Effects of scattered solar radiation and absorption by SO2 on the photodissociation processes in the stratosphere of Venus

Details Effects of scattered solar radiation and absorption by SO2 on the photodissociation processes in the stratosphere of Venus Effects of scattered solar radiation and absorption by SO2 on the photodissociation processes in the stratosphere of Venus

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icar...44..640p&link_type=abstract

Icarus, vol. 44, Dec. 1980, p. 640-650. Research supported by the Centre National d'Etudes Spatiales and Institut National d'As

Astronomy and Astrophysics

Astronomy

4

Atmospheric Scattering, Photodissociation, Radiation Absorption, Solar Radiation, Stratosphere, Sulfur Dioxides, Venus Atmosphere, Albedo, Carbon Dioxide, Hydrogen Sulfide, Luminous Intensity, Ozone, Solar Flux

Scientific paper

In the Venusian stratosphere, the available luminous flux which locally produces the photodissociation processes at a given altitude may be divided into three parts: direct incoming downward flux, flux resulting from reflection on cloud surfaces, and flux resulting from molecular scattering. A relatively simple method has been used to calculate the relative importance of these three parts at altitudes between 65 and 100 km. It is shown that the extra contribution of the reflected and scattered fluxes to photodissociation processes cannot be neglected in the UV and visible regions. In the case of SO2, which presents an absorption band in the UV, the photodissociation coefficient is increased 30 per cent due to these effects. Calculations of the photodissociation coefficients of CO, O3, H2S, and SO2 are presented

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