Calculation of the solar gravitational torque on the Venus thermal tide

Details Calculation of the solar gravitational torque on the Venus thermal tide Calculation of the solar gravitational torque on the Venus thermal tide

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....97..265t&link_type=abstract

Astronomy and Astrophysics, vol. 97, no. 2, Apr. 1981, p. 265-268.

Astronomy and Astrophysics

Astrophysics

3

Atmospheric Tides, Gravitational Effects, Solar Gravitation, Torque, Venus Atmosphere, Density Distribution, Momentum Transfer, Solar Heating, Venus Clouds, Venus, Thermal Properties, Tides, Gravity Effects, Torques, Velocity, Atmosphere, Hypotheses, Mathematical Models, Temperatures, Density, Winds, Layers, Angular Momentum

Scientific paper

The momentum received by the atmosphere of Venus through the action of the sun's gravitational torque on the densities variation induced by the thermal tide is analyzed. Thermal tides, it is assumed, are essentially generated inside and above the cloud layer by the day-to-night temperature variations in an atmosphere rotating around the planet in four terrestrial days, and these variations are minimized in the lower layer by the greenhouse effect. Results show that the input momentum is insufficient to allow a resonance of Venus with the earth orbit. If the momentum deposited in the high layers propagates downward, the vertical velocity gradient of the zonal wind in stable layers can be derived. Results of the study coincide with existing data, however, the zonal wind velocity in lower layers is found to be much larger than present observations indicate.

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