Physics
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994lpi....25..747k&link_type=abstract
In Lunar and Planetary Inst., The Twenty-Fifth Lunar and Planetary Science Conference. Part 2: H-O p 747-748 (SEE N94-36136 11-9
Physics
Boundaries, Cloud Cover, Photochemical Reactions, Sulfuric Acid, Troposphere, Venus Clouds, Water Vapor, Aerosols, Diffusion, Mixing Ratios, Pioneer Venus Spacecraft
Scientific paper
A coupled problem of diffusion and condensation is solved for the H2SO4-H2O system in Venus' cloud layer. The position of the lower cloud boundary, profiles of the H2O and H2SO vapor mixing ratios, and of the H2O/H2SO4 ratio of sulfuric acid aerosol and its flux are calculated as functions of the column photochemical production rate of sulfuric acid. Variations of the lower cloud boundary are considered. Our basic model, which is constrained to yield fH2O(30km) = 30 ppm, predicts the position of the lower cloud boundary at 48.4 km coinciding with the mean Pioneer Venus value, the peak H2SO4 mixing ratio of 5.4 ppm, and the H2SO4 production rate phiH2SO4 = 2.2 x 1012 cm-2s-1.
Krasnopolsky Vladimir A.
Pollack James B.
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