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• Benchmark/GEOS-Chem 12.3.0
  This is the first GEOS-Chem benchmark to utilize [https://github.com/geoschem/gcpy ...h had a particularly active June. For example, 2009 June SO2 eruption mass is 4 times the average of the 2000-2009 June. The cycling option takes 2009 an
  21 KB (3,084 words) - 18:27, 4 June 2019
• Using patches to share your updates with others
  One of the really nice features of Git is that it can create '''patch files''', or files which contain a list of chan The other way to share your code updates with others is to create a pull request from your local Github account. This will be desc
  9 KB (1,505 words) - 20:29, 5 August 2019
• GEOS-Chem 13.2.0
  ...parison/. The impact on total emissions from CEDS in the 1-month benchmark is: ...genic emissions. The impact on biogenic emissions from the MEGAN extension is:
  605 KB (76,005 words) - 18:49, 3 January 2023
• EMEP European anthropogenic emissions
  ...s based on their latest estimates, which run until 2012, if the old format is still useful post-HEMCO. ...MCO to more accurately regrid onto a variety of GEOS-Chem grids. This file is read with the [[HEMCO|HEMCO emissions component]] and will be validated wit
  9 KB (1,381 words) - 20:43, 16 September 2022
• RCP future emissions scenarios
  ...e linearly between two consecutive time steps. The interpolation frequency is determined by the update frequency provided in the HEMCO configuration file ...nters 2014, the data is updated to 0.6 * DATA_2010 + 0.4 * DATA_2020. This is the default setting.</blockquote>
  6 KB (916 words) - 21:26, 13 July 2023
• GEOS-Chem 14.1.0
  '''''This version is currently in development''''' *[https://github.com/KineticPreProcessor/KPP/releases/tag/3.0.0 KPP 3.0.0 is now released]
  83 KB (10,993 words) - 20:48, 14 May 2024
• GEOS-Chem v8-01-03
  ...ctm.bpch</tt> and <tt>ts_satellite.bpch</tt>. In fact for ND51, a variable is declared with a wrong type. So in <tt>diag51_mod.f</tt> you need to replace ...Bob Yantosca have implemented a fix into <tt>diag3.f</tt> such that there is now a test for the name of each tracer. As a side-effect of this fix, you
  8 KB (1,244 words) - 17:38, 15 November 2017
• GEOS-Chem to CMAQv5.0
  ...CMAQ, please use Barron Henderson's program <tt>pncglobal2cmaq</tt>, which is described on our [[Linking GEOS-Chem to CMAQ]] wiki page.'''''</span> The objective of this information is to facilitate use of CMAQ. Although this work was reviewed by EPA and appro
  7 KB (1,019 words) - 13:58, 19 June 2019
• Installing Git
  == First, check if Git is already installed == To check if it is already installed, you can ask for the version at the Unix prompt. Type:
  3 KB (406 words) - 20:20, 5 August 2019
• Receiving updates (aka pulling)
  When a new GEOS-Chem version is released, we recommend that you [[#Downloading a new GEOS-Chem version|down In this example, the '''master''' branch is checked out, which corresponds to GEOS-Chem version 12.3.2.
  7 KB (957 words) - 20:29, 5 August 2019
• GEOS-Chem 13.3.0
  ...nternalBenchmarks/GCC_13.3.0-alpha.3/Tables/OH_metrics.txt Global mean OH] is reduced by -1.49%. Complete results from a 1-month benchmark evaluating the ...expected because the function in which this bug occurs (<tt>CloudHet</tt>) is used in the rate computations of many heterogeneous reactions. See [https:
  150 KB (19,810 words) - 18:18, 19 February 2022
• GEOS-Chem 14.3.0
  '''''This version is the current stable version of GEOS-Chem''''' *Fast-JX is still available as a build option and remains the default for the Hg simula
  300 KB (39,414 words) - 20:48, 14 May 2024
• TransportTracers simulation
  ::Where &Delta;T is the emission timestep in seconds. *Emitted globally at the surface such that the mixing ratio is maintained at 100 ppbv
  7 KB (1,063 words) - 16:08, 21 May 2024
• Main Page
  ...ospheric composition problems. Central management and support of the model is provided by the [https://acmg.seas.harvard.edu/ Atmospheric Chemistry Model *31 May 2024: [[GEOS-Chem 14.4.0]] is now available!
  6 KB (756 words) - 15:59, 24 June 2024
• Scalability
  A good measure of how well your job scales across multiple CPUs is the <span style="color:blue">ratio of CPU time to wall-clock time</span>. ...Us would have a CPU time / wall time ratio of exactly 8. This in practice is never attained due to file I/O as well as system overhead. By dividing the
  8 KB (1,058 words) - 20:44, 21 December 2015
• Cloud convection
  ...SS GCM allows for condensed water in the atmosphere (i.e., condensed water is not immediately precipitated), resulting in frequent nonprecipitating shall ...to both the Relaxed Arakawa and Hack/Zhang-McFarlane schemes in GEOS-Chem) is described in Section 1 of [http://acmg.seas.harvard.edu/geos/wiki_docs/depo
  4 KB (662 words) - 20:46, 13 July 2023
• Mean OH concentration
  ...ation in GEOS-Chem. This value is an indicator of how "hot" the chemistry is. Please also see the related topic about the [[Methyl chloroform lifetime| ...mark simulations. The mean OH is an indicator how the chemistry mechanism is performing. Typical values are 10–12 x 10⁵ molecules cm<sup>-1
  710 B (108 words) - 14:54, 18 October 2023
• Bugs and fixes in GEOS-Chem v9, v10, and v11
  ...error trap in to avoid a segmentation fault when the DustGinoux extension is turned off]] ...ons_when_GFED_is_turned_off|(v11-02f) Fix bug in biomass burning when GFED is turned off]]
  33 KB (5,225 words) - 20:46, 2 January 2019
• Cloning (i.e. downloading for the first time)
  The GEOS-Chem source code repository is available for remote download via Git, from our Github repository: ...n your disk into which the GEOS-Chem source code files will be placed. It is up to you to pick <tt>LOCAL-CODE_FOLDER</tt>.
  4 KB (544 words) - 20:26, 5 August 2019
• Using Git GUI
  #'''Unstaged Changes''' (@ top-left): An unstaged change is a modification that Git does not know about yet. If you modified any files This menu is pretty self-explanatory. You can choose to:
  3 KB (507 words) - 20:27, 5 August 2019