Physics
Scientific paper
Jan 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7515566i&link_type=abstract
"Structure and dynamics of the thermosphere of Venus NASA Transl. into ENGLISH of "Struktura i Dinamika Termosfery Venergy'', Ac
Physics
Density Distribution, Temperature Distribution, Thermosphere, Velocity Distribution, Venus (Planet), Satellite Observation, Solar Activity, Solar Radiation
Scientific paper
The temperature, density, and velocity distributions of macroscopic motion in the Venus thermosphere are calculated, taking into account their interreactions of altitudes of 110 - 210 km for moderately high solar activity. It is shown that the absorption of solar radiation on the diurnal (daylight) side causes a global circulation with vertical upward motion on the diurnal side, and downward on the nocturnal side with velocities of several meters per second, and with horizontal velocities up to several hundred m/sec away from the subsolar point in the upper thermosphere. The temperature distribution in the Venus thermosphere is characterized by a temperature drop from day to night of 800 K at the subsolar point, to 300 K at the antisolar points. The calculated temperatures are close to the experimental ones if the variability of the temperature with solar activity is taken into account.
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