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geoschem/geos-chem: GEOS-Chem 12.5.0

The International GEOS-Chem User Community

GEOS-Chem 12.5.0 Released 09 Sep 2019 DOI

Contains the following updates:

(1) Retire obsolete emission inventories
(2) Updated offline biogenic emissions generated with GEOS-Chem 12.3.0
(3) Updated volcano emissions to include eruptive emissions through April 2018
(4) Remove CO from MEGAN HEMCO extension to avoid double counting
(5) Fixes for GFED4 emissions
(6) Scale DICE-Africa emissions to address errors in inventory
(7) Separate anthropogenic PM2.5 dust source from the DustDead extension
(8) Corrections for CFCs in the chemistry mechanism
(9) Fix typo in CLD_PARAMS routine in gckpp_HetRates.F90
(10) Bug fix: make sure stratospheric BrY concentrations are read properly each month
(11) Enable accurate cloud pH diagnostic calculation via post-processing
(12) Bug fix for proposed Henry's law constants
(13) Update GCHP to use MAPL v1.0.0 and ESMF v8.0.0 beta snapshot 28
(14) Replace 4x5 input files with higher resolution equivalents to avoid ESMF domain decomposition issue at high core counts

For more information about this release. please see:

To view the benchmark evaluation plots, please see:

Read the GEOS-Chem online manual at:

This release is compatible with GCHP. See the GCHP online manual for more information:

Learn how you can run GEOS-Chem on the Amazon Web Services cloud computing platform:

Please see the LICENSE.txt and AUTHORS.txt files in the root folder for the GEOS-Chem license description (based on the MIT license) and a complete list of authors. For more information about GEOS-Chem in general, please see and
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