Albedo of the south pole on Mars determined by topographic forcing of atmosphere dynamics

Anthony Colaprete (), Jeffrey R. Barnes, Robert M. Haberle, Jeffery L. Hollingsworth, Hugh H. Kieffer and Timothy N. Titus
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Anthony Colaprete: Moffett Field
Jeffrey R. Barnes: Oregon State University
Robert M. Haberle: Moffett Field
Jeffery L. Hollingsworth: NASA Ames Research Center, Moffett Field
Hugh H. Kieffer: Astrogeology Team
Timothy N. Titus: Astrogeology Team

Nature, 2005, vol. 435, issue 7039, 184-188

Abstract: If the cap fits... Why is the south polar cap of Mars not at the geographic south pole? Since the early observations of Mars in the nineteenth century, the peculiar offset of the martian south polar perennial cap of frozen carbon dioxide, and the existence of a dark ‘cryptic’ region seen in the adjacent hemisphere have puzzled planetary scientists. A combination of observations and climate modelling now suggests that the offset of the cap and creation of the cryptic region are the result of two very distinct climate regimes generated by atmospheric flow interacting with the southernmost extent of the giant volcano Tharsis, and the large impact basins Argyre and Hellas.

Date: 2005
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DOI: 10.1038/nature03561

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