Reinhard Beer,
Thomas A. Glavich,
and David M. Rider
The authors are with the Jet Propulsion Laboratory, MS 183-301, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109-8001. USA
Reinhard Beer, Thomas A. Glavich, and David M. Rider, "Tropospheric emission spectrometer for the Earth Observing System’s Aura satellite," Appl. Opt. 40, 2356-2367 (2001)
The Tropospheric Emission Spectrometer (TES) is an imaging
infrared Fourier-transform spectrometer scheduled to be launched into
polar Sun-synchronous orbit aboard the Earth Observing System’s Aura
satellite in June 2003. The primary objective of the TES is to make
global three-dimensional measurements of tropospheric ozone and of the
physical–chemical factors that control its formation, destruction, and
distribution. Such an ambitious goal requires a highly
sophisticated cryogenic instrument operating over a wide frequency
range, which, in turn, demands state-of-the-art infrared detector
arrays. In addition, the measurements require an instrument that
can operate in both nadir and limb-sounding modes with a precision
pointing system. The way in which these mission objectives flow
down to the specific science and measurement requirements and in turn
are implemented in the flight hardware are described. A brief
overview of the data analysis approach is provided.
Cathy Clerbaux, Juliette Hadji-Lazaro, Sébastien Payan, Claude Camy-Peyret, Jinxue Wang, David P. Edwards, and Ming Luo Appl. Opt. 41(33) 7068-7078 (2002)
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VMR, volume mixing ratio.
Sensitivity range maps to expected
concentration range (higher concentration means higher
uncertainty): ppbv, parts in 109 by volume; ppmv,
parts in 106 by volume: pptv, parts in 103 by
volume. Some species (notably NOx) will
require some signal averaging to meet requirements.
Water (and, probably, snow and ice)
emissivities are known and are therefore input, not output, parameters.
Tropospheric concentration known.
VMR, volume mixing ratio.
Sensitivity range maps to expected
concentration range (higher concentration means higher
uncertainty): ppbv, parts in 109 by volume; ppmv,
parts in 106 by volume: pptv, parts in 103 by
volume. Some species (notably NOx) will
require some signal averaging to meet requirements.
Water (and, probably, snow and ice)
emissivities are known and are therefore input, not output, parameters.
Tropospheric concentration known.