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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Anthony Colaprete & Jeffrey R. Barnes & Robert M. Haberle & Jeffery L. Hollingsworth & Hugh H. Kieffer & Timothy N. Titus, 2005. "Albedo of the south pole on Mars determined by topographic forcing of atmosphere dynamics," Nature, Nature, vol. 435(7039), pages 184-188, May.
    • Handle: RePEc:nat:nature:v:435:y:2005:i:7039:d:10.1038_nature03561
    DOI: 10.1038/nature03561
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