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Proceedings Paper

Stratospheric Radiance Variations As Seen By Horizon Sensors
Author(s): Herman Graff; Marshall D. Earle
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Paper Abstract

Current earth radiance models in the 14-16 micrometer band assume that the temperature of stratospheric CO2 alone controls horizon sensor output and that radiance decreases monotonically from the hot pole to the cold pole. Data are presented which demonstrate the existence of unpredicted variable output from horizon sensors as the sensor traverses the earth from pole to pole. It is concluded that horizon sensor output is influenced by phenomena not included in current models. The primary contributors to variable output are believed to be high-altitude clouds and/or high-altitude jet streams. It is hypothesized that a systematic study of actual horizon sensor output could ultimately lead to improved understanding of the lower stratosphere. Such an understanding might provide an early warning system for active weather fronts as well as an improved interpretation of horizon sensor output with resultant reduction in attitude uncertainty for satellites dependent on horizon sensor output.

Paper Details

Date Published: 12 December 1978
PDF: 4 pages
Proc. SPIE 0156, Modern Utilization of Infrared Technology IV, (12 December 1978); doi: 10.1117/12.956767
Show Author Affiliations
Herman Graff, The Aerospace Corp. (United States)
Marshall D. Earle, The Aerospace Corp. (United States)

Published in SPIE Proceedings Vol. 0156:
Modern Utilization of Infrared Technology IV
Irving J. Spiro, Editor(s)

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