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Venus : Observe it while it's hot !

Abstract : Venus' global-scale cloud and haze layers are composed of complexes of sulfuric acid (H2SO4) and water. Because the clouds play a critical role in Venus' energy balance and long-term climate evolution , accurate definition of their formation process is a high priority in Venus atmospheric studies. On a basic level it is understood that the H2SO4 clouds and haze form via the combination of SO3 and H2O, and SO3 forms via oxidation of SO2. Thus, sulfur-bearing and sulfur-oxidized species, such as SO2, SO, S, OCS, H2SO4, are key traces of Venus' H2SO4 cloud/haze formation process. However, the specific pathways (which may be chemical, micro-physical and/or dynamical) that balance the budget of sulfur (and oxidized sulfur) in Venus' atmosphere are ill-defined [1-3], as are the mechanisms that sustain the density of the clouds. As result, Venus' climate evolution is ill-defined, and understanding Venus' sulfur-budget is highlighted as an important Venus exploration target.
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Submitted on : Monday, April 4, 2016 - 2:34:47 PM
Last modification on : Tuesday, November 16, 2021 - 5:14:50 AM
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  • HAL Id : insu-01297540, version 1


Kandis Lea Jessup, Frank Mills, Sanjay Limaye, Emmanuel Marcq, Jean-Loup Bertaux, et al.. Venus : Observe it while it's hot !. International Venus Conference 2016, Apr 2016, Oxford, United Kingdom. ⟨insu-01297540⟩



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