Astronomy and Astrophysics – Astronomy
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...25...89r&link_type=abstract
Icarus, vol. 25, May 1975, p. 89-103.
Astronomy and Astrophysics
Astronomy
3
Atmospheric Circulation, Atmospheric Models, Stratosphere, Venus Atmosphere, Wind Velocity, Zonal Flow (Meteorology), Astronomical Models, Dynamic Models, Gravity Waves, Mathematical Models, Planetary Rotation
Scientific paper
A dynamic model is presented for the strong zonal circulation within the stratosphere of Venus which was observed by Mariner 10 and Venera. Rotational effects are neglected, a compressible and radiating atmosphere is considered, and diurnal radiative heating is shown to be negligible in the lower stratosphere (below 85 km). Analysis of the model indicates that propagating internal gravity waves generated by solar heating of the upper stratosphere may induce mean zonal velocities within the upper and lower stratosphere which would have a retrograde direction. The nonlinear equations of motion and energy are solved by an approximate analytical method to determine the magnitude of the zonal velocity, which is found to increase from zero at the tropopause to about 200 m/sec at the 85-km level. The calculated velocity near the UV cloud level compares favorably with the observed value of 100 m/sec.
Cess Robert D.
Ramanathan Veerabhadran
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