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Martian atmospheric photochemistry and composition during periods of low obliquityDuring periods of low obliquity, previous work has shown that martian CO2 partial pressures decreased to 0.1 mbar; CO2 partial pressures decreased to 0.02 mbar prior to the formation of the Tharsis bulge. The permanent polar caps act as a cold trap and projected global average water vapor abundances drop to possibly as low as 0.00001 precipitable micron. As a result, the odd hydrogen catalytic cycle would not be effective at recombining CO and O back into CO2, and as much as 0.12 mbar of CO and 0.06 mbar of O2 could exist. These increased abundances would radically affect surface oxidation, change the lower atmospheric thermal structure, and completely alter the upper atmosphere.
Document ID
19850047381
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lindner, B. L.
(Colorado Univ. Boulder, CO, United States)
Jakosky, B. M.
(Colorado, University Boulder, CO, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1985
Publication Information
Publication: Journal of Geophysical Research
Volume: 90
ISSN: 0148-0227
Subject Category
Lunar And Planetary Exploration
Accession Number
85A29532
Funding Number(s)
CONTRACT_GRANT: NAGW-552
CONTRACT_GRANT: NAGW-495
Distribution Limits
Public
Copyright
Other

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