README -- describes 1-month benchmark simulation 13.0.0-beta.0 GEOS-Chem Support Team geos-chem-support@as.harvard.edu 03 Nov 2020 We ran this GEOS-Chem 1-month benchmark simulation (denoted 13.0.0-beta.0) in order to validate modifications since 12.9.0. For more information see the GEOS-Chem wiki: http://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_13.0.0