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Proceedings Paper

Analyses of on-orbit determinations of the Clouds and the Earth's Radiant Energy System (CERES) thermistor bolometer sensor zero-radiance offsets
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Paper Abstract

The Clouds and Earth's Radiant Energy System (CERES) missions were designed to measure broadband earth-reflected shortwave solar and earth-emitted longwave radiances as well as earth-emitted narrow-band radiances in the water vapor window region between 8 and 12 micrometers . However, the CERES scanning thermistor bolometer sensor zero-radiance offsets were found to vary as much as 1.0 Wm-2sr-1 with the scan angle measurement geometry due to gravitational forces and systematic electronic noise. To minimize the gravitational effects, the Tropical Rainfall Measuring Mission (TRMM) Spacecraft CERES sensors; offsets were derived on-orbit as functions of scan elevation and azimuth angles from the January 7-8, 1998 radiometric observations of deep cold space, representative of a 3K blackbody.

Paper Details

Date Published: 24 September 1999
PDF: 12 pages
Proc. SPIE 3750, Earth Observing Systems IV, (24 September 1999); doi: 10.1117/12.363545
Show Author Affiliations
Robert Benjamin Lee, NASA Langley Research Ctr. (United States)
Susan Thomas, Science Applications International Corp. (United States)
Kory J. Priestley, NASA Langley Research Ctr. (United States)
Bruce R. Barkstrom, NASA Langley Research Ctr. (United States)
Jack Paden, Science Applications International Corp. (United States)
Dhirendra K. Pandey, Science Applications International Corp. (United States)
G. Louis Smith, Virginia Polytechnic Institute and State Univ. (United States)
Aiman Al-Hajjah, Science Applications International Corp. (United States)
Robert S. Wilson, Science Applications International Corp. (United States)


Published in SPIE Proceedings Vol. 3750:
Earth Observing Systems IV
William L. Barnes, Editor(s)

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