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A Cloud Greenhouse Effect on Mars: Significant Climate Change in the Recent PastThe 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.
Document ID
20120011573
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Haberle, Robert M. (NASA Ames Research Center Moffett Field, CA, United States)
Kahre, Melinda A. (NASA Ames Research Center Moffett Field, CA, United States)
Schaeffer, James R. (Dell Services Federal Government, Inc. Seabrook, MD, United States)
Montmessin, Frank (Centre National de la Recherche Scientifique Vitry, France)
Phillips, R J. (Southwest Research Inst. Boulder, CO, United States)
Date Acquired
August 26, 2013
Publication Date
March 19, 2012
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
ARC-E-DAA-TN4676
Meeting Information
Meeting: The 43rd Lunar and Planetary Science Conference
Location: The Woodlands, TX
Country: United States
Start Date: March 19, 2012
End Date: March 23, 2012
Sponsors: Lunar and Planetary Inst.
Funding Number(s)
WBS: WBS 811073.02.14.01.86
CONTRACT_GRANT: NNA10AM93A
CONTRACT_GRANT: NNA08AF13C
Distribution Limits
Public
Copyright
Public Use Permitted.

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