Other
Scientific paper
May 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976kosis..14..476i&link_type=abstract
Kosmicheskie Issledovaniia, vol. 14, May-June 1976, p. 476-478. In Russian.
Other
1
Atmospheric Models, Atmospheric Temperature, Diurnal Variations, Mars Atmosphere, Thermosphere, Atmospheric Density, Carbon Dioxide, Hydrodynamic Equations, Temperature Distribution, Two Dimensional Models, Vertical Distribution, Wind Profiles
Scientific paper
A two-dimensional model of diurnal temperature, density, and wind variations in the equatorial thermosphere of Mars is constructed by numerically integrating a system of hydrodynamic equations with absorption of solar UV radiation as a heat source and atmospheric IR emission together with heat removal by thermal conduction in lower atmospheric layers as a heat sink. The model is computed for a thermosphere of pure CO2; in one variant, a 25% argon abundance is assumed. Vertical temperature and density profiles are plotted for the pure CO2 thermosphere. It is found that the mesopause is located at heights of 90 to 100 km, the temperature there is about 150 K, and the temperature profile is roughly isothermal at heights greater than 170 km on the dayside and 140 km on the nightside. The density at 200 km is shown to change by a factor of five over one day, while the temperature at this height varies from 280 to 430 K.
Izakov Mai N.
Morozov S. K.
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