Computer Science
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975kosis..13..404i&link_type=abstract
Kosmicheskie Issledovaniia, vol. 13, May-June 1975, p. 404-414. In Russian.
Computer Science
2
Atmospheric Circulation, Atmospheric Temperature, Solar Activity Effects, Thermosphere, Venus Atmosphere, Wind Velocity, Atmospheric Density, Molecular Absorption, Solar Radiation, Vertical Motion
Scientific paper
Temperature, density, and velocity distributions of large-scale motions in the Venusian thermosphere are calculated with allowance for their relative influence at heights between 110 and 120 km during moderately high solar activity. It is shown that day-side absorption of solar radiation causes global circulation with vertical upward motions on the day side and downward motions on the dark side. The speeds of the vertical movements are a few meters per second, while the horizontal speeds can be as high as several hundred meters per second in the direction of the subsolar point to the antisolar point in the upper thermosphere. The temperature distribution is characterized by a day to night temperature drop from approximately 800 K at the subsolar point to 300 K at the antisolar point. The computed temperatures are close to the experimental findings, if allowance is made for the dependence of temperature on solar activity.
Izakov Mai N.
Morozov S. K.
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