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Accession Number N20120011573
Title Cloud Greenhouse Effect on Mars: Significant Climate Change in the Recent Past.
Publication Date Mar 2012
Media Count 3p
Personal Author F. Montmessin J. R. Schaeffer M. A. Kahre R. J. Phillips R. M. Haberle
Abstract The large variations in Mars orbit parameters are known to be significant drivers of climate change on the Red planet. The recent discovery of buried CO2 ice at the South Pole adds another dimension to climate change studies. In this paper we present results from the Ames GCM that show within the past million years it is possible that clouds from a greatly intensified Martian hydrological cycle may have produced a greenhouse effect strong enough to raise global mean surface temperatures by several tens of degrees Kelvin. It is made possible by the ability of the Martian atmosphere to transport water to high altitudes where cold clouds form, reduce the outgoing longwave radiation, and drive up surface temperatures to maintain global energy balance.
Keywords Atmospheric models
Carbon dioxide
Climate change
Greenhouse effect
Hydrological cycle
Long wave radiation
Mars atmosphere
Planetary meteorology

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 54 - Astronomy & Astrophysics
84B - Extraterrestial Exploration
Corporate Author National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center.
Document Type Conference proceedings
Title Note N/A
NTIS Issue Number 1301
Contract Number NNA08AF13C

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