This data product contains TOMS/Nimbus-7 UV-B Erythemal Local Noon Irradiance Monthly L3 Global 1x1.25 deg Lat/Lon Grid Version 8 data in ASCII format.
The Total Ozone Mapping Spectrometer (TOMS) Version 8 Monthly Gridded Data consist of monthly, global coverage of total column ozone, aerosol index, Lambertian effective reflectivity(Rayleigh corrected) and surface UV-B Erythemal irradiances. ... Four TOMS instruments have been successfully flown on the following satellites: Nimbus-7 (Nov. 1978 - May 1993), Meteor-3 (Aug. 1991 - Dec. 1994), Earth Probe (July 1996 - current), and ADEOS (Sep. 1996 - June 1997).
Earth Probe, Meteor-3 and Nimbus-7 data are currently reprocessed using the Version-8 algorithm (http://toms.gsfc.nasa.gov/version8/v8toms_atbd.pdf) . These Version-8 data are archived at NASA Goddard Earth Sciences Data and Information Services Center (GES DISC).
The total ozone, aerosol index, reflectivity data and UV-B Erythemal irradiances are mapped to a global grid of size 180 x 288 with a Lat/Lon resolution of 1.00 x 1.25 degrees. These data are also stored in the EOS Version of Hierarchical Data Format (HDF-EOS). HDF was developed by the National Center for Supercomputer Applications (NCSA) at the University of Illinois at Urbana-Champaign.
The GES DISC maintains an online Web-based system (Giovanni) for previewing the data, subsetting in ASCII format, and downloading the data and images. The URL for Giovanni is http://giovanni.gsfc.nasa.gov/.
The Level-2 data at instrument resolution(approx 50km x 50km pixel at nadir, in HDF5 EOS format) are also available from the GES DISC.
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Krueger, A., M. Schoeberl, P.Newman, and R.Stolarski, June 1992. ' The 1991 Antarctic Ozone Hole; TOMS Observations', Geophys. Res. Letters, 19: 1215-1218