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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 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.
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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!
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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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<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>
  
=== Introduction and Overview ===
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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.]
* [[Features of the GEOS-Chem public wiki]]
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* [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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* [[GEOS-Chem newsletters]]
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=== Getting Started with GEOS-Chem ===
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* [[Minimum system requirements for GEOS-Chem]]
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* [[GEOS-Chem supported platforms and compilers]]
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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/ctm/geos/doc/man/appendix_7.html GEOS-Chem Programming Style Guide]
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* [[Running GEOS-Chem with TESTRUN]]
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=== General Technical Information ===
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* [[Initial conditions for GEOS-Chem]]
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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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=== GEOS-Chem Working Groups ===
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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 12#12.8.2|'''Current release: GEOS-Chem 12.8.2''']]</font>'''''
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|width="225px" align="center"|<font size="+2">[[GEOS-Chem model development_priorities|Future releases]]</font>
  
The current GEOS-Chem Working Groups are listed below.  All users should feel free to join the Working Group that is most relevant to their research (contact the working group co-chairs for more information).  The GEOS-Chem Working Groups are responsible for identifying and coordinating model development priorities in their particular area of responsibility.
 
 
The GEOS-Chem Steering Committee is composed of the Working Group Co-Chairs and Model Scientist Daniel Jacob.  The Steering Committee will meet periodically to set overall priorities for continuing GEOS-Chem model development.
 
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
!Working Group
 
!Co-Chairs
 
!Email list
 
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|[[GEOS-Chem Adjoint|Adjoint]]
 
|Kevin Bowman (Kevin.Bowman@jpl.nasa.gov)<br>Daven Henze (daven.henze@colorado.edu)
 
|geos-chem-adjoint@seas.harvard.edu
 
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|[[Aerosols overview: projects and developments|Aerosol processes]]
 
|Colette Heald (heald@atmos.colostate.edu)<br>Fangqun Yu (yfq@asrc.cestm.albany.edu)
 
|geos-chem-aerosols@seas.harvard.edu
 
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|[[Carbon gases]]
 
|Dylan Jones (dbj@atmosp.physics.toronto.edu)<br>Prasad Kasibhatla (psk9@duke.edu)
 
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|[[Emissions]]
 
|Jennifer Logan (jlogan@seas.harvard.edu)<br>Randall Martin (randall.martin@dal.ca)
 
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|[[Chemistry-climate interactions]]
 
|Becky Alexander (beckya@u.washington.edu)<br>Loretta Mickley (mickley@fas.harvard.edu)
 
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|[[Chemistry Issues|Oxidants and chemistry]]
 
|Mat Evans (M.J.Evans@leeds.ac.uk)<br>May Fu (cetmfu@polyu.edu.hk)
 
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|[[Regional modeling]]
 
|Rokjin Park (rjpark@snu.ac.kr)<br>Yuxuan Wang (yxw@mail.tsinghua.edu.cn)
 
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|}
 
|}
  
== Code Developers' Forums ==
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== News ==
 
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*'''30 May 2020''' Read the [[Media:GEOS-Chem_Newsletter_Spring_2020.pdf|GEOS-Chem Newsletter, Spring 2020 Edition]]!
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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*'''27 May 2020:''' [[GEOS-Chem_12#12.8.2|GEOS-Chem 12.8.2]] is now available!
 
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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>!
=== Coding ===
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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]!
* [[GEOS-Chem versions under development]]
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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!
* [[Machine issues & portability]]
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*'''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]].
* [[Floating point math issues]]
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* [[Bugs and fixes]]
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* [[Previous issues that are now resolved...]]
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** [[Previous issues now resolved in v8-01-01|in GEOS-Chem v8-01-01]]
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** [[Previous issues now resolved in v8-01-02|in GEOS-Chem v8-01-02]]  
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** [[Previous issues now resolved in v8-01-03|in GEOS-Chem v8-01-03]]
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* [[Outstanding issues yet to be resolved]]
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=== Diagnostics ===
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* [http://www-as.harvard.edu/chemistry/trop/geos/doc/man/appendix_5.html Overview of diagnostics characteristics]
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* [[Mass Flux (ND24/25/26)]]
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* [[Additional diagnostics]]
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=== Emissions ===
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* [[Overview]]
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* [[Aircraft emissions]]
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* [[Anthropogenic emissions]]
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** [http://www.as.harvard.edu/ctm/geos/word_pdf_docs/INVENTORY_GC_public.pdf Table of available anthropogenic emissions inventories for use w/ GEOS-Chem]
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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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=== Chemistry ===
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* [[Chemistry Issues]]
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* [[NOx-Ox-HC-aerosol|NOx-Ox-hydrocarbon-aerosol (aka "full-chemistry") simulation]]
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* [[Photolysis mechanism]]
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* [[Mercury|Mercury simulation]]
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* [[Tagged CO simulation]]
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=== Aerosols ===
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* [[Aerosols overview: projects and developments]]
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* [[Aerosol thermodynamical equilibrium]]
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* [[Secondary organic aerosols]]
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* [[Sea salt aerosols]]
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* [[Sulfate aerosols]]
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=== Met Fields ===
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* [[GCAP]]
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* GMAO GEOS-5
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** [[List of GEOS-5 met fields]]
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** [[GEOS-5 issues]]
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** [[GEOS-5 met field reprocessing]]
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* [http://www.as.harvard.edu/ctm/geos/doc/man/appendix_4.html GEOS-Chem Met Fields (from website)]
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=== Earth System Model Framework ===
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* [[Installing ESMF and other required libraries]]
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* [[Code development with the Earth System Model Framework]]
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* [[Automatic documentation with protex|Generating automatic LaTeX documentation with protex]]
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** [http://frodo.elon.edu/tutorial/tutorial/tutorial.html Web-based LaTeX tutorial]
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=== Related Projects ===
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* [[GEOS-Chem Adjoint]]
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* [[GEOS-Chem nested grid simulations]]
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* [[GEOS-Chem Near-Real-Time Simulations]]
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== Data Visualization and Analysis ==
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For access to all past GEOS-Chem newsletters, visit [[GEOS-Chem newsletters|this page]].
  
=== IDL ===
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== Documentation ==
* [http://www.ittvis.com/ ITT Visualization (vendor)]
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* [http://idlastro.gsfc.nasa.gov/idl_html_help/Structures.html Structures in IDL]
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* [http://idlastro.gsfc.nasa.gov/idl_html_help/Pointers.html Pointers in IDL]
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* [http://idlastro.gsfc.nasa.gov/idl_html_help/Overview_of_Mathematics_in_IDL.html Overview of Mathematics in IDL]
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* [http://www.dfanning.com/ Coyote's Guide to IDL Programming (David Fanning's Web Site)] - Lots of tips on how to accomplish programming tasks
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* [http://www.mpimet.mpg.de/en/misc/software/idl IDL Page at Max Planck Institute for Meteorology]
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* [http://www.mpimet.mpg.de/en/misc/software/idl/doc/mgs_script.pdf Martin Schultz's IDL Tutorial (PDF Format)]
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* [http://idlastro.gsfc.nasa.gov/homepage.html IDL Astronomy User's Library]
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* [http://fermi.jhuapl.edu/s1r/idl/idl.html JHU/APL/S1R IDL routines page]
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* [http://cow.physics.wisc.edu/~craigm/idl/idl.html Craig Markwardt's IDL library]
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* [http://cimss.ssec.wisc.edu/~gumley/doc/idltips.pdf The Underground Guide to IDL by Liam Gumley (PDF)]
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* [[Reading binary files in IDL]]
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=== GAMAP ===
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*[[GEOS-Chem welcome letter for new users]]
* [http://www.as.harvard.edu/ctm/gamap/ GAMAP web page]
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*[[GEOS-Chem overview]]
* [http://www.as.harvard.edu/ctm/gamap/doc/ GAMAP on-line users' guide]
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*[[GEOS-Chem basics]]
* [[GAMAP bugs and fixes]]
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*[[Getting Started with GEOS-Chem]]
* [[GAMAP tips and tricks]]
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*[[Getting Started with GCHP]]
**[[General GAMAP usage]]
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*[http://cloud.geos-chem.org Running GEOS-Chem on AWS cloud ('''''cloud.geos-chem.org''''')]
**[[File I/O with GAMAP]]
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*[[GEOS-Chem overview#GEOS-Chem Guides|GEOS-Chem Guides]]
***[http://www-as.harvard.edu/chemistry/trop/gamap/doc/timeseries_brief_tutorial.pdf Working with timeseries output in GAMAP]
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*[[GEOS-Chem_Benchmarks|GEOS-Chem Benchmarks]]
**[[Color and graphics with GAMAP]]
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*[[Guide to species in GEOS-Chem|GEOS-Chem species]]
*** [http://www.as.harvard.edu/ctm/geos/wiki_docs/gamap/gamap_color_table_file.pdf Loading Color Tables in GAMAP v2.12]
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*** [http://www.as.harvard.edu/chemistry/trop/forum_files/cdh_ColorInIDL.pdf Working with color in IDL by Chris Holmes]
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**[[Regridding with GAMAP]]
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**[[Date and time computations with GAMAP]]
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**[[Text manipulation with GAMAP]]
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== Wiki Documentation ==
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== Featured links ==
* [[Sandbox]]
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*[[Submitting GEOS-Chem support requests]]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
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*[[Bugs_and_fixes#Bugs_and_fixes_lists_have_now_been_migrated_to_Github|List of GEOS-Chem bugs and fixes by version]] (as posted on  [https://github.com/geoschem/geos-chem/issues/ our Github issue tracker])
* [http://meta.wikimedia.org/wiki/Help:Contents MediaWiki User's Guide]
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*[[Submitting updates for inclusion in GEOS-Chem]]
* [http://meta.wikimedia.org/wiki/Help:Wikitext Examples of Wiki markup text]
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*[[GEOS-Chem HP|GCHP Main Page]]
* [http://meta.wikimedia.org/wiki/Help:Reference_card One-page editing reference card]
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*[[GEOS-Chem Adjoint]]
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration Settings list]
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*[http://wrf.geos-chem.org GEOS-Chem coupled with WRF ('''''wrf.geos-chem.org''''')]
* [http://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
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*[http://youtube.com/c/geoschem GEOS-Chem YouTube Channel ('''''youtube.com/c/geoschem''''')&mdash;contains tutorial videos]

Revision as of 13:49, 1 June 2020

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.

Past releases Current release: GEOS-Chem 12.8.2 Future releases

News

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

Documentation

Featured links