The spectrum of Mars in the (1-0) vibrational band of CO

Details The spectrum of Mars in the (1-0) vibrational band of CO The spectrum of Mars in the (1-0) vibrational band of CO

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...261..647b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 261, no. 2, p. 647-657.

Astronomy and Astrophysics

Astrophysics

8

Astronomical Spectroscopy, Carbon Monoxide, Mars (Planet), Vibrational Spectra, Abundance, Emission Spectra, Fourier Transformation, Solar Radiation, Temperature Profiles

Scientific paper

High-resolution Fourier transform spectra of Mars have been recorded in April 1988 and March 1989, in the 4.7-micron range (2080-2180/cm). The data show absorption features of the strong 1-0 vibrational band of CO and its isotopes, (C-13)O, C(O-18), and (C-17)O, and are used to measure the CO abundance and the low atmosphere thermal profile. The isotope ratios appear to be telluric. The derived CO mixing ratio is 6 +0.6/-0.5 x 10 exp -4, and the thermal profile in March 1989 appears to be about 20 K warmer than the Viking descent measurements in the lower scale height. Both conclusions are in agreement with those inferred from millimeter-wave observations at the same period.

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