HR: 0830h
AN: A21D-0996    [PDF]
TI: Validation of TOMS Using SBUV and SBUV/2 Data Improved with In-flight Data Validation Methods and Version 8 Processing
AU: * Taylor, S L
EM: Steven_taylor@ssaihq.com
AF: SSAI, 10210 Greenbelt Rd, Lanhan, MD 20706 United States
AU: Wellemeyer, C
EM: charlie_wellemeyer@ssaihq.com
AF: SSAI, 10210 Greenbelt Rd, Lanhan, MD 20706 United States
AU: Huang, L
EM: liang-kang_huang@ssaihq.com
AF: SSAI, 10210 Greenbelt Rd, Lanhan, MD 20706 United States
AU: Deland, M T
EM: matt_deland@ssaihq.com
AF: SSAI, 10210 Greenbelt Rd, Lanhan, MD 20706 United States
AU: Haffner, D P
EM: david_haffner@ssaihq.com
AF: SSAI, 10210 Greenbelt Rd, Lanhan, MD 20706 United States
AU: Bhartia, P K
EM: Pawan.Bhartia@nasa.gov
AF: Goddard Space Flight Center, Greenbelt Road, Greenbelt, MD 20771
AB: A continuous record of SBUV type measurements of global total ozone and its vertical distribution starts in November 1978 with the Nimbus-7. The SBUV/2 instruments on NOAA-11, NOAA-9 and the presently operating NOAA-16 complete this record to the present. Unfortunately, all these instruments had at least one problem with either albedo calibration, photomultiplier tube non-linearity, stray light and/or location error. In the past, certain limited corrections for albedo calibration drift and the PMT non-linearity have been implemented using internal data validation techniques. However, with the more precise and sophisticated new Version 8 processing to characterize the atmospheric radiances, these internal validation techniques have been further refined and expanded, in particular for radiances used to derive the vertical distribution (profile) of ozone. Total ozone derived from ozone profiles at high sun and low latitude conditions is considerably less sensitive to calibration drift than the TOMS derived total ozone. This occurs because the profile derived total ozone uses SBUV and SBUV/2 channels that are not available on the TOMS and have superior total ozone sensitivity. This SBUV derived total ozone is used to validate the long-term trend of Version 8 TOMS data.
DE: 0340 Middle atmosphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting