The global distribution of O3 on Mars

Details The global distribution of O3 on Mars The global distribution of O3 on Mars

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977p%26ss...25..839k&link_type=abstract

Planetary and Space Science, vol. 25, Sept. 1977, p. 839-857.

Computer Science

6

Atmospheric Composition, Mars Atmosphere, Ozone, Photochemical Reactions, Hydrogen Atoms, Hydroxyl Radicals, Mariner 9 Space Probe, Water Vapor

Scientific paper

Models are developed to describe the photochemistry of ozone on Mars. Catalytic reactions involving H, OH and HO2 play a major role at low latitudes where they ensure a vertical column density for O3 of less than 2 x 10 to the -4th cm atm. The source for odd hydrogen (H + OH + HO2) is relatively smaller at high latitudes in winter due to the small concentrations of H2O present there at that time. Odd hydrogen is also efficiently removed from the high-latitude winter atmosphere by condensation of H2O2. The role of catalytic chemistry is reduced accordingly and the vertical column density of O3 may be as large as 5.7 x 10 to the -3rd cm atm in accord with earlier observations carried out on Mariner 9.

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