Physics
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9810933a&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E6, p. 10,933-10,940.
Physics
13
Adsorption, Aerosols, Atmospheric Chemistry, Mars Atmosphere, Reaction Kinetics, Water, Carbon Dioxide, Carbon Monoxide, Oxidation, Mars, Adsorption, Aerosols, Atmosphere, Chemistry, Abundance, Model, Dust, Ice, Photochemistry, Parameters, Altitude, Depletion, Hydroxyl, Hydrogen Dioxide, Oh Radical, Carbon Monoxide, Oxidation, Comparison, Production Rate, Carbon Dioxide
Scientific paper
The potential impact of heterogeneous chemistry on the abundance and distribution of HO(x) in the Martian atmosphere is investigated using observational data on dust and ice aerosol distributions combined with an updated photochemical model. Critical parameters include the altitude distributions of aerosols and the surface loss coefficients of HO2 on dust and ice in the lower atmosphere and of H on ice above 40 km. Results of calculations indicate that adsorption of HO2 on dust, or ice near 30 km, can deplete OH abundances in the lower atmosphere by 10 percent or more and that the adsorption of H on ice at 50 km can result in even larger OH depletions (this effect is localized to altitudes greater than 40 km, where CO oxidation is relatively unimportant).
Anbar Ariel D.
Leu Ming-Taun
Nair H. A.
Yung Yuk L.
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