The astronomical theory of climatic change on Mars

Details The astronomical theory of climatic change on Mars The astronomical theory of climatic change on Mars

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icar...44..552t&link_type=abstract

Icarus, vol. 44, Dec. 1980, p. 552-607.

Computer Science

228

Annual Variations, Atmospheric Models, Climate Change, Climatology, Mars Atmosphere, Solar Energy, Solar Orbits, Albedo, Atmospheric Pressure, Carbon Dioxide, Dust, Polar Caps, Water

Scientific paper

The response of Martian climate to changes in solar energy deposition caused by variations of the Martian orbit and obliquity is examined. A systematic study is presented of the seasonal cycles of carbon dioxide, water, and dust to provide a complete picture of the climate for various orbital configurations. A new theory for the formation of the polar laminae is developed on the basis of this systematic examination. For the present orbital configuration and climate of Mars, it is shown that regolith damping of the seasonal CO2 cycle is unlikely; the mean atmospheric pressure is probably in equilibrium with the regolith; the low albedo of the north H2O polar cap can be explained by an admixture of 85% ice and 15% dust; and the albedo of the polar caps and the polar heat budget are very sensitive to small variations in dust deposition.

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