GEOS-Chem 13.4.0

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GEOS-Chem Versions Page

This page includes information about GEOS-Chem 13.4.0 (currently under development)

Version overview

The following items have been added to GEOS-Chem 13.4.0 since the last GEOS-Chem version GEOS-Chem 13.3.4. Also see the following Github pages:

Feature Contributor(s) Model scope Notes and references
Updates that will affect full-chemistry benchmark simulations
Migrating sulfate chemistry into KPP Mike Long (GCST)
Viral Shah (Harvard)
Bob Yantosca (GCST)
Chemistry &
Structural
Fix bug in Henry law CALC_HEFF routine in hetchem computations Viral Shah (Harvard) Chemistry
Bug fix: Remove double-counting of HCl uptake on acidic sea salt Viral Shah (Harvard) Chemistry
Update surface resistance for ozone deposition to ice/snow Ryan Pound (York)
Shuting Zhai (UW)
Drydep
Use updated definition of PM2.5; Add PM10 diagnostic Bob Yantosca (GCST) Diagnostics &
Benchmarking
Fix scale factors applied to VOC aircraft emissions in AEIC inventory Flavio Quadros (TU Delft)
Seb Eastham (GCST)
Emissions &
Bug Fix
HEMCO bug fix: restore archiving via manual diagnostics (which had been inadvertently disabled in a prior update) Melissa Sulprizio (GCST)
Bob Yantosca (GCST)
Emissions
Use degassing-only volcano emissions in GEOS-Chem benchmark simulations Christoph Keller (GMAO)
Daniel Jacob (Harvard)
Emissions &
Benchmarking
Add option for driving GEOS-Chem with native GEOS meteorological files Liam Bindle (GCST) Structural
Updates that will NOT affect full-chemistry benchmark simulations
Updated Hg chemistry in KPP Viral Shah (Harvard)
Colin Thackray (Harvard)
Mike Long (GCST)
Bob Yantosca (GCST)
Chemistry
Bug fix: Use REAL*8 precision in for CH3O2 + OH reaction definition in fullchem.eqn Bob Yantosca (GCST) Chemistry
Updated Rn-222 emissions for TransportTracers simulations Bo Zhang (NIA) Emissions
Retire HEMCO extension for CH4 wetland emissions Melissa Sulprizio (GCST) Emissions
Updates to enable automated run directory creation Liam Bindle (GCST)
Melissa Sulprizio (GCST)
Run directory
Bug fix: Allow GEOS-Chem Classic History to archive irregular intervals (e.g. a month and a day) Bob Yantosca (GCST) Diagnostics
Updates that will only affect GCHP
Define a GCHP "Default" collection that will archive a small number of commonly-requested diagnostic fields Liam Bindle (GCST) Diagnostics

New data directories

The following data directories have been added or updated in this version. You will have to download the directories relevant to your simulation.

Inventory Type What was added? Directory
ZHANG_Rn222 Default for TransportTracers simulations Updated Rn222 emissions for TransportTracers simulations. See Bo Zhang et al (2021) HEMCO/ZHANG_Rn222/v2021-11
Hg simulation restart file Default for Hg simulations Sample restart file for the updated Hg mechanism. See Viral Shah et al (2021) ExtData/GEOSCHEM_RESTARTS/v2021-12