Other
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9115118p&link_type=abstract
Status Report, 29 Jan. 1990 National Environmental Satellite Service, Washington, DC.
Other
Noaa 9 Satellite, Ozone, Ozonometry, Total Ozone Mapping Spectrometer, Ultraviolet Spectrometers, Atmospheric Composition, Backscattering
Scientific paper
The NOAA ozone monitoring program was initiated by the National Environmental Satellite Data and Information Service (NESDIS) in December 1984 with the launch of the NOAA-9 operational satellite carrying the first operational Solar Backscatter Ultraviolet (SBUV/2) spectrometer. The primary conclusions include the following: (1) The NOAA-9 equator crossing time is continually later in the day due to precession of the orbit. This results in an ever-increasing angle of solar incidence on the diffuser plate, approaching values beyond those used in pre-launch radiometric calibration and testing. (2) The increasing equator crossing times also result in observations at greater solar zenith angles at the observed scenes introducing an uncertain zenith-angle dependency on the retrieved ozone values. (3) Compared to other sources of data (SBUV and TOMS on Nimbus 7 and the ground-base Dobson network), the total ozone amount derived from the SBUV/2 shows an increasing greater difference with SBUV/2 values being higher. Compared to selected subsets of Dobson values, the SBUV/2 - Dobson differences are diverging about 0.3 to 0.5 percent per year. (4) Short-term variations in total ozone derived from SBUV/2 measurements show excellent correlation with SBUV and TOMS data with respect to day-to-day, seasonal and latitudinal variabilities.
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