README -- describes contents of HEMCO/MERCURY/v2022-04
29 Mar 2022
GEOS-Chem Support Team
geos-chem-support@g.harvard.edu


Overview
========

This folder contains oxidant and aerosol fields used for the new Hg
simulation with the KPP-generated chemistry mechanism.  For more
information, please contact Viral Shah (Github: @viral211).


Files:
======

Aerosols_for_Hg_sim_2016.nc4

  -- Aerosol fields archived from a GEOS-Chem fullchem simulation for 2016.

     AOD fields [unitless]
     ------------------------------------------
     float AOD_BC(time, lev, lat, lon) ;
     float AOD_BGSULF(time, lev, lat, lon) ;
     float AOD_DST1(time, lev, lat, lon) ;
     float AOD_DST2(time, lev, lat, lon) ;
     float AOD_DST3(time, lev, lat, lon) ;
     float AOD_DST4(time, lev, lat, lon) ;
     float AOD_DST5(time, lev, lat, lon) ;
     float AOD_DST6(time, lev, lat, lon) ;
     float AOD_DST7(time, lev, lat, lon) ;
     float AOD_ICEI(time, lev, lat, lon) ;
     float AOD_OC(time, lev, lat, lon) ;
     float AOD_SO4(time, lev, lat, lon) ;
     float AOD_SSA(time, lev, lat, lon) ;
     float AOD_SSC(time, lev, lat, lon) ;

     Aerosol areas [cm2/cm3]
     ------------------------------------------
     float Area_BC(time, lev, lat, lon) ;
     float Area_BGSULF(time, lev, lat, lon) ;
     float Area_DST1(time, lev, lat, lon) ;
     float Area_DST2(time, lev, lat, lon) ;
     float Area_DST3(time, lev, lat, lon) ;
     float Area_DST4(time, lev, lat, lon) ;
     float Area_DST5(time, lev, lat, lon) ;
     float Area_DST6(time, lev, lat, lon) ;
     float Area_DST7(time, lev, lat, lon) ;
     float Area_ICEI(time, lev, lat, lon) ;
     float Area_OC(time, lev, lat, lon) ;
     float Area_SO4(time, lev, lat, lon) ;
     float Area_SSA(time, lev, lat, lon) ;
     float Area_SSC(time, lev, lat, lon) ;

     Aerosol radii [cm]
     ------------------------------------------
     float Radi_BC(time, lev, lat, lon) ;
     float Radi_BGSULF(time, lev, lat, lon) ;
     float Radi_DST1(time, lev, lat, lon) ;
     float Radi_DST2(time, lev, lat, lon) ;
     float Radi_DST3(time, lev, lat, lon) ;
     float Radi_DST4(time, lev, lat, lon) ;
     float Radi_DST5(time, lev, lat, lon) ;
     float Radi_DST6(time, lev, lat, lon) ;
     float Radi_DST7(time, lev, lat, lon) ;
     float Radi_ICEI(time, lev, lat, lon) ;
     float Radi_OC(time, lev, lat, lon) ;
     float Radi_SO4(time, lev, lat, lon) ;
     float Radi_SSA(time, lev, lat, lon) ;
     float Radi_SSC(time, lev, lat, lon) ;


Oxidants_for_Hg_sim_2016.nc4

  -- Oxidant fields archived from a GEOS-Chem fullchem simulation for 2016

     Concentrations [molec/cm3]
     ------------------------------------------
     float Br(time, lev, lat, lon) ;
     float BrO(time, lev, lat, lon) ;
     float CH4(time, lev, lat, lon) ;
     float CO(time, lev, lat, lon) ;
     float Cl(time, lev, lat, lon) ;
     float ClO(time, lev, lat, lon) ;
     float HO2(time, lev, lat, lon) ;
     float NO(time, lev, lat, lon) ;
     float NO2(time, lev, lat, lon) ;
     float O3(time, lev, lat, lon) ;
     float OH(time, lev, lat, lon) ;
     float RH(time, lev, lat, lon) ;
     float H2O2(time, lev, lat, lon) ;

     PM2.5 concentration [ug/m3]
     ------------------------------------------
     float PM25(time, lev, lat, lon) ;

     Fraction of organic aerosol [unitless]
     ------------------------------------------
     float fOA(time, lev, lat, lon) ;