Composition of the Venus lower atmosphere from the Pioneer Venus mass spectrometer

Details Composition of the Venus lower atmosphere from the Pioneer Venus mass spectrometer Composition of the Venus lower atmosphere from the Pioneer Venus mass spectrometer

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.7882h&link_type=abstract

Journal of Geophysical Research, vol. 85, Dec. 30, 1980, p. 7882-7890. Research supported by the Max-Planck-Institut für Kernph

Physics

27

Venus, Composition, Atmosphere, Pvm Mission, Carbon Monoxide, Nitrogen, Spacecraft Observations, Carbonyl Sulfide, Water Vapor, Gases, Argon, Experiments, Neon, Isotopic Ratios, Volatiles, Laboratory Studies, Procedure, Bnms Instrument

Scientific paper

Pioneer Venus mass spectrometer data show the lower atmosphere of Venus to be primarily composed of CO2 and N2, with the latter being on the order of 3% by mass. Below the clouds there are up to 100 ppm of water vapor, and 500 ppm of SO2 and COS. A large excess over terrestrial abundances of nonradiogenic argon and neon is found, and the total abundance of radiogenic argon is about one third of that on earth. The isotopic ratios of carbon, oxygen, and nonradiogenic argon resemble terrestrial values. Helium and ethane are also detected, and there is evidence for the presence of the reducing compound H2S.

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