On the possible roles of gaseous sulfur and sulfanes in the atmosphere of Venus

Details On the possible roles of gaseous sulfur and sulfanes in the atmosphere of Venus On the possible roles of gaseous sulfur and sulfanes in the atmosphere of Venus

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..807p&link_type=abstract

Geophysical Research Letters, vol. 6, Oct. 1979, p. 807-810.

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9

Atmospheric Chemistry, Hydrogen Sulfide, Sulfur, Venus Atmosphere, Abundance, Exothermic Reactions, Lower Atmosphere, Photoabsorption, Photodissociation, Venus, Atmosphere, Sulfur, Gases, Sulfanes, Heating, Convection, Ultraviolet, Photodissociation, Concentrations, Oxidation, Altitude, Gas Chromatograph, Mass Spectrometer, Mixing, Water Vapor, Carbon Oxysulfide, Vertical Transport, Absorption, Photochemistry, Wavelengths, Chemistry, Reduction, Chemiluminescence

Scientific paper

The possible importance of gaseous elemental sulfur (particularly S2, S3 (thiozone), and S4) and sulfanes (H2S(n)) in the lower atmosphere of Venus is discussed. These species absorb visible and near-ultraviolet light. They can provide a local heating source which could drive convection in the 10-40-km altitude region and may also contribute to the ultraviolet markings on the planet. Photodissociation of these species will result in nonequilibrium concentrations of S and SH. This drives the lower atmosphere away from the thermochemical equilibrium species COS, H2S, and S(n) and toward SO2 and possibly H2S(n). Some H2O is also converted to O2. Exothermic reactions are also discussed which can provide local heating and light on the nightside.

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