Zonal superrotation above Venus' cloud base induced by the semidiurnal tide and the mean meridional circulation

Details Zonal superrotation above Venus' cloud base induced by the semidiurnal tide and the mean meridional circulation Zonal superrotation above Venus' cloud base induced by the semidiurnal tide and the mean meridional circulation

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jats...47.1894h&link_type=abstract

Journal of the Atmospheric Sciences (ISSN 0022-4928), vol. 47, Aug. 1, 1990, p. 1894-1901.

Physics

11

Atmospheric Circulation, Tides, Venus Atmosphere, Venus Clouds, Zonal Flow (Meteorology), Diurnal Variations, Meridional Flow, Planetary Meteorology, Solar Planetary Interactions, Venus, Tidal Effects, Circulation, Rotation, Atmosphere, Structure, Wind, Zones, Velocity, Altitude, Models, Solar Effects, Acceleration, Heating, Equatorial Regions, Eddy Flow

Scientific paper

The equilibrium zonal wind structure resulting from the interaction of the semidiurnal tide and the mean meridional circulation driven by the zonally averaged solar heating above the Venus cloud base were calculated. The results show that the tidal mechanism proposed by Fels and Lindzen (1974) can account for a substantial fraction (and possibly all) of the increase of the equatorial wind speed above the cloud base. Above the cloud tops, tidal deceleration may be too small to produce the zonal wind decrease with height inferred from thermal data. Tidal forcing does not explain the superrotation below the clouds, and additional eddy sources are needed to account for the zonal wind structure at mid and high latitudes.

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