Atomic carbon in the atmosphere of Venus | Zendy

Fox J. L. | Zendy

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Atomic carbon in the atmosphere of Venus

Author(s) -

Fox J. L.

Publication year - 1982

Publication title -

journal of geophysical research: space physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.67

H-Index - 298

eISSN - 2156-2202

pISSN - 0148-0227

DOI - 10.1029/ja087ia11p09211

Subject(s) - venus , thermosphere , atomic carbon , photoionization , atmosphere of venus , carbon fibers , atmosphere (unit) , scattering , mixing ratio , atomic physics , atmospheric sciences , astrobiology , ionization , physics , materials science , chemistry , ion , ionosphere , analytical chemistry (journal) , meteorology , astronomy , optics , environmental chemistry , composite material , quantum mechanics , composite number

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 2.8×10 7 cm −3 near 150 km for an assumed O 2 mixing ratio of 1×10 −4 . 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 Å, 1657 Å, and 1931 Å. The computed C + densities are found to be in substantial agreement with those measured by Pioneer Venus.

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