Venus cloud properties - Infrared opacity and mass mixing ratio

Details Venus cloud properties - Infrared opacity and mass mixing ratio Venus cloud properties - Infrared opacity and mass mixing ratio

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...25...49s&link_type=abstract

Icarus, vol. 25, May 1975, p. 49-63.

Computer Science

5

Atmospheric Models, Infrared Spectra, Optical Properties, Venus Clouds, Brightness Temperature, Cloud Cover, Mariner 5 Space Probe, Opacity, Particle Density (Concentration), Radiative Transfer, Sulfuric Acid

Scientific paper

By using the Mariner 5 temperature profile and a homogeneous cloud model, and assuming that CO2 and cloud particles are the only opacity sources, the wavelength dependence of the Venus cloud opacity is inferred from the infrared spectrum of the planet between 450 and 1250 per cm. Volume extinction coefficients varying from 0.000005 to 0.000015 per cm, depending on the wavelength, are determined at the tropopause level of 6110 km. By using all available data, a cloud mass mixing ratio of approximately 0.000005 and a particle concentration of about 900 particles per cu cm at this level are also inferred. The derived cloud opacity compares favorably with that expected for a haze of droplets of a 75% aqueous solution of sulfuric acid.

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