The influence of thermospheric winds on exospheric hydrogen on Venus |
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| Authors: | RRichard Hodges Brian A Tinsley |
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| Institution: | University of Texas at Dallas, P.O. Box 688, Richardson, Texas 75080, USA |
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| Abstract: | Monte Carlo models of the distribution of atomic hydrogen in the exosphere of Venus were computed which simulate the effects of thermospheric winds and the production of a “hot” hydrogen component by charge exchange of H+ and H and O in the exosphere, as well as classic exospheric processes. A thermosphere wind system that is approximated by a retrograde rotating component with equatorial speed of 100 m/sec superimposed on a diurnal solar tide with cross-terminator day-to-night winds of 200 m/sec is shown to be compatible with the thermospheric hydrogen distribution deduced from Pioneer Venus orbiter measurements. |
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