README -- Describes contents of HEMCO/TAGGED_O3/v2014-09 directory
19 Apr 2018
GEOS-Chem Support Team
geos-chem-support@g.harvard.edu


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

This directory contains the O3 production and loss data (archived from past
GEOS-Chem full-chemistry simulations) needed to drive the GEOS-Chem tagged O3
specialty simulation.

For more information, please see:
http://wiki.seas.harvard.edu/geos-chem/index.php/Tagged_O3_simulation

NOTE: These prod/loss data files are used for GEOS-Chem unit tests.  If you
are using the tagged O3 simulation, you chould create your own netCDF files
from the POx and LOx family output of a GEOS-Chem full-chemistry simulation.



Files:
===============================================================================

###############################################################################
#####   NOTE: The netCDF file attribute 'lev:positive = "up"' was added   #####
#####   to all files in TAGGED_O3/v2014-09 having a vertical dimension.   #####
#####   This was done to facilitate reading these files with GCHP.        #####
#####      -- Bob Yantosca (27 Feb 2017)                                  #####
###############################################################################

O3_PRODLOSS.geos5.4x5.nc

 -- Contains O3 production and loss data on the GEOS-5 4x5 grid.  These 
    were generated from a 1-year GEOS-Chem simuation.  This file
    was created from the daily bpch files in the prior data directory
    GEOS_MEAN/O3_PROD_LOSS/2004.geos5.4x5.

    Resolution  : GEOS-CHEM 4 x 5 grid (72 x 46 boxes)
    Units       : kg m-3 s (POX); m-3 s-1 (LOX)
    Timestamps  : Each day from 2004/01/01 thru 2004/12/31
    Compression : Level 1 (nccopy -d1)
    Chunking    : nccopy -c lon/72,lat/46,lev/1,time/1


O3_PRODLOSS.geosfp.4x5.nc
O3_PRODLOSS.merra.4x5.nc
O3_PRODLOSS.merra2.4x5.nc

 -- Symbolic links to the file O3_PRODLOSS.geos5.4x5.nc


O3_PRODLOSS.geos4.4x5.nc

    %%% NOW OBSOLETE %%%

 -- Contains O3 production and loss data on the GEOS-5 4x5 grid.  These 
    were generated from a 1-year GEOS-Chem simuation.  This file
    was created from the daily bpch files in the prior data directory
    GEOS_MEAN/O3_PROD_LOSS/2004.geos5.4x5.

    Resolution  : GEOS-CHEM 4 x 5 grid (72 x 46 boxes)
    Units       : kg m-3 s (POX); m-3 s-1 (LOX)
    Timestamps  : Each day from 2003/01/01 thru 2003/12/31
    Compression : None