Comparison of microwave and infrared measurements of Martian atmospheric temperatures - Implications for short-term climate variability

Details Comparison of microwave and infrared measurements of Martian atmospheric temperatures - Implications for short-term climate variability Comparison of microwave and infrared measurements of Martian atmospheric temperatures - Implications for short-term climate variability

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.5911r&link_type=abstract

Journal of Geophysical Research, vol. 103, p. 5911

Physics

16

Temperature Measurement, Mars Atmosphere, Atmospheric Temperature, Climate Change, Viking Orbiter Spacecraft, Infrared Detectors, Microwave Sensors, Thermal Mapping, Mariner 9 Space Probe

Scientific paper

This paper presents the first comparison of simultaneous Viking infrared and ground-based microwave measurements of the Martian atmosphere. The data are examined in order to investigate a 15-20 K difference between microwave and Viking measurements of mid-level (10-40 km) air temperature. These data have been used by Clancy et al. (1990) to suggest that the Martian atmosphere is generally cooler and clearer than observed during the Viking era. This study suggests that the 15-20 K difference, which is most apparent during the non-'dust-storm' seasons, is not a real temperature difference, but instead results from a disagreement between the measurement techniques. The existence of this instrumental bias implies that the Martian climate has not substantially changed since the Viking era.

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