Satellite ozone data files for GLE CDAW                     4 December 2008
***************************************

File name convention:  'gle_STARTDATE_ENDDATE_SATELLITE_ozone.txt'

These ASCII data files contain Version 8 (V8) stratospheric profile ozone data 
from various SBUV/2 instruments flying on NOAA satellites.  All daytime ozone 
profiles taken at geomagnetic latitudes greater than 45 degrees in either 
hemisphere are listed for an approximate 2 week interval surrounding each GLE 
event.  Ozone values are reported as mixing ratios in parts per million by 
volume [ppmv], interpolated to six stratospheric pressure levels.  There are 13 
columns in each data file, with the following information on each line for an 
individual scan:

 Column   Content
 ######   ##########
     1    Year
     2    Day of year
     3    Time of scan [seconds UT]
     4    Latitude [positive = North, negative = South]
     5    Longitude [positive = East, negative = West]
     6    Solar zenith angle
     7    Geomagnetic latitude
  8-13    Ozone mixing ratio [ppmv] at 6 pressure levels:  0.5, 1.0, 2.0, 
            4.0, 7.0, 10.0 hPa.  Approximate altitudes = 53.3, 48.4, 43.6, 
            38.7, 34.8, 32.3 km.

NOTES
#####
  1.  The NOAA-9 data file for the November 1997 event is smaller than other 
files because SBUV/2 data were only collected on 3-4 orbits per day at that 
time.
  2.  The NOAA-14 and NOAA-17 data files for the August 2002 event currently 
end earlier than intended (08/27/02 and 08/30/02 respectively) because of a 
minor data processing glitch.  This error will be fixed soon.


Please contact Matt DeLand [matthew_deland@ssaihq.com] if you have any 
questions about these data.