Radio occultation measurements of sulfuric acid in the atmosphere of Venus.

Details Radio occultation measurements of sulfuric acid in the atmosphere of Venus. Radio occultation measurements of sulfuric acid in the atmosphere of Venus.

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cosre..28..239m&link_type=abstract

Cosmic Res., Vol. 28, No. 2, p. 239 - 243

Physics

Venus Atmosphere: Sulfur

Scientific paper

Results are presented of the determination of the absorption of centimeter radio waves in the atmosphere of Venus by radio occultation using the satellites Venera-15 and -16. The integral absorption of radio waves in the λ = 5 cm band at height 61 km attains -2.4 dB; at height 55 km it equals -0.6 dB; and at height 47 km it reaches -5.8 dB. Data are presented on the absorption of radio waves in the λ = 5 cm and λ = 13 cm bands for heights 40 -70 km, obtained using the satellites Pioneer-Venus and Venera-15 and -16. The absorption of radio waves is shown to be due to sulfuric acid vapor. The distribution of sulfuric acid vapor at heights 39 - 53 km is found. At heights 39 - 44 km sulfuric acid vapor concentration varies little with height, and equals 37±7 ppm. For higher altitudes above the surface of Venus from 45 to 53 km, the concentration of H2SO4 vapor decreases with height, and equals 20±5 ppm at 47 km.

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