Abstract
view Abstract Citations (1) References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Abundance and Temperature of CO2 in the Martian Atmosphere. Belton, Michael J. S. ; Hunten, Donald M. Abstract Spectrophotometric observations of the R branch of the weak v1t2v2Q3v2 band of CO2 at 1.05 ~ in the spectrum of Mars yield an atmospheric abundance of 69-~26 (atm m) STP Taken together with the results of Gray's (1965) analysis of the strong bands of CO2 at 2.0 ~, this abundance indicates a surface pressure in the range of 3-13 mbar. Individual lines in the branch have been resolved up to J=28 and their intensity distribution indicates a rotational temperature of 194 0K. The head region alone yields a somewhat higher temperature of 210 0K. The observations were also analyzed with the help of a polytropic model atmosphere. The most satisfactory fit to the data was found for a mean surface temperature of 270 0K over the illuminated disk and a lapse rate of 5 K/km. A brief discussion of the compatibility of the present observations with others that are available concludes the paper. Publication: The Astronomical Journal Pub Date: February 1966 DOI: 10.1086/110064 Bibcode: 1966AJ.....71R.156B full text sources ADS |
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