On the mechanisms of cooling of the nightside thermosphere of venus |
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| Authors: | BF Gordiets YuN Kulikov |
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| Institution: | 1. Lebedev Physical Institute, U.S.S.R. Academy of Sciences, Leninsky Prospect 53, Moscow 117901, U.S.S.R.;2. Keldysh Institute of Applied Mathematics, U.S.S.R. Academy of Sciences, Miusskaya sq. 4, Moscow 125047, U.S.S.R. |
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| Abstract: | The plausible mechanisms of cooling of the nightside Venus' thermosphere are analysed with the aid of the model of the atmospheric heat budget that incorporates, in addition to thermal conduction and IR radiation in the 15 μ band of CO2, heating and cooling due to global scale winds, eddy turbulence, and IR radiation in the rotational bands of H2O and CO, as well as the 63 μ line of atomic oxygen. The H2O mixing ratio and parameters of turbulence required for cooling of the thermosphere down to the observed low temperatures are evaluated. |
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