Circulation of the atmosphere from the surface to 100 km |
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Authors: | VV Kerzhanovich SS Limaye |
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Institution: | 1. Space Research Institute, U.S.S.R. Academy of Sciences, Moscow 117810, U.S.S.R.;2. Space Science and Engineering Center, University of Wisconsin-Madison, Madison, WI 53706, U.S.A. |
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Abstract: | A reference model of the atmospheric circulation on Venus based on available observations is presented. The reference atmosphere has the following main features: (i) the entire atmosphere below 85 km moves predominantly from east to west in the planet's reference system (in the same direction as the rotation of the solid planet itself) with the possible exception of the lowest 10 km where velocities are low, (ii) a jet is present near the cloud-top level at 45° latitude in both hemispheres, with a magnitude of approximately 100 ms?1, (iii) a weak meridional (north-south component) flow directed towards either pole is superimposed on the zonal (east-west) motion at cloud-top level (about 68 km) altitudes, and, (iv) eddies or wave motions are present in the atmosphere, with amplitudes of less than 15 ms?1 in the upper atmosphere. |
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