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__NOTOC__
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|<p><font color="#FFFFFF" size="+3">'''GEOS&#150;Chem Wiki'''</font></p>
<th colspan="2" height="80" valign="middle"><p><font color="#FFFFFF" size="+3">GEOS&#150;Chem Wiki</font></p></th>
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<blockquote><p align="justify">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.]</p></blockquote>
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<blockquote><p align="justify">This wiki is meant to facilitate communication between GEOS-Chem users and developers. If this is '''your first time here''', check out [[Features of the GEOS-Chem public wiki|the features page]]. 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.</p></blockquote>
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<blockquote><p align="justify">New information is continually being added to the wiki, so please check back here often, or even better, [[Features_of_the_GEOS-Chem_public_wiki#Let_the_GEOS-Chem_wiki_inform_you_of_recent_changes.21|subscribe to the recent changes' RSS feed]]: you will not miss a discussion!</p></blockquote>
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----
<table width="800px" border="1" bordercolor="#000000" cellspacing="0" cellpadding=10">
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<tr>
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  <td width="300px" bgcolor="#CCCCCC"><p align="center"><big><strong>Previous version:</strong></big></p></td>
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  <td width="250px"><p align="center"><big><strong>[[GEOS-Chem v9-02]]</strong></big></p></td>
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  <td width="250px"><p align="center"><big><strong>[[GEOS-Chem v9-02 benchmark history|v9-02 benchmark history]]</strong></big></p></td>
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</tr>
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<tr>
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  <td bgcolor="#CCFFFF"><p align="center"><big><strong>Current provisional release:</strong></big></p></td>
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  <td bgcolor="#CCFFFF"><p align="center"><big><strong>[[GEOS-Chem v10-01]]</strong></big></p></td>
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  <td bgcolor="#CCFFFF"><p align="center"><big><strong>[[GEOS-Chem v10-01 benchmark history|v10-01 benchmark history]]</strong></big></p></td>
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</tr>
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<tr>
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  <td width="300px" bgcolor="#CCCCCC"><p align="center"><big><strong>Next version:</strong></big></p></td>
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  <td width="250px"><p align="center"><big><strong>[[GEOS-Chem v11-01]]</strong></big></p></td>
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  <td width="250px"><p align="center"><big><strong>[[GEOS-Chem v11-01 benchmark history|v11-01 benchmark history]]</strong></big></p></td>
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</tr>
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<tr>
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  <td bgcolor="#CCCCCC"><p align="center"><big><strong>Supported meteorological fields:</strong></big></p></td>
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  <td><p align="center"><big><strong>[[Overview_of_GMAO_met_data_products#GMAO_met_field_comparison_chart|Refer to this table]]</strong></big>
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</p></td>
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  <td>&nbsp;</td>
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<tr>
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  <td bgcolor="#CCCCCC"><p align="center"><big><strong>List of publications:</strong></big></p></td>
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  <td><p align="center"><big><strong>[http://acmg.seas.harvard.edu/geos/geos_pub.html Refer to this page]</strong></big>
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</p></td>
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  <td>&nbsp;</td>
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</tr>
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</table>
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</blockquote>
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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>
<!-- ===== GENERAL INFO ABOUT GEOS-CHEM                ===== -->
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<p>&nbsp;</p>
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<table width="100%" border="1" bordercolor="#000000" cellspacing="0" cellpadding="5" align="center">
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<tr bgcolor="#00AAAA">
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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].
<th colspan="2" height="50" valign="middle"><p><font color="#FFFFFF" size="+2">General information about GEOS&#150;Chem</font></p></th>
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</tr>
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|}
<!-- ===== GENERAL INFO : FIRST ROW                    ===== -->
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{|border="1" width="925px" bordercolor="#000000" cellspacing="0" cellpadding="5"
<tr bgcolor="#cccccc">
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<th width="50%"scope="col"><big>Introduction and overview</big></th>
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<th width="50%"scope="col"><big>Steering Committee And Working Groups</big></th>
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</tr>
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<tr>
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|colspan="3" align="center" bgcolor="#CCCCCC"|'''<font size="+2">[[GEOS-Chem overview]]</font>'''
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|-valign="top"
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|width="225px" align="center"|<font size="+2">[[GEOS-Chem versions|Past releases]]</font>
 +
|width="450px" align="center" bgcolor="#CCFFFF"|<font size="+2">[[GEOS-Chem 13.3.4|'''Current release: GEOS-Chem 13.3.4''']]</font>
 +
|width="225px" align="center"|<font size="+2">[[GEOS-Chem model development_priorities|Future releases]]</font>
  
<!-- Introduction & Overview: Links -->
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|}
<td width="50%" valign="top">
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* [[GEOS-Chem welcome letter for new users]]
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* [[Features of the GEOS-Chem public wiki]]
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* [http://acmg.seas.harvard.edu/geos/geos_overview.html GEOS-Chem Overview]
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* [http://acmg.seas.harvard.edu/geos/geos_people.html GEOS-Chem People & Projects]
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* [http://acmg.seas.harvard.edu/geos/word_pdf_docs/resources_guidelines_tips.pdf User Resources, Code Development Guidelines, and Debugging Tips]
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* [[GEOS-Chem Support Team]]
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* [[GEOS-Chem newsletters]]
+
* [http://acmg.seas.harvard.edu/geos/geos_search.html GEOS-Chem Search Engines]
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* [http://acmg.seas.harvard.edu/geos/geos_new_developments.html Recommendations for offering co-authorships to GEOS-Chem developers]
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* [http://acmg.seas.harvard.edu/geos/geos_dev_history.html GEOS-Chem code development history]
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</td>
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== News ==
 +
*'''07 Dec 2021:''' [[GEOS-Chem 13.3.4]] is now available!
 +
*'''19 Sep 2021:''' Read the [[Media:GEOS-Chem_Newsletter_Winter_2021.pdf|GEOS-Chem Newsletter, Winter 2021]]
 +
*'''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.
 +
*'''02 Apr 2020:''' The GEOS-Chem Youtube Channel has 100+ subscribers and a new URL: <tt>'''https://youtube.com/c/geoschem'''</tt>
 +
*'''03 Feb 2020:''' View our GEOS-Chem "dry-run" tutorial at our [http://youtube.geos-chem.org GEOS-Chem Youtube channel]
 +
*'''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
  
<!-- Steering Committee and Working Groups: Links -->
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For access to all past GEOS-Chem newsletters, visit [[GEOS-Chem newsletters|this page]].
<td width="50%" valign="top">
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* [http://acmg.seas.harvard.edu/geos/geos_steering_cmte.html GEOS-Chem Steering Committee]
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** [[GEOS-Chem model development priorities]]
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* [http://acmg.seas.harvard.edu/geos/geos_working_groups.html GEOS-Chem Working Groups]
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** [[GEOS-Chem Adjoint|Adjoint Model and Data Assimilation Working Group]]
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** [[Aerosols Working Group]]
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** [[Carbon Cycle Working Group]]
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** [[Chemistry-Climate Working Group]]
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** [[Hg and POPs Working Group]]
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** [[Organics Working Group]]
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** [[Chemistry Issues|Oxidants and Chemistry Working Group]]
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** [[Nested Model Working Group]]
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** [[Sources and Sinks Working Group]]
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** [[Transport Working Group]]
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</td>
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</tr>
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== Documentation ==
  
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=== GEOS-Chem manuals and tutorials ===
<!-- ===== GENERAL INFO : SECOND ROW                    ===== -->
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<!-- ======================================================== -->
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<!-- Header title -->
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The table below lists the various manual pages for GEOS-Chem and its related software packages.
<tr bgcolor="#cccccc">
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<th width="50%"scope="col"><big>Getting Started With GEOS-Chem</big></th>
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<th width="50%"scope="col"><big>General Technical Information</big></th>
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</tr>
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<tr>
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{| border=1 cellpadding=5 cellspacing=0
  
<!-- Getting Started With GEOS-Chem: Links -->
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|-valign="top"
<td width="50%" valign="top">
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!width="200px" bgcolor="#CCCCCC"|Item
* [[Frequently asked questions about GEOS-Chem]]
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!width="360px" bgcolor="#CCCCCC"|Link
* [[Minimum system requirements for GEOS-Chem]]
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!width="375px" bgcolor="#CCCCCC"|Description
* [[GEOS-Chem supported platforms and compilers]]
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* [[Downloading GEOS-Chem source code and data]]
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* [[GEOS-Chem programming resources]] (e.g. tutorials, user guides, etc.)
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* [http://acmg.seas.harvard.edu/geos/doc/man/appendix_7.html GEOS-Chem Programming Style Guide]
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</td>
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<!-- General Technical Information: Links -->
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|-valign="top"
<td width="50%" valign="top">
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|'''GEOS-Chem Classic'''
* [[Initial conditions for GEOS-Chem]]
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|[[Getting Started with GEOS-Chem]] (wiki page)
* [[GEOS-Chem Debugging Tips|Tips on how to debug GEOS-Chem effectively]]
+
*NOTE: Will be ported to geos-chem.readthedocs.io soon
* [[Reporting GEOS-Chem bugs]]
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|GEOS-Chem single-node implementation<br>(using 1-64 computational cores)
* [[Debugging with the GEOS-Chem unit tester]]
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* [[Parallelizing GEOS-Chem]] with the OpenMP directives
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* [[Common GEOS-Chem error messages]]
+
* [[Adding tracers to GEOS-Chem|Adding advected tracers and chemical species to GEOS-Chem]]
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* [[Adding Passive Tracers|Adding passive (CO-like) tracers to GEOS-Chem]]
+
</td>
+
  
</tr>
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|-valign="top"
</table>
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|'''GCHP'''
 +
|[https://gchp.readthedocs.io gchp.readthedocs.io]
 +
|GEOS-Chem multi-node "high performance" implementation<br>(using 100's - 1000's of computational cores)
  
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|-valign="top"
<!-- ===== CODE DEVELOPER'S FORUMS: TITLE              ===== -->
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|'''GEOS-Chem on the cloud'''
<!-- ======================================================== -->
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|[http://cloud.geos-chem.org cloud.geos-chem.org]
<p>&nbsp;</p>
+
|Instructions for running GEOS-Chem on the Amazon Web Services EC2 cloud-computing platform
<table width="100%" border="1" bordercolor="#000000" cellspacing="0" cellpadding="5" align="center">
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<tr bgcolor="#00AAAA">
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|-valign="top"
<th colspan="2" height="50" valign="middle"><p><font color="#FFFFFF" size="+2">GEOS&#150;Chem Code Developers' Forums</font></p></th>
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|'''WRF-GC'''
</tr>
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|[http://wrf.geos-chem.org wrf.geos-chem.org]
 +
|GEOS-Chem coupled to the WRF GCM
  
<!-- ======================================================== -->
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|-valign="top"
<!-- ===== CODE DEVELOPER'S FORUMS : FIRST ROW          ===== -->
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|'''HEMCO'''
<!-- ======================================================== -->
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|[https://hemco.readthedocs.io hemco.readthedocs.io]
<tr bgcolor="#cccccc">
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|The Harmonized Emissions Component
<th width="50%"scope="col"><big>Coding</big></th>
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<th width="50%"scope="col"><big>Diagnostics</big></th>
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</tr>
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<tr>
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|-valign="top"
 +
|'''GCPy'''
 +
|[https://gcpy.readthedocs.io gcpy.readthedocs.io]
 +
|The GEOS-Chem Python Toolkit
  
<!-- Coding: Links -->
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|-valign="top"
<td width="50%" valign="top">
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|'''KPP-for-GEOS-Chem'''
* [[GEOS-Chem versions under development]]
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|[https://kpp.readthedocs.io kpp.readthedocs.io]
* [[Bugs and fixes|List of GEOS-Chem bugs and in which version they were resolved]]
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|The Kinetic PreProcessor (KPP), customized for GEOS-Chem
* [[Currently unresolved issues in GEOS-Chem]]
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* [[Common GEOS-Chem error messages]]
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* [[GEOS-Chem performance]]
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* [[Machine issues & portability]]
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* [[Passing array arguments efficiently in GEOS-Chem]]
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* [[Floating point math issues]]
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* [[Version control with Git]]
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</td>
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<!-- Diagnostics: Links -->
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|-valign="top"
<td width="50%" valign="top">
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|'''GEOS-Chem Adjoint'''
* [http://acmg.seas.harvard.edu/geos/doc/man/appendix_5.html Overview of diagnostics characteristics]
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|[[GEOS-Chem Adjoint]] (wiki page)
* [[Diagnostic time step]]
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|The GEOS-Chem adjoint model<br> (NOTE: maintained separately from GEOS-Chem)
* [[Mass Flux (ND24/25/26)]]
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* [[Additional diagnostics]]
+
</td>
+
  
</tr>
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|-valign="top"
 +
|'''GEOS-Chem Videos'''
 +
|[https://youtube.com/c/geos-chem youtube.com/c/geos-chem]
 +
|Tutorial videos for GEOS-Chem, GCHP, HEMCO, GCPy, etc., and recordings of GEOS-Chem meeting sessions
  
<!-- ======================================================== -->
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|-valign="top"
<!-- ===== CODE DEVELOPER'S FORUMS : SECOND ROW        ===== -->
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|'''GEOS-Chem Guides'''
<!-- ======================================================== -->
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|[[GEOS-Chem overview#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.)
  
<!-- Header title -->
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|}
<tr bgcolor="#cccccc">
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<th width="50%"scope="col"><big>Emissions</big></th>
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<th width="50%"scope="col"><big>Chemistry</big></th>
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</tr>
+
  
<tr>
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=== General information about GEOS-Chem ===
  
<!-- Emissions: Links -->
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The table below lists where you can find general information about GEOS-Chem.
<td width="50%" valign="top">
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* [[HEMCO|HEMCO emissions component]]
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* [[HEMCO data directories]]
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* [[Aerosol emissions]]
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* [[Aircraft emissions]]
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* [[Anthropogenic emissions]]
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* [[Scale factors for anthropogenic emissions]]
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* [[Biofuel emissions]]
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* [[Biogenic emissions]]
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* [[Biomass burning emissions]]
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* [[Lightning NOx emissions]]
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* [[Ship emissions]]
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* [[Soil NOx emissions]]
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* [[Volcanic SO2 emissions from Aerocom|Volcanic emissions]]
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* [[Historical and Future Emissions|Historical and future emissions]]
+
</td>
+
  
<!-- Chemistry Links -->
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{| border=1 cellpadding=5 cellspacing=0
<td width="50%" valign="top">
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* [[GEOS-Chem chemistry mechanisms]]
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* [[GEOS-Chem chemistry mechanisms#Stratospheric chemistry|Stratopsheric chemistry options]]
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* [[GEOS-Chem chemistry mechanisms#Specialty simulations|Specialty simulations (aka "offline simulations")]]
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* Other resources
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** [[Chemistry Issues]]
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** [[Process Analysis Diagnostics]]
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** [[Photolysis mechanism|Photolysis mechanisms used in GEOS-Chem]]
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** [[DSMACC chemical box model]]
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** [[Isoprene|List of recent papers about isoprene]]
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** [[Linking GEOS-Chem to CMAQ]]
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** [[Coupling GEOS-Chem with RRTMG]]
+
</tr>
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<!-- ======================================================== -->
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|-valign="top"
<!-- ===== CODE DEVELOPER'S FORUMS : THIRD ROW        ===== -->
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!width="200px" bgcolor="#CCCCCC"|Item
<!-- ======================================================== -->
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!width="360px" bgcolor="#CCCCCC"|Link
 +
!width="365px" bgcolor="#CCCCCC"|Description
  
<!-- Header title -->
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|-valign="top"
<tr bgcolor="#cccccc">
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|'''GEOS-Chem website'''
<th width="50%"scope="col"><big>Dynamics</big></th>
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|[http://www.geos-chem.org geos-chem.org]
<th width="50%"scope="col"><big>Deposition</big></th>
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|Website that links to GEOS-Chem information and resources
</tr>
+
  
<tr>
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|-valign="top"
 +
|'''Welcome Letter'''
 +
|[[GEOS-Chem welcome letter for new users]] (wiki page)
 +
|A welcome letter for new users of GEOS-Chem
  
<!-- Dynamics: Links -->
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|-valign="top"
<td width="50%" valign="top">
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|'''GEOS-Chem Overview'''
* [[Advection scheme TPCORE]]
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|[[GEOS-Chem overview]] (wiki page)
* [[Boundary layer mixing]]
+
|A page with linking to many GEOS-Chem topics.
* [[Cloud convection]]
+
* [[Dynamic tropopause]]
+
</td>
+
  
<!-- Deposition: Links -->
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|-valign="top"
<td width="50%" valign="top">
+
|'''GEOS-Chem Narrative'''
* [[Dry deposition]]
+
|[http://geos-chem.org/geos_chem_narrative.html geos-chem.org/geos_chem_narrative.html]
**[[Leaf area indices in GEOS-Chem]]
+
|A narrative descrption of GEOS-Chem that you can include in scientific papers (plus instructions for citing GEOS-Chem)
* [[Wet deposition]]
+
</td>
+
  
</tr>
+
|-valign="top"
 +
|'''GEOS-Chem New Developments'''
 +
|[http://geos-chem.org/geos_new_developments.html geos-chem.org/geos_new_developments.html]
 +
|A list of significant GEOS-Chem updates and the developers who worked on them
  
<!-- ======================================================== -->
+
|-valign="top"
<!-- ===== CODE DEVELOPER'S FORUMS : FOURTH ROW        ===== -->
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|'''GEOS-Chem Steering Committee (GCSC)'''
<!-- ======================================================== -->
+
|[http://www.geos-chem.org/geos_steering_cmte.html geos-chem.org/geos_steering_cmte.html]
 +
|A listing of current GCSC members and minutes from GCSC meetings
  
<!-- Header title -->
+
|-valign="top"
<tr bgcolor="#cccccc">
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|'''GEOS-Chem Working Groups'''
<th width="50%"scope="col"><big>Aerosols</big></th>
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|[http://www.geos-chem.org/geos_working_groups.html geos-chem.org/geos_working_groups.html]
<th width="50%"scope="col"><big>Met Fields</big></th>
+
|A listing of GEOS-Chem Working Groups and Working Group Co-Chairs
</tr>
+
  
<tr>
+
|-valign="top"
 +
|'''GEOS-Chem Versions'''
 +
|[[GEOS-Chem versions]] (wiki page)
 +
|A listing of GEOS-Chem versions (with links for more information)
  
<!-- Aerosols: Links -->
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|-valign="top"
<td width="50%" valign="top">
+
|'''GEOS-Chem Species List'''
* [[Aerosols overview: projects and developments|Aerosols working group]]
+
|[[Guide to species in GEOS-Chem]] (wiki page)
* [[Aerosol-only simulation]]
+
|A listing of the species used in the GEOS-Chem chemistry mechanisms
* [[Aerosol optical properties]]
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* [[Aerosol thermodynamical equilibrium]]
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* [[Carbonaceous aerosols]]
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* [[Mineral dust aerosols]]
+
* [[Secondary organic aerosols]]
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* [[Sea salt aerosols]]
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* [[Sulfate aerosols]]
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* Aerosol Microphysics
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** [[APM aerosol microphysics|APM]]
+
** [[TOMAS aerosol microphysics|TOMAS]]
+
</td>
+
  
<!-- Met Fields: Links -->
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|-valign="top"
<td width="50%" valign="top">
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|'''Requesting Support'''
* [[GCAP]]
+
|[[Submitting GEOS-Chem support requests]] (wiki page)
** [[List of GCAP met fields|List of GCAP met fields used by GEOS-Chem]]
+
|Instructions for creating GEOS-Chem support requests using the Github issue trackers
* [[Overview of GMAO met data products]]
+
* [[GMAO GEOS-4]]
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** [[List of GEOS-4 met fields|List of GEOS-4 met fields used by GEOS-Chem]]
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* [[GEOS-5|GMAO GEOS-5.2.0]]
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** [[List of GEOS-5 met fields|List of GEOS-5.2.0 met fields used by GEOS-Chem]]
+
** [[GEOS-5 issues|Issues with GEOS-5.2.0 met data]]
+
* [[MERRA|GMAO MERRA "reanalysis"]]
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** [[List of MERRA met fields|List of MERRA met fields used by GEOS-Chem]]
+
** [[MERRA implementation details|Implementing MERRA into GEOS-Chem]]
+
* [[GEOS-FP|GMAO GEOS-FP]]
+
** [[List of GEOS-FP met fields|List of GEOS-FP met fields used by GEOS-Chem]]
+
** [[GEOS-FP implementation details|Implementing GEOS-FP into GEOS-Chem]]
+
* [http://acmg.seas.harvard.edu/geos/doc/man/appendix_4.html GEOS-Chem Met Fields (from website)]
+
** [[Notes regarding GEOS vertical grids]]
+
</td>
+
  
</tr>
+
|-valign="top"
 +
|'''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.
  
<!-- ======================================================== -->
+
|}
<!-- ===== CODE DEVELOPER'S FORUMS : FIFTH ROW          ===== -->
+
<!-- ======================================================== -->
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<tr bgcolor="#cccccc">
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<th width="50%"scope="col"><big>Nested Grid Simulations</big></th>
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<th width="50%"scope="col"><big>Earth System Model Framework</big></th>
+
</tr>
+
 
+
<tr>
+
 
+
<!-- Nested Grid Simulations: Links -->
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<td width="50%" valign="top">
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* [[GEOS-Chem nested grid simulations]]
+
* [[Setting up GEOS-Chem nested grid simulations]]
+
* [[Available met data for nested grid simulations]]
+
* [http://acmg.seas.harvard.edu/geos/wiki_docs/nested_grids/geos_data_downloads.pdf Protocol for nested-grid data downloads]
+
</td>
+
 
+
<!-- Libraries -->
+
<td width="50%" valign="top">
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* [[Installing ESMF and other required libraries]]
+
* [[Code development with the Earth System Model Framework]]
+
* [[Automatic documentation with protex|Generating automatic LaTeX documentation with protex]]
+
** [http://frodo.elon.edu/tutorial/tutorial/tutorial.html Web-based LaTeX tutorial]
+
</td>
+
 
+
</tr>
+
 
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<!-- ======================================================== -->
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<!-- ===== CODE DEVELOPER'S FORUMS : SIXTH ROW          ===== -->
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<tr bgcolor="#cccccc">
+
<th width="50%"scope="col"><big>Benchmarking and Evaluation</big></th>
+
<th width="50%"scope="col"><big>Related Projects</big></th>
+
</tr>
+
 
+
<tr>
+
 
+
<!-- Diagnostics: Links -->
+
<td width="50%" valign="top">
+
* [http://acmg.seas.harvard.edu/geos/geos_benchmark.html General info about GEOS-Chem benchmark simulations]
+
* [http://acmg.seas.harvard.edu/geos/geos_1yr_plots.html List of GEOS-Chem 1-year benchmark simulations]
+
* [[Mean OH lifetime in GEOS-Chem]]
+
* [ftp://ftp.as.harvard.edu/gcgrid/geos-chem/1yr_benchmarks/ FTP site with output from 1-year GEOS-Chem benchmark simulations]
+
* [[GEOS-Chem participation in community intercomparisons]]
+
* [[Satellite_Specifications_Table|Satellite Instrument Specifications Table]]
+
</td>
+
 
+
<!-- Related Projects: Links -->
+
<td width="50%" valign="top">
+
* [[Grid-independent GEOS-Chem]]
+
* [[GEOS-Chem Adjoint]]
+
* [[GEOS-Chem Near-Real-Time Simulations]]
+
* [[FlexAOD]]
+
</td>
+
 
+
</tr>
+
</table>
+
 
+
<!-- ======================================================== -->
+
<!-- ===== REFERENCE: TITLE                            ===== -->
+
<!-- ======================================================== -->
+
<p>&nbsp;</p>
+
<table width="100%" border="1" bordercolor="#000000" cellspacing="0" cellpadding="5" align="center">
+
 
+
<tr bgcolor="#00AAAA">
+
<th colspan="2" height="50" valign="middle"><p><font color="#FFFFFF" size="+2">Reference Section</font></p></th>
+
</tr>
+
 
+
<!-- ======================================================== -->
+
<!-- ===== REFERENCE: FIRST ROW                        ===== -->
+
<!-- ======================================================== -->
+
<tr bgcolor="#cccccc">
+
<th width="50%"scope="col"><big>IDL</big></th>
+
<th width="50%"scope="col"><big>GAMAP</big></th>
+
</tr>
+
 
+
<tr>
+
 
+
<!-- IDL: Links -->
+
<td width="50%" valign="top">
+
* [http://www.exelisvis.com/ Exelis Visual Information Solutions (vendor)]
+
* [http://www.exelisvis.com/docs/routines-1.html Online IDL Reference Manual @ Exelis website]
+
* [http://idlastro.gsfc.nasa.gov/idl_html_help/Structures.html Structures in IDL]
+
* [http://idlastro.gsfc.nasa.gov/idl_html_help/Pointers.html Pointers in IDL]
+
* [http://idlastro.gsfc.nasa.gov/idl_html_help/Overview_of_Mathematics_in_IDL.html Overview of Mathematics in IDL]
+
* [http://www.dfanning.com/ Coyote's Guide to IDL Programming (David Fanning's Web Site)] - Lots of tips on how to accomplish programming tasks
+
* [http://www.mpimet.mpg.de/en/misc/software/idl IDL Page at Max Planck Institute for Meteorology]
+
* [http://www.mpimet.mpg.de/en/misc/software/idl/doc/mgs_script.pdf Martin Schultz's IDL Tutorial (PDF Format)]
+
* [http://idlastro.gsfc.nasa.gov/homepage.html IDL Astronomy User's Library]
+
* [http://fermi.jhuapl.edu/s1r/idl/idl.html JHU/APL/S1R IDL routines page]
+
* [http://cow.physics.wisc.edu/~craigm/idl/idl.html Craig Markwardt's IDL library]
+
* [http://cimss.ssec.wisc.edu/~gumley/doc/idltips.pdf The Underground Guide to IDL by Liam Gumley (PDF)]
+
* [[Reading binary files in IDL]]
+
</td>
+
 
+
<!-- Diagnostics: Links -->
+
<td width="50%" valign="top">
+
* [http://acmg.seas.harvard.edu/gamap/ GAMAP web page]
+
* [http://acmg.seas.harvard.edu/gamap/doc/ GAMAP on-line users' guide]
+
* [[GAMAP bugs and fixes]]
+
* [[GAMAP tips and tricks]]
+
**[[General GAMAP usage]]
+
**[[TVMAP cheat sheet]]
+
**[[File I/O with GAMAP]]
+
***[http://acmg.seas.harvard.edu/gamap/doc/timeseries_brief_tutorial.pdf Working with timeseries output in GAMAP]
+
**[[Color and graphics with GAMAP]]
+
*** [http://acmg.seas.harvard.edu/geos/wiki_docs/gamap/gamap_color_table_file.pdf Loading Color Tables in GAMAP v2.12]
+
*** [http://acmg.seas.harvard.edu/forum_files/cdh_ColorInIDL.pdf Working with color in IDL by Chris Holmes]
+
**[[Regridding with GAMAP]]
+
**[[Date and time computations with GAMAP]]
+
**[[Text manipulation with GAMAP]]
+
</td>
+
 
+
</tr>
+
 
+
<!-- ======================================================== -->
+
<!-- ===== REFERENCE: SECOND ROW                        ===== -->
+
<!-- ======================================================== -->
+
 
+
<!-- Header title -->
+
<tr bgcolor="#cccccc">
+
<th width="50%"scope="col"><big>Fortran</big></th>
+
<th width="50%"scope="col"><big>Perl</big></th>
+
</tr>
+
 
+
<tr>
+
 
+
<!-- Fortran: Links -->
+
<td width="50%" valign="top">
+
* Intel Fortran Compiler
+
** [http://acmg.seas.harvard.edu/geos/wiki_docs/compilers/main_for_lin_v11.pdf Version 11.1]
+
** [http://acmg.seas.harvard.edu/geos/wiki_docs/compilers/main_for_lin_v12.pdf Version 12.1]
+
** [https://nf.nci.org.au/facilities/software/intel-ct/13.2.146/Documentation/en_US/compiler_f/main_for/index.htm#GUID-81DC012F-20D6-46B1-A524-BFAC4B6F7747.htm#GUID-81DC012F-20D6-46B1-A524-BFAC4B6F7747 Version XE 13.1]
+
* [http://www.pgroup.com/products/ PGI Fortran]
+
* [http://www-01.ibm.com/software/awdtools/fortran/xlfortran/ IBM XL Fortran]
+
* [http://docs.sun.com/app/docs/doc/819-3686 Sun Studio 11 Fortran Compiler]
+
* [http://www.liv.ac.uk/HPC/HTMLF90Course/HTMLF90CourseSlides.html Modular Programming w/ Fortran 90 (U. Liverpool)]
+
* [http://www.liv.ac.uk/HPC/F90page.html Other University of Liverpool F90 tutorials and courses]
+
* [http://sunsite.unc.edu/pub/languages/fortran/index.html User Notes on FORTRAN Programming]
+
* [http://www.nsc.liu.se/~boein/f77to90/f77to90.html Fortran 90 for the FORTRAN 77 Programmer]
+
* [http://www.kcl.ac.uk/kis/support/cc/fortran/f90home.html#1.0 Fortran 90 Home Page at King's College, London]
+
* [http://www.cs.rpi.edu/~szymansk/oof90.html Object Oriented Fortran 90 Programming]
+
</td>
+
 
+
<!-- Perl: Links  -->
+
<td width="50%" valign="top">
+
* [http://www.perl.com Perl.com]
+
* [http://www.perl.org/books/beginning-perl/ ''Beginning Perl'' by Simon Cozens (free online book)]
+
* [http://backpan.perl.org/authors/id/Q/QU/QUONG/perlin20.html Perl in 20 pages]
+
* [http://www.enginsite.com/Library-Robert%27s-Perl-Tutorial.htm MediaWiki User's Guide]
+
* [http://www.cpan.org/ Comprehensive Perl Archive Network (CPAN.org)]
+
</td>
+
 
+
</tr>
+
 
+
<!-- Header title -->
+
<tr bgcolor="#cccccc">
+
<th width="50%"scope="col"><big>R</big></th>
+
<th width="50%"scope="col"><big>Python</big></th>
+
</tr>
+
 
+
<tr>
+
 
+
<!-- R: links -->
+
<td width="50%" valign="top">
+
*[http://www.r-project.org/ The R project for statistical computing]
+
*[http://journal.r-project.org/ The R journal]
+
*[http://www.mayin.org/ajayshah/KB/R/index.html R by example]
+
*[[Using R to analyze GEOS-Chem data]]
+
</td>
+
 
+
<!-- Python: links -->
+
<td width="50%" valign="top">
+
*[[Python code for GEOS-Chem]]
+
*[http://www.python.org Python.org]: Main site for all things Python
+
*[http://docs.python.org/2/tutorial/ Python.org Tutorial]
+
*[http://wiki.python.org/moin/BeginnersGuide/Programmers PythonWiki.org: List of tutorials and resources]
+
*[https://developers.google.com/edu/python/ Google's Python tutorial]
+
</td>
+
 
+
</tr>
+
 
+
<!-- Header title -->
+
<tr bgcolor="#cccccc">
+
<th width="50%"scope="col"><big>NCAR Command Language (NCL)</big></th>
+
<th width="50%"scope="col"><big>Wiki Documentation</big></th>
+
</tr>
+
 
+
<tr>
+
 
+
<!-- Wiki Documentation: Links -->
+
<td width="50%" valign="top">
+
* [http://www.ncl.ucar.edu/ NCL main page]
+
* [http://www.ncl.ucar.edu/Applications/ NCL applications]
+
* [http://www.ncl.ucar.edu/Document/ NCL documentation]
+
* [http://www.ncl.ucar.edu/Support/email_lists.shtml Sign up for NCL-Talk email list]
+
* [[NCL_tools_for_GEOS-Chem|NCL4GC: NCL tools for GEOS-Chem]]
+
</td>
+
<td width="50%" valign="top">
+
* [[Sandbox]]
+
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
+
* [http://meta.wikimedia.org/wiki/Help:Contents MediaWiki User's Guide]
+
* [http://meta.wikimedia.org/wiki/Help:Wikitext Examples of Wiki markup text]
+
* [http://meta.wikimedia.org/wiki/Help:Reference_card One-page editing reference card]
+
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration Settings list]
+
* [http://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
+
</td>
+
 
+
<td>
+
</td>
+
 
+
</tr>
+
 
+
</table>
+

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.