HR: 0830h
AN: A21D-1006    [PDF]
TI: Ozone, Aerosols and other Atmospheric Products from Version-8 TOMS Algorithm
AU: * Ahmad, S P
EM: ahmad@daac.gsfc.nasa.gov
AF: Goddard Earth Sciences Distributed Active Archive Center(GES DAAC), Code 902/SSAI, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Bhartia, P K
EM: Pawan.K.Bhartia@nasa.gov
AF: Atmospheric Chemistry and Dynamics Branch, Code 916, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: McPeters, R D
EM: Richard.D.McPeters@nasa.gov
AF: Atmospheric Chemistry and Dynamics Branch, Code 916, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Herman, J R
EM: Jay.R.Herman@nasa.gov
AF: Atmospheric Chemistry and Dynamics Branch, Code 916, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Wellemeyer, C G
EM: Charles.G.Wellemeyer.1@gsfc.nasa.gov
AF: Science Systems and Applications, Inc. (SSAI), 10210 Greenbelt Road, Lanham, MD 20706 United States
AU: Torres, O
EM: torres@tparty.gsfc.nasa.gov
AF: University of Maryland, Baltimore County, 1000 Hilltop Road, Baltimore, MD 21250 United States
AU: Krueger, A J
EM: akrueger@umbc.edu
AF: University of Maryland, Baltimore County, 1000 Hilltop Road, Baltimore, MD 21250 United States
AU: Johnson, J E
EM: jjohnson@daac.gsfc.nasa.gov
AF: Goddard Earth Sciences Distributed Active Archive Center(GES DAAC), Code 902/SSAI, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AB: NASA has provided scientists with high resolution daily global maps of total column ozone obtained from a series of Total Ozone Mapping Spectrometer(TOMS) instruments flown on Nimbus-7 in 1978, Meteor-3 in 1991, the Advanced Earth Observing Satellite (ADEOS) and Earth Probe (EP) satellites in 1996. EP-TOMS (launched a few months prior to ADEOS-TOMS), is the currently operating TOMS instrument providing the ozone data continuity and key information on ozone trends. TOMS instruments have also been used for monitoring dust plumes, smoke from biomass burning, and ash and sulfur dioxide from volcanoes. The V8 TOMS algorithm is the most recent version of the buv (backscattered ultraviolet) radiance based total ozone retrieval algorithms. The TOMS algorithm has undergone more than two decades of progressive refinement. It enhances the previous version (V7) ozone retrievals by taking care of several small errors that were discovered by extensive error studies using radiative transfer models and by comparison with ground-based instruments. We estimate that the new TOMS algorithm is capable of producing total ozone with rms error of about 2 percent. This algorithm will also be used for retrieval of total column ozone from the buv measurements of Ozone Monitoring Instrument (OMI) to be flown on the Aura spacecraft (early 2004) that will provide continuity to the long time series of total column ozone retrieved using almost the same algorithm (to be consistent) for the study of ozone trend. The Goddard Earth Sciences Data Active Archive Center(GES DAAC) has been responsible for archiving the high quality ozone and other related products derived from the TOMS UV radiances and making it available to users. Additional products include effective Lambertian surface reflectivity, effective cloud fraction, a sun glint index, aerosol characteristics, an SO2 index, surface spectral UV and erythemal weighted irradiance. This presentation will provide some highlights of the standard products retrieved from the new V8 algorithm and examples of some new TOMS research products such as aerosol optical thickness and atmospheric single scattering albedo produced by the NASA/Goddard Ozone Processing Team (OPT). Information on data support and services provided by the GES DAAC Upper Atmosphere Data Support Team will also be presented.
UR: http://daac.gsfc.nasa.gov
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0340 Middle atmosphere--composition and chemistry
DE: 1610 Atmosphere (0315, 0325)
DE: 1640 Remote sensing
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting