Oxides of nitrogen and the clouds of Venus

Computer Science – Sound

Scientific paper

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Atmospheric Chemistry, Atmospheric Composition, Lightning, Nitric Oxide, Nitrogen Dioxide, Venus Atmosphere, Venus Clouds, Catalysts, Pioneer Venus Spacecraft, Sulfur Compounds, Sulfuric Acid, Venus Probes, Venus, Clouds, Nitrogen, Oxides, Atmosphere, Lightning, Sulfuric Acid, Acids, Pioneer Venus Sounder Probe, Aerosols, Layering, Convection, Venera 11, Abundance, Photolysis, Nitrosyl Sulfuric Acid

Scientific paper

Nitric oxide may be produced in the atmosphere of Venus by lightning storms in the clouds. The paper suggests that the odd nitrogen thus formed may play an important part in the chemistry of the clouds. Specifically, production rates for NO2 in the limiting case of high NO concentrations are estimated. If the NO density is high, it is suggested that NO2 may catalyse the production of sulfuric acid aerosol from sulfur dioxide and water vapor, and may also form nitrogen-sulfur compounds such as nitrosyl sulfuric acid, NOHSO4. The large partricles seen by the Pioneer Venus sounder probe may contain considerable quantities of NOHSO4. If this is the case, odd nitrogen must be present in the atmosphere in at least a parts-per-million mixing ratio.

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