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Tropospheric Ozone from the TOMS TDOT (TOMS-Direct-Ozone-in-Troposphere) Technique During SAFARI-2000There are a number of published residual-type methods for deriving tropospheric ozone from TOMS (Total Ozone Mapping Spectrometer). The basic concept of these methods is that within a zone of constant stratospheric ozone, the tropospheric ozone column can be computed by subtracting stratospheric ozone from the TOMS Level 2 total ozone column, We used the modified-residual method for retrieving tropospheric ozone during SAFARI-2000 and found disagreements with in-situ ozone data over Africa in September 2000. Using the newly developed TDOT (TOMS-Direct-Ozone-in-Troposphere) method that uses TOMS radiances and a modified lookup table based on actual profiles during high ozone pollution periods, new maps were prepared and found to compare better to soundings over Lusaka, Zambia (15.5 S, 28 E), Nairobi and several African cities where MOZAIC aircraft operated in September 2000. The TDOT technique and comparisons are described in detail.
Document ID
Document Type
Conference Paper
Stone, J. B.
(Maryland Univ. College Park, MD United States)
Thompson, A. M.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Frolov, A. D.
(Maryland Univ. College Park, MD United States)
Hudson, R. D.
(Maryland Univ. College Park, MD United States)
Bhartia, P. K.
Date Acquired
August 20, 2013
Publication Date
January 1, 2002
Subject Category
Environment Pollution
Meeting Information
2002 Spring AGU: Validation and Satellite Data(Washington, DC)
Distribution Limits
Work of the US Gov. Public Use Permitted.

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