Stratospheric Radiance Variations As Seen By Horizon Sensors

Herman Graff; Marshall D. Earle

doi:10.1117/12.956767

12 December 1978 Stratospheric Radiance Variations As Seen By Horizon Sensors

Herman Graff, Marshall D. Earle

Proceedings Volume 0156, Modern Utilization of Infrared Technology IV; (1978) https://doi.org/10.1117/12.956767
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

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.

Citation Download Citation

Herman Graff and Marshall D. Earle "Stratospheric Radiance Variations As Seen By Horizon Sensors", Proc. SPIE 0156, Modern Utilization of Infrared Technology IV, (12 December 1978); https://doi.org/10.1117/12.956767

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