Composition and structure of the atmosphere of Venus |
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| Authors: | J H Hoffman G M Keating H Niemann V Oyama J Pollack A Seiff A I Stewart U Von Zahn |
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| Institution: | (1) The University of Texas at Dallas, 75080 Richardson, Tex., USA;(2) NASA Langley Research Center, 23665 Va., Hampton, USA;(3) NASA Goddard Space Flight Center, 20771 Greenbelt, Md., USA;(4) NASA Ames Research Center, 94035 Mountain View, Calif., USA;(5) NASA Ames Research Center, 94035 Mountain View, Calif., USA;(6) NASA Ames Research Center, 94035 Mountain View, Calif., USA;(7) The University of Colorado, 80302 Boulder, Co., USA;(8) The University of Bonn, 5300 Bonn, Germany (FRG) |
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| Abstract: | Although in recent years much has been learned about the atmospheric composition and structure of Venus, there are many key questions which remain unanswered. The Pioneer Venus set of experiments is designed to provide information both individually and collectively to help understand and explain first of all the present state of the atmosphere (the composition and distribution in both the lower and upper parts, the state property profiles, the cloud compositions, the role of phase in the thermal structure, the planet's surface and interior composition, the high surface temperature, the stability of CO2, the ionosphere — its chemistry and thermal structure, the existence of superrotation, the response of the upper atmosphere to changes in solar EUV and the solar wind) and secondly the origin and evolution of the atmosphere. This paper discusses these questions and the degree to which the Pioneer Venus instruments will respond to them. |
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