HR: 0830h
AN: A21D-1012    [PDF]
TI: Total Ozone Mapping Spectrometer Data Processed With a New Algorithm
AU: * Wellemeyer, C G
EM: charlie_wellemeyer@ssaihq.com
AF: Science Systems and Applications, 10210 Greenbelt Road, Lanham, MD 20706
AU: Bhartia, P K
EM: Pawan.Bhartia@nasa.gov
AF: NASA Goddard Space Flight Center, Grennbelt Road, Greenbelt, MD 20771
AU: Taylor, S L
EM: steven_taylor@ssaihq.com
AF: Science Systems and Applications, 10210 Greenbelt Road, Lanham, MD 20706
AU: Qin, W
EM: wenhan_qin@ssaihq.com
AF: Science Systems and Applications, 10210 Greenbelt Road, Lanham, MD 20706
AU: Flynn, L E
EM: Lawrence.E.Flynn@noaa.gov
AF: NOAA NESDIS, World Weather Building, Suitland, MD 20746
AU: Seftor, C
EM: Colin_Seftor@raytheon.com
AF: Raytheon ITSS, 1616 McCormick Drive, Upper Marlboro, MD 20774
AU: Ahn, C
EM: cahn@ssaihq.com
AF: Science Systems and Applications, 10210 Greenbelt Road, Lanham, MD 20706
AB: The Total Ozone Mapping Spectrometer (TOMS) series comprises four instruments providing a total of 25 years of daily global stratospheric ozone data over the sunlit portion of the Earth. A new retrieval algorithm has been developed for TOMS and applied to the Nimbus 7 and Earth Probe TOMS Data Sets. The algorithm and the data have been designated Version 8. The algorithm is based on differential absorption across a pair of wavelength channels chosen close together to minimize the impact of wavelength dependent forward modeling errors. Version 8 enhancements include correction for the presence of tropospheric aerosols and sun glint from water surfaces, a better treatment of variability due to tropospheric ozone and temperature dependence, and an improved forward model, particularly in regions of persistent snow and ice. Among other things, the Version 8 enhancements have reduced latitudinal dependence seen previously in TOMS - Dobson comparisons, predominantly in the Southern Hemisphere's summer, when the tropospheric ozone, temperature, and snow/ice corrections are additive. The basic components of the algorithm and its impact on derived total ozone will be discussed.
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting