GEOS-Chem 12.8.1 21 May 2020 This version fixes several issues that were identified during and after the benchmarking process for version 12.8.0: Update the dry-run download data script to make files group-writeable Add more timers for gas-phase chemistry Reduce the amount of memory that GEOS-Chem dry-runs require Add bounds-checking and floating point exceptions to CMake "Debug" target Fix incorrect indexing for AOD diagnostics Updates for GEOS-Chem "Classic" HISTORY diagnostics: Fix for instantaneous timeseries diagnostics to avoid overwriting hour zero Fix to allow diagnostics with frequency="End" to properly straddle year-end boundaries Allow for missing species in boundary conditions Disable FlexGrid checks to allo...