Self-Consistent Model of an Ozone Layer on Ancient Mars

Details Self-Consistent Model of an Ozone Layer on Ancient Mars Self-Consistent Model of an Ozone Layer on Ancient Mars

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.4501d&link_type=abstract

American Astronomical Society, DPS meeting #42, #45.01; Bulletin of the American Astronomical Society, Vol. 42, p.1047

Astronomy and Astrophysics

Astronomy

Scientific paper

When modeling thick, early Martian atmospheres, it is often assumed that the mixing ratios of CO2, O2, CO, and O3 were similar to those observed today. Even when photochemical models are used to determine the composition of past atmospheres, a temperature profile similar in form to that currently observed is often imposed as a simplification. However, neither of these may be accurate assumptions. A 1D line-by-line radiative-convective model coupled self-consistently with a simple photochemical model is presented here to explore the relaxation of these assumptions. A primary consequence is the possibility of a substantial O3 layer on ancient Mars. Areas of impact considered include the loss of H2O to space, an enhanced greenhouse effect, inhibition of CO2 condensation in the stratosphere, and reduced surface UV.

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