Radiation transfer in the 4.3-micron CO2 band and the 4.7-micron CO band in the atmospheres of Venus and Mars with violation of LTE - Populations of vibrational states

Details Radiation transfer in the 4.3-micron CO2 band and the 4.7-micron CO band in the atmospheres of Venus and Mars with violation of LTE - Populations of vibrational states Radiation transfer in the 4.3-micron CO2 band and the 4.7-micron CO band in the atmospheres of Venus and Mars with violation of LTE - Populations of vibrational states

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985azh....62..719s&link_type=abstract

(Astronomicheskii Zhurnal, vol. 62, July-Aug. 1985, p. 719-730) Soviet Astronomy (ISSN 0038-5301), vol. 29, July-Aug. 1985, p. 4

Astronomy and Astrophysics

Astronomy

3

Carbon Dioxide, Carbon Monoxide, Mars Atmosphere, Radiative Transfer, Venus Atmosphere, Vibrational Spectra, Atmospheric Models, Chemical Composition, Energy Transfer, Infrared Spectra, Molecular Energy Levels

Scientific paper

For a plane model of the atmospheres of Venus and Mars an exact solution of the problem of radiation transfer in the 4.3 μm CO2 and 4.7 μm CO bands has been obtained. A multi-level system of vibrational states of the CO2 and CO molecules excited by the absorption of solar radiation in the infrared bands of these molecules has been considered. The capture of vibrational photons leads to the appearance of local maxima in the diurnal and nocturnal vertical profiles of the vibrational temperature of the states CO2 (00°1) and CO (1). The influence on the population of the states of the V-V energy exchange between isotopical modifications of the CO2 molecule and between levels disturbed by the Fermi resonance has been examined. For the natural laser in the 10 μm CO2 band the amplification coefficients have been estimated. The inverted population of the 00°1 state exists permanently in the daytime atmosphere of Mars; on Venus it apparently appears only when internal gravity waves propagate in the atmosphere.

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