Computer Science
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992lpico.789r...1a&link_type=abstract
In Lunar and Planetary Inst., Papers Presented to the International Colloquium on Venus p 1-2 (SEE N93-14288 04-91)
Computer Science
Asymmetry, Atmospheric Circulation, Atmospheric General Circulation Models, Atmospheric Models, Thermosphere, Venus Atmosphere, Venus Surface, Gravity Waves, Internal Waves, Pioneer Venus 1 Spacecraft, Radiative Transfer, Signatures, Ultraviolet Spectrometers
Scientific paper
Our current understanding of the global structure and dynamics of the Venus thermosphere is embodied in models such as the Venus Thermospheric General Circulation Model (VTGCM) and empirical composition models such as VIRA and VTS3. We have completed an analysis of ultraviolet images of Venus at 130 nm acquired by the Pioneer Venus Orbiter Ultraviolet Spectrometer (PVOUVS). We have examined 97 images spanning the 10-year period between 1980 and 1990, and have developed a technique for global radiative transfer modeling with which we create synthetic models of each image analyzed. We have developed a hypothesis for understanding the persistent local-time asymmetry observed as a signature of vertically propagating internal gravity waves interacting with the thermospheric SS-AS circulation. This hypothesis is presented.
Alexander Michael J.
Bougher Stephen W.
Stewart Ian F. A.
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