GEOS-Chem 12.6.0 Released 18 Oct 2019 Contains the following updates: Combined heterogeneous chemistry updates, includes N2O5, NO3, NO2 reactive uptake updates Subgrid cloud NOy chemistry HNO3 cold-temperature deposition Quick fix for aerosol pH calculation when dry Remove isoprene in VBS (leaving aqueous) Updated aerosol hygroscopicity and optics Add EDGAR BCPI and BCPO emissions for remaining sectors to DICE-Africa Simple parameterization for CO2 dependence of stomatal resistance (off by default) Aerosol nitrate photolysis option (off by default) CMake in GEOS-Chem Classic (optional) Enable GEOS-Chem "Classic" netCDF (History) diagnostics to be subsetted vertically and horizontally BB4CMIP historical biomass burning emissions (1750-2014) (optional) Surface diagnostic (O3, HNO3) with user-selected height APM update and integration with GEOS-Chem 12 For more information about this release. please see: http://wiki.geos-chem.org/GEOS-Chem_12#12.6.0 To view the benchmark evaluation plots, please see: http://wiki.seas.harvard.edu/geos-chem/index.php/Benchmark/GEOS-Chem_12.6.0 Read the GEOS-Chem online manual at: http://manual.geos-chem.org This release is compatible with GCHP. See the GCHP online manual for more information: http://wiki.geos-chem.org/Getting_Started_With_GCHP Learn how you can run GEOS-Chem on the Amazon Web Services cloud computing platform: http://cloud.geos-chem.org

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 www.geos-chem.org and wiki.geos-chem.org.

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