README -- Describes contents of CHEM_INPUTS/FAST_JX/v2018-09
19 Sep 2018
GEOS-Chem Support Team
geos-chem-support@g.harvard.edu

Overview:
===============================================================================

This directory contains information for input into the FAST-JX photolysis 
mechanism.


Files:
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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


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).