Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...10632903j&link_type=abstract
Journal of Geophysical Research, Volume 106, Issue E12, p. 32903-32914
Physics
6
Atmospheric Composition And Structure, Meteorology And Atmospheric Dynamics: General Circulation, Meteorology And Atmospheric Dynamics: Paleoclimatology, Planetology: Solid Surface Planets: Atmospheres-Composition And Chemistry
Scientific paper
Global climate model simulations using high-obliquity (70°), higher CO2 and CH4 but reduced O3 concentrations produce warm climate conditions for Archean boundary conditions (reduced solar forcing). Solar radiation under high-obliquity is distribution in such a way as to warm high latitudes and cool low-latitudes. Global mean air temperatures of approximately 280°K are found with a 25% reduction in the solar forcing, 4760 ppmv CO2 and 25 ppmv CH4. High-obliquity could also explain why polar oceans on Mars may have occurred in its history. A substantial increase in the amount of insolation is accounted for if Mars had an obliquity of 70°.
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