Atomic carbon in the atmosphere of Venus

Details Atomic carbon in the atmosphere of Venus Atomic carbon in the atmosphere of Venus

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.9211f&link_type=abstract

Journal of Geophysical Research, vol. 87, No. 1, 1982, p. 9211-9216.

Physics

17

Atmospheric Composition, Carbon, Venus Atmosphere, Abundance, Photoionization, Planetary Composition, Resonance Scattering, Solar Activity Effects

Scientific paper

The densities of atomic carbon in the Venusian thermosphere are computed for a model which includes both chemistry and transport. The maximum density of C is 2.8 x 10 to the 7th per cu cm near 150 km for an assumed O2 mixing ratio of 0.0001. Photoionization of atomic carbon is found to be the major source of C(+) above 200 km, and resonance scattering of sunlight by atomic carbon may be the major source of the C I emissions at 1561 A, 1657 A, and 1931 A. The computed C(+) densities are found to be in substantial agreement with those measured by Pioneer Venus.

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