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Creating a Satellite-Based Record of Tropospheric OzoneThe TES retrieval algorithm has been applied to IASI radiances. We compare the retrieved ozone profiles with ozone sonde profiles for mid-latitudes for the year 2008. We find a positive bias in the IASI ozone profiles in the UTLS region of up to 22 %. The spatial coverage of the IASI instrument allows sampling of effectively the same air mass with several IASI scenes simultaneously. Comparisons of the root-mean-square of an ensemble of IASI profiles to theoretical errors indicate that the measurement noise and the interference of temperature and water vapour on the retrieval together mostly explain the empirically derived random errors. The total degrees of freedom for signal of the retrieval for ozone are 3.1 +/- 0.2 and the tropospheric degrees of freedom are 1.0 +/- 0.2 for the described cases. IASI ozone profiles agree within the error bars with coincident ozone profiles derived from a TES stare sequence for the ozone sonde station at Bratt's Lake (50.2 deg N, 104.7 deg W).
Document ID
20150007826
Document Type
Conference Paper
External Source(s)
Authors
Oetjen, Hilke (California Univ. Los Angeles, CA, United States)
Payne, Vivienne H. (Jet Propulsion Lab. La Canada, CA, United States)
Kulawik, Susan S. (Jet Propulsion Lab. La Canada, CA, United States)
Eldering, Annmarie (California State Univ. Los Angeles, CA, United States)
Worden, John (Jet Propulsion Lab. La Canada, CA, United States)
Edwards, David P. (National Center for Atmospheric Research Boulder, CO, United States)
Francis, Gene L. (National Center for Atmospheric Research Boulder, CO, United States)
Worden, Helen M. (National Center for Atmospheric Research Boulder, CO, United States)
Date Acquired
May 8, 2015
Publication Date
September 16, 2013
Subject Category
Meteorology and Climatology
Meeting Information
2013 EUMETSAT Meteorological Satellite Conference(Vienna)
Funding Number(s)
CONTRACT_GRANT: NNX11AE19G
Distribution Limits
Public
Copyright
Other
Keywords
pollutant
MetOp-B
MetOp-A
Tropospheric Emission Spectrometer (TES)
greenhouse gas
ultra-violet radiation
Infrared Atmospheric Sounding Instruments (IASI)
NASA Aura satellite