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Mass accommodation coefficient measurements for HNO3, HCl and N2O5 on water, ice and aqueous sulfuric acid droplet surfaces

Author
Zahniser, Mark
Published
May 1, 1988.
Physical Description
1 electronic document
Additional Creators
Watson, Lyn, Kolb, Charles, Davidovits, Paul, Worsnop, Douglas, Vandoren, Jane, and Jayne, John
Online Version

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Summary
Preliminary results are reported of the direct measurement of accommodation coefficients for HNO3, N2O5 and HCl on water drops, aqueous sulfuric acid drops and ice particles. The heterogeneous chemistry of these species together with ClONO2 has been implicated in the ozone depletion observed in the Antarctic stratosphere during the spring in the last eight years. The most plausible chemical mechanism involves the removal of nitrogen oxide species via condensation on ice particles in polar stratospheric clouds resulting in a increase in the active chlorine species responsible for the ozone depletion. The observation of low NO2 and high ClO densities in the Antarctic stratosphere last summer appear to be consistent with such a mechanism.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19890005167.
Accession ID: 89N14538.
NASA, Goddard Space Flight Center, Polar Ozone Workshop. Abstracts; p 98-100.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15692677