Phys. Rev. Lett. 91, 058502 (2003) [4 pages]Impact of Cosmic Rays on Stratospheric Chlorine Chemistry and Ozone DepletionReceived 13 March 2003; published 31 July 2003 Dissociation induced by cosmic rays of chlorofluorocarbons (CFC) and HCl on the surfaces of polar stratospheric clouds (PSC) has been suggested as playing a significant role in causing the ozone hole. However, observed stratospheric CFC distributions are inconsistent with a destruction of CFC on PSC surfaces and no significant correlation exists between ozone levels and cosmic-ray activity inside the polar regions. Model simulations indicate that this mechanism can have only a limited impact on chemical ozone loss and thus on the recovery of stratospheric ozone. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.058502
DOI:
10.1103/PhysRevLett.91.058502
PACS:
92.70.Cp, 82.33.Tb, 94.10.Fa
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