Computer Science
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jats...43.3273c&link_type=abstract
Journal of the Atmospheric Sciences (ISSN 0022-4928), vol. 43, Dec. 15, 1986, p. 3273-3278. Research sponsored by Aerospace Corp
Computer Science
5
Atmospheric Circulation, Atmospheric Tides, Venus Atmosphere, Lower Atmosphere, Momentum Transfer, Zonal Flow (Meteorology)
Scientific paper
A linearized planetary scale wave model is used to investigate the effects of thermal and mechanical damping on atmospheric tides. When the damping rate is comparable to the frequency of solar diurnal forcing the circulation consists of three parts: a classical vertically propagating 'atmospheric tide' in the upper atmosphere, a simple thermally direct subsolar-to-antisolar circulation or 'Halley cell' in most of the lower atmosphere, and finally, a reversed 'anti-Halley cell' near the surface. The near-surface circulation produces horizontal divergence near the subsolar point. While tides are a frequently encountered phenomenon (Venus, earth, and Mars), there is so far no observational evidence of a Halley circulation in any planetary atmosphere. A subsolar-antisolar circulation might be possible in Venus' slowly rotating lower atmosphere if the mechanical dissipation time scale is of the order of or less than a Venusian day. Such a circulation could be a factor in maintaining the superrotation of Venus' upper atmosphere.
Covey Curtis
Schubert Gerald
Walterscheid Richard L.
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