U.S. Environmental Protection Agency
Office of Mobile Sources
April 1999


Directory Contents for OMS/OMS1_OMS2/xymap directory.

This directory contains files of the layer 1 hourly gridded ozone
predictions for the 1995/1996 Base Year and 2007 Budget model
runs performed for the NOx SIP call Supplemental Notice of
Proposed Rulemaking (SNPR) and the ozone predictions for the OMS1
and OMS2 model runs.  Each file contains data for a single day in
the standard UAM-V "xymap" format.  Data are provided for the
following emission scenarios:

-- OMS 1           
-- OMS 2
-- SNPR_9596_base    
-- SNPR_2007_Budget

The naming convention used for these files is described below
using the following file as an example:

OMS1/map88/mapL1_01jul88_OMST1.gz 
   
OMS1:   scenario name directory
map88:  output directory for specific episode
map:    file type - map file denotes hourly data
L1:     data are from Layer 1 of the model ( lowest layer )
01jul88:  episode date of the data in the file
OMST1:  scenario code
gz:  gzip

The following is an example of the ouput file for the OMS1 model runs.

OMS1 Runs:
           .../map88/mapL1.*jul88_OMST1.gz 	
*denotes data are provided for 01 through 11jul88
           .../map91/mapL1.*jul91_OMST1.gz
*denotes data are provided for 13 through 21jul91
           .../map93/mapL1.*jul93_OMST1.gz
*denotes data are provided for 20 through 30jul93
           .../map95/mapL1.*jul95_OMST1.gz
*denotes data are provided for 07 through 18jul95


These files are in binary format.  Use the fortran code "ascii.f"
to read the xymap files and to write them in ascii format.  This
program must be compiled using a UNIX fortran compiler.