Data Set "HMET01_GOES8_L2_96"
-----------------------------
Revised: April 25, 2001


BOREAS Follow-on HMet-1 Level-2 GOES-8 1996 Short and Longwave Radiation Image Inventory

The BOREAS HMet-1 team collected and processed several Level-1 GOES-7 and GOES-8
image data sets for 1994-1996, and GOES-7 Level-2 for 1994 over the BOREAS study
region. This data set contains BOREAS regional shortwave and longwave radiation
images at the surface and the top of the atmosphere derived from GOES-8 data.
These GOES-8 Level-2 data cover the period from 12-Feb-1996 to 22-Oct-1996.
The main difference between this data set and 1994 data set is in the extended
spatial coverage and the grid cell size. The data are stored in binary image
format files. Note that some of the data files on the BOREAS CD-ROMs have
been compressed using Zip compression.

Acknowledge: Eric A. Smith, Jiujing Gu


Note: due to the large storage requirements for these images, only an inventory
listing and some sample files are supplied on the CD-ROM to inform users of
what data were collected. The complete GOES-8 image data are available from
the Earth Observing System Data and Information System (EOSDIS) Oak Ridge
National Laboratory (ORNL) Distributed Active Archive Center (DAAC).

  ORNL DAAC User Services Office
  Oak Ridge National Laboratory
  P.O. Box 2008, MS 6407
  Oak Ridge, TN 37831-6407, USA
  Telephone: +1 (423) 241-3952
  FAX: +1 (423) 574-4665
  E-mail: ornldaac@ornl.gov
  URL: http://www-eosdis.ornl.gov/


Image Format Information
------------------------
The level 2 GOES-8 1996 gridded radiation image data set contains 241 files
(see section 7.2.1 of the documentation). The 11-band images (corresponding
to the 11 parameters listed sections 1.4 and 7 of the documentation) are stored
in band sequential (BSQ) format files (with headers) for each 30 minute time
period. To view the image data, a 12,500-byte ASCII header record must be
skipped first. The images are 250 samples by 250 lines, each pixel is a
two-byte integer, low order byte first (the data may need to be byte swapped 
to display correctly). Thus, each file contains 1387500 bytes
[12500 header bytes + (250 lines x 250 samples x 2 bytes pixels x 11 bands)].
This directory contains the SRB image files in the form of Zip compressed
files. Each Zip file contains all the available SRB image files for the
given Julian day.

        File Name            Contents
        ---------            --------
        0_readme.txt         This document.

        read_rad_96.f        Fortran program to read the SRB image 
                             files.  This program and run can be 
                             compiled on an SGI 32 bit IRIX machine 
                             with:

                                f77 -bytereclen Read_rad_96.f
                                a.out Sample.image

        lat_lon_dat.zip      Latitude and longitude navigation data
                             for the SRB image files in the BOREAS_96 
                             directory.

        sample_img.zip       SRB image for 96 264 1800 used to produce 
                             Sample_output.

        sample.output        Output from running Read_rad_96.f with
                             Sample.image.