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Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) Data Products User's GuideTwo data products from the Total Ozone Mapping Spectrometer (TOMS) onboard Nimbus-7 have been archived at the Distributed Active Archive Center, in the form of Hierarchical Data Format files. The instrument measures backscattered Earth radiance and incoming solar irradiance; their ratio is used in ozone retrievals. Changes in the instrument sensitivity are monitored by a spectral discrimination technique using measurements of the intrinsically stable wavelength dependence of derived surface reflectivity. The algorithm to retrieve total column ozone compares measured Earth radiances at sets of three wavelengths with radiances calculated for different total ozone values, solar zenith angles, and optical paths. The initial error in the absolute scale for TOMS total ozone is 3 percent, the one standard deviation random error is 2 percent, and drift is less than 1.0 percent per decade. The Level-2 product contains the measured radiances, the derived total ozone amount, and reflectivity information for each scan position. The Level-3 product contains daily total ozone amount and reflectivity in a I - degree latitude by 1.25 degrees longitude grid. The Level-3 product also is available on CD-ROM. Detailed descriptions of both HDF data files and the CD-ROM product are provided.
Document ID
19960022782
Document Type
Other - NASA Reference Publication (RP)
Authors
McPeters, Richard D.
(NASA Greenbelt, MD United States)
Bhartia, P. K.
(NASA Greenbelt, MD United States)
Krueger, Arlin J.
(NASA Greenbelt, MD United States)
Herman, Jay R.
(NASA Greenbelt, MD United States)
Schlesinger, Barry M.
(Hughes STX, Inc. Lanham, MD United States)
Wellemeyer, Charles G.
(Hughes STX, Inc. Lanham, MD United States)
Seftor, Colin J.
(Hughes STX, Inc. Lanham, MD United States)
Jaross, Glen
(Hughes STX, Inc. Lanham, MD United States)
Taylor, Steven L.
(Hughes STX, Inc. Lanham, MD United States)
Swissler, Tom
(Hughes STX, Inc. Lanham, MD United States)
Torres, Omar
(Hughes STX, Inc. Lanham, MD United States)
Labow, Gordon
(Hughes STX, Inc. Lanham, MD United States)
Byerly, William
(Hughes STX, Inc. Lanham, MD United States)
Cebula, Richard P.
(Hughes STX, Inc. Lanham, MD United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1996
Subject Category
Geophysics
Report/Patent Number
Rept-96B00064
NAS 1.61:1384
NASA-RP-1384
Accession Number
96N25675
Funding Number(s)
CONTRACT_GRANT: NAS5-31755
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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