Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...136..319k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 136, no. 2, July 1984, p. 319-325.
Astronomy and Astrophysics
Astronomy
17
Astronomical Spectroscopy, Atmospheric Composition, Infrared Astronomy, Mars Atmosphere, Spectral Line Width, Carbon Dioxide Concentration, Nonequilibrium Thermodynamics, Optical Heterodyning, Planetary Radiation, Mars, Atmosphere, Spectroscopy, Atmosphere, Carbon Dioxide, Altitude, Kinetics, Rotation, Thermal Properties, Temperature, Emissions, Intensity, Models, Data, Spectra
Scientific paper
During Mars opposition 1982 the planetary CO2 atmosphere has been investigated using a 10 μm-heterodyne spectrometer (spectral resolution λ/Δλ = 6×106) in the Cassegrain focus of a 2.2 m telescope. The spatial resolution on Mars is 1000 km. For the altitude range 50 - 90 km kinetic and rotational temperatures are derived (T ≡ 100K), much lower than values in the recommended reference atmosphere (T ≡ 140K). The measurements indicate annual variability of the atmospheric temperature. For the non-LTE emission lines no increase of the intensity from center to limb is observed, thus placing constraints on models for the emission process.
Drapatz Siegfried
Kaufl Hans Ulrich
Rothermal H.
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