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• MERRA-2 implementation details
  ==== Modifications for the full-chemistry simulations ==== ...try simulations"]] (i.e. those using the benchmark, UCX, SOA, and tropchem chemistry mechanisms) use emissions (e.g. lightning, dust) that have scale factors th
  25 KB (3,861 words) - 18:49, 28 May 2020
• Mineral dust aerosols
  ...collection|described HERE]]) are required for photolysis and heterogeneous chemistry. The 7 MDUST types also have distinct optical properties in the FAST-JX in === Surface chemistry on dust ===
  50 KB (7,218 words) - 16:41, 16 November 2020
• Setting up GEOS-Chem nested grid simulations
  ...ple, saving boundary condition output from a 4° x 5° standard full chemistry simulation will take much less time than from a 2° x 2.5° simulatio ...on output. These specialty simulations run much faster than then the full-chemistry simulations, and carry less species, thus resulting in more manageable file
  32 KB (4,575 words) - 19:09, 17 August 2021
• Bromine chemistry mechanism
  ...hem v11-02d]] as part of the updated [[Halogen_chemistry_mechanism|halogen chemistry mechanism]]. ...rella added bromine chemistry as an extension to the standard model's full chemistry simulation in [[GEOS-Chem v8-03-01]]. We have now brought Justin's updates
  12 KB (2,004 words) - 09:35, 19 April 2018
• Dry deposition
  ...globchem.dat with " MVK=DRYDEP+DRYMVK", because drydep here is done out of chemistry step. But you need to modify that for full mixing scheme, which is using c :Jaeglé, L., Shah, V.,et al., ''Nitrogen oxides emissions, chemistry, deposition, and export over the Northeast United States during the WINTER
  40 KB (5,780 words) - 14:58, 18 October 2019
• GEOS-Chem Newsletter January-February 2011
  ...GEOS-Chem processed emissions from ship exhaust. We have corrected these issues in v9-01-01. For more information, please see: We fixed several other minor issues in GEOS-Chem v9-01-01. For a complete list, please see [[GEOS-Chem_v9-01-0
  20 KB (3,183 words) - 14:05, 19 June 2019
• GEOS-Chem v8-02-04
  #[[Linoz stratospheric ozone chemistry|LINOZ stratospheric ozone chemistry]] ''(Dylan Jones group @ U. Toronto)'' ...w linoz code from v8-02-04 and used it in v8-02-01. I ran two GEOS-5 full chemistry simulations for 2007 and the output were consistent over the full year.
  33 KB (4,899 words) - 17:46, 15 November 2017
• MEGAN v2.1 plus Guenther 2012 biogenic emissions
  ...arameters included for a number of compounds not presently in the standard chemistry scheme - for use in specialized simulations and/or future inclusion in sta ...are small (< 2ppb for P > 800hPa) using the standard v9-1-3 (non-Caltech) chemistry scheme.</blockquote>
  33 KB (4,994 words) - 16:44, 15 October 2019
• GEOS-Chem v8-01-01
  # Compatibility for [[GEOS-5 issues|GEOS-5]] met fields. # Implements [[Floating point math issues|floating point error traps]] (e.g. to prevent division by zero) in a few cr
  13 KB (1,925 words) - 18:05, 20 June 2017
• APM aerosol microphysics
  ...ticles (through condensation, coagulation, equilibrium uptake, and aqueous chemistry) are tracked. ...cs (nucleation, condensation, coagulation, deposition, and scavenging) and chemistry, it takes the model (127 tracers) 52.35 hours for the same year simulations
  29 KB (4,467 words) - 18:28, 1 November 2021
• GEOS-Chem Newsletter February 2010
  # [[Linoz stratospheric ozone chemistry]] # [[Machine issues & portability]]
  11 KB (1,688 words) - 15:20, 19 June 2019
• GEOS-Chem Newsletter May 2010
  # [[New isoprene scheme|Option to use Caltech isoprene chemistry]] ''(F. Paulot)'' ...h isoprene scheme]] should not be used, as there are still some unresolved issues to be worked out. We will let you know when it is ready.
  11 KB (1,703 words) - 15:44, 19 June 2019
• Benchmark/GEOS-Chem 12.7.0
  !colspan="2" bgcolor="#CCFFFF"|Updates that will affect full-chemistry simulations ....onlinelibrary.wiley.com/doi/full/10.1029/2018JD029046 Small alkyl nitrate chemistry]
  53 KB (7,304 words) - 17:04, 13 February 2020
• ISORROPIA II
  ...sium concentrations are not considered in the present study because of the issues with dust emissions previously mentioned. All inorganic aerosols are assume == Previous issues now resolved ==
  28 KB (4,263 words) - 17:37, 14 January 2020
• GEOS-Chem Newsletter June-July 2010
  #[[Chemistry Issues|Oxidants and Chemistry Working Group]] #[[Bromine chemistry mechanism]]
  11 KB (1,728 words) - 18:13, 8 December 2016
• Developing GEOS-Chem
  ! Harvard University Atmospheric Chemistry Modeling Group ! ! Harvard University Atmospheric Chemistry Modeling Group !
  49 KB (7,048 words) - 19:59, 20 September 2022
• GEOS-Chem 14.0.2
  ...formation about GEOS-Chem 14.0.2. This version contains fixes for several issues that were discovered after the release of patch version GEOS-Chem 14.0.1. The following fixes for bugs and technical issues have been added to GEOS-Chem 14.0.2. Also see the following Github pages:
  69 KB (8,991 words) - 18:34, 24 January 2023
• GEOS-Chem Newsletter November 2009
  * [[Chemistry Issues|Oxidants and Chemistry Working Group]] * LINOZ stratospheric ozone chemistry ''(Dylan Jones group @ U. Toronto)''
  11 KB (1,521 words) - 18:12, 8 December 2016
• GEOS-Chem Newsletter Winter 2013
  ...Nested Model Working Group]] is performing a 1-yr [[NOx-Ox-HC-aerosol|full-chemistry simulation]] for the North American Nested Grid with GEOS-5 met (0.5&deg; x The next set of updates to [[GEOS-Chem v9-02]] shall be chemistry updates, including:
  12 KB (1,964 words) - 14:08, 19 June 2019
• GEOS-Chem v11-01 HP Validation
  ...s section for reference. These tests helped identify and isolate remaining issues prior to running the preliminary benchmark. All results in this section use | Heterogeneous Chemistry
  17 KB (2,711 words) - 18:58, 10 May 2019