Other
Scientific paper
Oct 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...56..165d&link_type=abstract
Icarus (ISSN 0019-1035), vol. 56, Oct. 1983, p. 165-175.
Other
11
Atmospheric Tides, Planetary Boundary Layer, Venus Atmosphere, Diurnal Variations, Insolation, Solar Heating, Torque, Viscosity, Wind Velocity, Venus, Atmosphere, Tides, Boundary Layers, Heating, Diurnal Varitations, Surface, Temperature, Wind, Pressure, Asymmetry, Mass, Distribution, Rotation, Retrograde, Viscosity, Torques, Friction, Velocity, Diagrams, Aeolian Effects, Mathematical Models, Calculations
Scientific paper
Diurnal solar heating of Venus' surface produces variable temperatures, winds, and pressure gradients within a shallow layer at the bottom of the atmosphere. The corresponding asymmetric mass distribution experiences a tidal torque tending to maintain Venus' slow retrograde rotation. It is shown that including viscosity in the boundary layer does not materially affect the balance of torques. On the other hand, friction between the air and ground can reduce the predicted wind speeds from about 5 to about 1 m/sec in the lower atmosphere, more consistent with the observations from Venus landers and descent probes. Implications for aeolian activity on Venus' surface and for future missions are discussed.
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