Polar cloud structure as derived from the Pioneer Venus Orbiter

Details Polar cloud structure as derived from the Pioneer Venus Orbiter Polar cloud structure as derived from the Pioneer Venus Orbiter

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.8082c&link_type=abstract

Journal of Geophysical Research, vol. 85, Dec. 30, 1980, p. 8082-8088.

Physics

2

Venus, Pvo Mission, Spacecraft Observations, Polar Regions, Occultations, Clouds, Structure, Oro Experiment, Absorption, Altitude, Oir Instrument, Hot Spots, Optical Properties, Density, Maps, Comparisons, Wavelengths, Infrared

Scientific paper

Vertical absorption coefficient profiles of the Venus clouds in the north polar regions recorded by the Pioneer Venus Orbiter on orbits 9, 18, and 19 at the S band indicate dense cloud decks at the 1.5 to 4.7 bar levels in the Venus atmosphere. These cloud decks are at lower altitudes than the clouds detected by Mariner 10 and Pioneer Venus probes, and are uniform in absorption characteristics in the polar regions. The regions close to the polar hot spots have depressed the upper cloud heights and increased polar density; these areas are free of thermal inversions characteristic of the north polar regions away from the hot spots.

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