Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30m..18n&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 13, pp. 18-1, CiteID 1685, DOI 10.1029/2002GL016725
Physics
6
Atmospheric Composition And Structure: Planetary Atmospheres (5405, 5407, 5409, 5704, 5705, 5707), Global Change: Climate Dynamics (3309), Planetary Sciences: Atmospheres-Evolution, Planetology: Solar System Objects: Mars
Scientific paper
The obliquities of the terrestrial planets could have undergone large-amplitude fluctuations. Because the obliquity changes affect the latitudinal distribution of solar radiation, they may have played important roles in the climatic evolution of the planets. We have investigated the effects of obliquity changes on the climate of Mars-like planets with CO2 atmosphere by using a one-dimensional energy balance climate model. Our numerical results show that the obliquity changes would result in the drastic changes of atmospheric pressure (climate jumps) by runaway sublimation of permanent CO2 ice. We also found that given a small solar constant and large obliquity, ``ring-shaped'' regions with permanent CO2 ice forms at the mid-latitude.
Nakamura Takasumi
Tajika Eiichi
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