Abstract
The depletion of stratospheric ozone at high latitudes is caused by gas-phase catalytic cycles involving active chlorine compounds produced through heterogeneous chemical reactions involving HCl. In this Letter, results aimed at understanding the activation of chlorine on ice cloud particle surfaces are presented. We focus specifically on HCl interacting with the ice surface prior to reaction. We conclude that, in regions with a low surface density of dangling OH groups, HCl may be either ionically or molecularly adsorbed, but in regions with a high surface density of dangling OH groups, HCl is ionically adsorbed.
Original language | English (US) |
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Pages (from-to) | 285-292 |
Number of pages | 8 |
Journal | Chemical Physics Letters |
Volume | 348 |
Issue number | 3-4 |
DOIs | |
State | Published - Nov 9 2001 |
Funding
This work was partially supported by the NASA Upper Atmospheric Research Program (Grant No. NAG5-8887). Y.A.M. acknowledges partial support from the MIT Center for Global Change Sciences. F.M.G. acknowledges support from the NOAA Postdoctoral Program in Climate and Global Change, administered by the University Corporation for Atmospheric Research. This work was also partially supported by the National Computational Science Alliance (Proposal No. CTS990016Nr00 and CHE010020N) and utilized the NCSA SGI/CRAY Origin2000.
ASJC Scopus subject areas
- General Physics and Astronomy
- Physical and Theoretical Chemistry