Atmospheric effects on the remote determination of thermal inertia on Mars

Details Atmospheric effects on the remote determination of thermal inertia on Mars Atmospheric effects on the remote determination of thermal inertia on Mars

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...90..187h&link_type=abstract

Icarus (ISSN 0019-1035), vol. 90, April 1991, p. 187-204.

Computer Science

88

Brightness Temperature, Mars Atmosphere, Mars Surface, Surface Temperature, Atmospheric Effects, Carbon Dioxide Concentration, Greenhouse Effect, Infrared Radiation, Radiative Transfer, Mars, Atmosphere, Remote Sensing, Thermal Properties, Inertia, Surface, Temperature, Infrared, Brightness, Comparisons, Models, Dust, Flux, Theoretical Studies, Carbon Dioxide, Absorption, Insolation, Particles, Emissions, Radiative Effects, Soil, Calculations, Emissivity, Cooling, Optical Properties, Greenhouse Effect, Diur

Scientific paper

Measurements of the IR brightness temperature at the Martian surface at many different times of day are presently compared with temperatures predicted by thermal models which allow sunlight to reach the surface unattenuated, in order to determine the thermal inertia of the uppermost 1-10 cm of the Martian surface. The consequences of the assumptions made are assessed in view of results from a different thermal model which invokes radiation-transfer through a dusty CO2 atmosphere, as well as sensible heat-exchange with the surface. Smaller thermal inertias imply smaller particle sizes; the results obtained suggest that low thermal-inertia regions consist of 5-micron, rather than 50-micron, particle sizes.

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