The hemispherical asymmetry in the Martian polar caps

Details The hemispherical asymmetry in the Martian polar caps The hemispherical asymmetry in the Martian polar caps

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.3339l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E2, p. 3339-3344.

Physics

5

Mars Environment, Planetary Meteorology, Polar Caps, Annual Variations, Energy Budgets, Mathematical Models, Mars, Polar Cap, Polar Region, Symmetry, Carbon Dioxide, Ice, Models, Lifetime, Albedo, Clouds, Dust, Abundance, Seasonal Variation, Cycles, Procedure, Comparison, Simulation, Theoretical Studies, Energy, Surface, Formation, Dissipation, Frost, Emissivity, Opacity, Pressure, Radiation

Scientific paper

An energy balance model is used to study the behavior of CO2 ice on Mars. The effect of the solar zenith angle dependence of albedo is to lengthen CO2 ice lifetimes at the poles. Hemispherical asymmetries in cloud and dust abundance could result in the survival of seasonal CO2 ice through summer in the south and not in the north, in agreement with observations. CO2 ice observed in the summertime polar cap in the south could be of recent origin, although a permanent CO2 polar cap cannot be ruled out.

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