Measurement of the Venus lower atmosphere composition - A comparison of results

Details Measurement of the Venus lower atmosphere composition - A comparison of results Measurement of the Venus lower atmosphere composition - A comparison of results

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.7871h&link_type=abstract

Journal of Geophysical Research, vol. 85, Dec. 30, 1980, p. 7871-7881. Bundesministerium für Forschung und Technologie

Physics

10

Venus, Atmosphere, Composition, Comparisons, Spacecraft Observations, Chemistry, Gases, Oxygen, Mixing, Carbon Monoxide, Altitude, Clouds, Water Vapor, Abundance, Pvm Mission, Venera Missions, Carbonyl Sulfide

Scientific paper

The data from seven gas analyzer measurements obtained from Pioneer Venus and the Venera 11 and 12 spacecraft are compared, and the chemical composition of the atmosphere from approximately 700 km to the surface is examined. In and near the clouds, the O2 mixing ratio is a few ten ppm, and the CO mixing ratio is 20-30 ppm. The existence of COS in the lower part of the atmosphere is doubtful, and its mixing ratio at higher altitudes does not exceed a few ppm. SO2 may exist below the clouds at a mixing ratio of about 100 ppm, whereas in the clouds it is less than 10 ppm. A discrepancy in the data still exists for the measurement of the water vapor abundance.

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