The aeronomy of the upper atmosphere of Venus

Details The aeronomy of the upper atmosphere of Venus The aeronomy of the upper atmosphere of Venus

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...24..148l&link_type=abstract

Icarus, vol. 24, Feb. 1975, p. 148-156.

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Aeronomy, Atmospheric Composition, Gas Dissociation, Jeans Theory, Upper Atmosphere, Venus Atmosphere, Airglow, Atmospheric Chemistry, Atmospheric Models, Atomic Excitations, Atomic Spectra, Hydrogen Atoms, Mixing Length Flow Theory, Oxygen Spectra, Venus Clouds

Scientific paper

It is shown that rather tight constraints can be placed on the mixing ratio of atomic oxygen in the upper atmosphere of Venus, as well as that of CO and molecular oxygen, unless extraordinary processes which lead to a very large efflux of hydrogen from the planet are postulated. The analysis conducted is similar to the investigation carried out for the earth by Liu and Donahue (1974). If Jeans escape provides the main escape mode for hydrogen from Venus, the concentration ratio of atomic oxygen to carbon dioxide at 130 km is much less than 1% and some mechanism other than resonance scattering plus photoelectron excitation must account for the oxygen airglow.

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