Physics
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.8141p&link_type=abstract
Journal of Geophysical Research, vol. 85, Dec. 30, 1980, p. 8141-8150.
Physics
21
Venus, Atmosphere, Distribution, Source, Ultraviolet, Absorption, Pvo Mission, Pvm Mission, Spacecraft Observations, Photometry, Theoretical Studies, Aerosols, Gases, Sulfur Dioxide, Optical Properties, Concentration, Depth, Wavelengths, Chlorine, Earth-Based Observations, Clouds, Mixing Ratio, Models, Simulations
Scientific paper
The model predictions were compared with the Pioneer Venus probes and orbiter to determine the composition of the UV absorbing materials. The simulations were carried out with radiative transfer codes which included spacecraft constraints on the aerosol and gas characteristics in the Venus atmosphere; gaseous SO2 (a source of opacity at the wavelengths below 0.32 microns), and a second absorber (which dominates above 0.32 microns) were required. The UV contrast variations are due to the optical depth changes in the upper haze layer producing brightness variations between equatorial and polar areas, and to differences in the depth over which the second UV absorber is depleted in the highest portion of the main clouds.
Boese R.
Eposito L.
Pollack James B.
Ragent Boris
Tomasko Martin
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