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geoschem/geos-chem: GEOS-Chem 12.3.1

The International GEOS-Chem User Community

GEOS-Chem 12.3.1
Released 08 Apr 2019

Contains the following updates:
(1) Fix the netCDF diagnostic for noontime J-values
(2) Planeflight diagnostic now writes out data for the last timestep of the day
(3) Reduce memory footprint: Do not allocate memory to array MINIT in strat_chem_mod.F90
(4) Declare State_Met%AREA_M2 as 2-dimensional, not 3-dimensional

For more information about this release. please see:

To view the benchmark evaluation plots, please see:
(NOTE: 12.3.0 is the most recent version for which benchmark plots are available)

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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