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The Martian paleoclimate and enhanced atmospheric carbon dioxideCurrent evidence indicates that the Martian surface is abundant with water presently in the form of ice, while the atmosphere was at one time more massive with a past surface pressure of as much as 1 atm of CO2. In an attempt to understand the Martian paleoclimate, a past CO2-H2O greenhouse was modeled and global temperatures which are consistent with an earlier presence of liquid surface water are found in agreement with the extensive evidence for past fluvial erosion. An important aspect of the CO2-H2O greenhouse model is the detailed inclusion of CO2 hot bands. For a surface pressure of 1 atm of CO2, the present greenhouse model predicts a global mean surface temperature of 294 K, but if the hot bands are excluded, a surface temperature of only 250 K is achieved.
Document ID
19800037594
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Cess, R. D.
(State Univ. of New York Stony Brook, NY, United States)
Owen, T.
(New York, State University Stony Brook, N.Y., United States)
Ramanathan, V.
(National Center for Atmospheric Research Boulder, Colo., United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Publication Information
Publication: Icarus
Volume: 41
Subject Category
Lunar And Planetary Exploration
Accession Number
80A21764
Funding Number(s)
CONTRACT_GRANT: NGR-33-015-141
CONTRACT_GRANT: NAS1-10493
CONTRACT_GRANT: NSF ENG-76-82547
Distribution Limits
Public
Copyright
Other

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