocs.io]
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|GEOS-Chem multi-node "high performance" implementation<br>(using 100's - 1000's of computational cores)
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|-valign="top"
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|'''GEOS-Chem on the cloud'''
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|[http://cloud.geos-chem.org cloud.geos-chem.org]
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|Instructions for running GEOS-Chem on the Amazon Web Services EC2 cloud-computing platform
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|-valign="top"
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|'''WRF-GC'''
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|[http://wrf.geos-chem.org wrf.geos-chem.org]
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|GEOS-Chem coupled to the WRF GCM
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|-valign="top"
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|'''HEMCO'''
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|[https://hemco.readthedocs.io hemco.readthedocs.io]
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|The Harmonized Emissions Component
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|-valign="top"
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|'''GCPy'''
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|[https://gcpy.readthedocs.io gcpy.readthedocs.io]
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|The GEOS-Chem Python Toolkit
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|-valign="top"
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|'''KPP-for-GEOS-Chem'''
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|[https://kpp.readthedocs.io kpp.readthedocs.io]
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|The Kinetic PreProcessor (KPP), customized for GEOS-Chem
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|-valign="top"
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|'''GEOS-Chem Adjoint'''
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|[[GEOS-Chem Adjoint]] (wiki page)
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|The GEOS-Chem adjoint model<br> (NOTE: maintained separately from GEOS-Chem)
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|-valign="top"
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|'''GEOS-Chem Videos'''
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|[https://youtube.com/c/geos-chem youtube.com/c/geos-chem]
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|Tutorial videos for GEOS-Chem, GCHP, HEMCO, GCPy, etc., and recordings of GEOS-Chem meeting sessions
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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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|Short manuals giving a deeper dive into various GEOS-Chem topics (such as compilers, netCDF, diagnostics, etc.)
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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.
 +
 
 +
{| border=1 cellpadding=5 cellspacing=0
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|-valign="top"
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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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|-valign="top"
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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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|-valign="top"
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|'''Welcome Letter'''
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|[[GEOS-Chem welcome letter for new users]] (wiki page)
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|A welcome letter for new users of GEOS-Chem
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|-valign="top"
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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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|-valign="top"
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|'''GEOS-Chem Narrative'''
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|[http://geos-chem.org/geos_chem_narrative.html geos-chem.org/geos_chem_narrative.html]
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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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|-valign="top"
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|'''GEOS-Chem New Developments'''
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|[http://geos-chem.org/geos_new_developments.html geos-chem.org/geos_new_developments.html]
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|A list of significant GEOS-Chem updates and the developers who worked on them
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|-valign="top"
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|'''GEOS-Chem Steering Committee (GCSC)'''
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|[http://www.geos-chem.org/geos_steering_cmte.html geos-chem.org/geos_steering_cmte.html]  
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|A listing of current GCSC members and minutes from GCSC meetings
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|-valign="top"
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|'''GEOS-Chem Working Groups'''
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|[http://www.geos-chem.org/geos_working_groups.html geos-chem.org/geos_working_groups.html]
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|A listing of GEOS-Chem Working Groups and Working Group Co-Chairs
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|-valign="top"
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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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|-valign="top"
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|'''GEOS-Chem Species List'''
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|[[Guide to species in GEOS-Chem]] (wiki 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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|'''Requesting Support'''
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|[[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"
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|'''Submitting code or data'''
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|[[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 15:19, 4 January 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 13.3.4 Future releases

News

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

Documentation

GEOS-Chem manuals and tutorials

The table below lists the various manual pages for GEOS-Chem and its related software packages.

Item Link Description
GEOS-Chem Classic Getting Started with GEOS-Chem (wiki page)
  • NOTE: Will be ported to geos-chem.readthedocs.io soon
GEOS-Chem single-node implementation
(using 1-64 computational cores)
GCHP gchp.readthedocs.io GEOS-Chem multi-node "high performance" implementation
(using 100's - 1000's of computational cores)
GEOS-Chem on the cloud cloud.geos-chem.org Instructions for running GEOS-Chem on the Amazon Web Services EC2 cloud-computing platform
WRF-GC wrf.geos-chem.org GEOS-Chem coupled to the WRF GCM
HEMCO hemco.readthedocs.io The Harmonized Emissions Component
GCPy gcpy.readthedocs.io The GEOS-Chem Python Toolkit
KPP-for-GEOS-Chem kpp.readthedocs.io The Kinetic PreProcessor (KPP), customized for GEOS-Chem
GEOS-Chem Adjoint GEOS-Chem Adjoint (wiki page) The GEOS-Chem adjoint model
(NOTE: maintained separately from GEOS-Chem)
GEOS-Chem Videos youtube.com/c/geos-chem Tutorial videos for GEOS-Chem, GCHP, HEMCO, GCPy, etc., and recordings of GEOS-Chem meeting sessions
GEOS-Chem Guides GEOS-Chem Guides (wiki page) Short manuals giving a deeper dive into various GEOS-Chem topics (such as compilers, netCDF, diagnostics, etc.)

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 welcome letter for new users (wiki page) 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.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/geos_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/geos_steering_cmte.html A listing of current GCSC members and minutes from GCSC meetings
GEOS-Chem Working Groups geos-chem.org/geos_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 Guide to species in GEOS-Chem (wiki page) A listing of the species used in the GEOS-Chem chemistry mechanisms
Requesting Support Submitting GEOS-Chem support requests (wiki page) Instructions for creating GEOS-Chem support requests using the Github issue trackers
Submitting code or data Submitting updates for inclusion in GEOS-Chem (wiki page) Instructions for submitting new source code or data updates to be included into GEOS-Chem.