README -- Describes contents of CHEM_INPUTS/FAST_JX/v2019-06 27 Jun 2019 GEOS-Chem Support Team geos-chem-support@g.harvard.edu Overview: =============================================================================== This directory contains information for input into the FAST-JX photolysis mechanism. Files: =============================================================================== FJX_j2j.dat: -- Contains information to link GEOS-Chem chemical species to Fast-JX species. For more details on the contents of this file see: http://wiki.seas.harvard.edu/geos-chem/index.php/FAST-JX_v7.0_photolysis_mechanism#FJX_j2j.dat ######################################################################## ### UPDATE FOR 12.6.0: ### ### Add an option for photolysis of aerosol nitrate (NIT(s)) ### ### yielding HNO2+NO2. (T. Sherwen, P. Kasibhatla) ### ######################################################################## FJX_spec.dat -- Contains FAST-JX cross sections. jv_spec_mie.dat -- Contains aerosol optical properties at 5 wavelengths. brc.dat dust.dat org.dat so4.dat soot.dat ssa.dat ssc.dat h2so4.dat -- Contains aerosol optical properties for: brc : brown carbon dust : dust org : organic carbon so4 : sulfate soot : black carbon ssa : accumulation-mode sea salt aerosol ssc : coarse-mode sea salt aerosol h2so4 : sulfuric acid (UCX-based mechanisms only) The properties are provided at multiple wavelengths to be used in the online calculation of the aerosol optical depth diagnostics. Up to three wavelentghs can be selected in the Radiation Menu of input.geos. These properties are also used for in the RRTMG radiative transfer model (if enabled). ######################################################################## ### UPDATE FOR 12.6.0: ### ### The so4.dat and org.dat files have been updated following ### ### Latimer et al., 2019 , https://www.atmos-chem-phys.net/19/2635/2019/acp-19-2635-2019-discussion.html) ### ########################################################################