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Adsorption of HO(x) on aerosol surfaces - Implications for the atmosphere of MarsThe 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).
Document ID
19930060267
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Anbar, A. D.
(California Inst. of Technology Pasadena, United States)
Leu, M.-T.
(JPL Pasadena, CA, United States)
Nair, H. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Yung, Y. L.
(California Inst. of Technology Pasadena, United States)
Date Acquired
August 16, 2013
Publication Date
June 25, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: E6
ISSN: 0148-0227
Subject Category
Lunar And Planetary Exploration
Accession Number
93A44264
Funding Number(s)
CONTRACT_GRANT: NAGW-2204
Distribution Limits
Public
Copyright
Other

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