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Proceedings Paper

Pioneer Venus Infrared Radiometer: Design, Implementation And Preliminary Results
Author(s): J. V. Martonchik; F. W. Taylor
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Paper Abstract

The multichannel infrared radiometer on Pioneer Venus Orbiter is similar in concept to Earth weather satellite instruments. Its main function is to measure the thermal emission from the atmosphere at seven pressure levels above the Venus clouds, allowing a determination of the vertical temperature structure. In addition to these temperature sounding channels there are two channels operating in the visible and near infrared to study the structure of the upper clouds, and a far infrared channel sensitive to water vapor in and above the clouds. The instrument can operate in four distinct modes including a calibration sequence. By utilizing the spinning action of the spacecraft and the relatively short integration times (200 msec in global mode and 30 msec in local mode) a substantial portion of the planet can be mapped within a 90 minute data taking period centered about periapsis time. During the course of the mission to date, many thousands of temperature profiles have been retrieved covering a latitude range from the pole to the equator. These profiles, coupled with extensive mapping of the structure of the cloud tops over a sufficiently long time span, will produce considerable insight into the dynamical processes of the upper atmosphere.

Paper Details

Date Published: 27 September 1979
PDF: 7 pages
Proc. SPIE 0183, Space Optics II, (27 September 1979); doi: 10.1117/12.957425
Show Author Affiliations
J. V. Martonchik, Jet Propulsion Laboratory (United States)
F. W. Taylor, Jet Propulsion Laboratory (United States)

Published in SPIE Proceedings Vol. 0183:
Space Optics II
Charles L. Wyman, Editor(s)

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