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SHADOZ Comparisons with TOMSOne year of balloon-sonde profiles taken from the Southern Hemisphere ADditional OZonesondes (SHADOZ) archive have been compared with data from the Earth Probe Total Ozone Mapping Spectrometer (TOMS) by integrating the balloon profiles to obtain total column ozone. The TOMS backscattered ultraviolet measurement loses sensitivity to ozone in the lowest five to ten kilometers of the atmosphere, limiting the accuracy of the TOMS measurement of tropospheric ozone. This is shown by the increased deviation between TOMS total ozone and the sonde total in the tropical Pacific, where tropospheric ozone is known to be lower than the tropical climatological average. The TOMS underestimate is further confirmed by the correlation of deviations between TOMS and the sondes with changes in lower tropospheric ozone. After allowing for the TOMS offset, the sondes appear to underestimate ozone by three to five percent. This is confirmed by a limited number of comparisons with Dobson data.
Document ID
Document Type
Preprint (Draft being sent to journal)
McPeters, Richard D. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Labow, Gordon J. (Raytheon Information Technology and Scientific Services Greenbelt, MD United States)
Witte, Jacquelyn (SMAC Greenbelt, MD United States)
Einaudi, Franco
Date Acquired
August 19, 2013
Publication Date
January 1, 2000
Subject Category
Environment Pollution
Distribution Limits
Work of the US Gov. Public Use Permitted.