Uncertainties in reactive uptake coefficients for solid stratospheric particles-2. Effect on ozone depletion

Details Uncertainties in reactive uptake coefficients for solid stratospheric particles-2. Effect on ozone depletion Uncertainties in reactive uptake coefficients for solid stratospheric particles-2. Effect on ozone depletion

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.1747c&link_type=abstract

Geophysical Research Letters, Volume 24, Issue 14, p. 1747-1750

Physics

23

Atmospheric Composition And Structure, Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Atmospheric Composition And Structure: Cloud Physics And Chemistry

Scientific paper

Uncertainties in reactive uptake coefficients for reactions involving HCl, ClONO2 and HOCl on nitric acid trihydrate (NAT) and sulfuric acid tetrahydrate (SAT) are shown to affect modeled Arctic stratospheric ozone depletion in a photochemical box model. The main contribution to the difference arises from the reaction ClONO2+HCl->Cl2+HNO3 in early to mid-winter. During this period, differences in predicted HCl and ClONO2 are more than 1 ppbv for several weeks when an upper limit for solid PSC existence is assumed. Ozone depletion is greater when liquid aerosols persist through the winter compared with cases where solid particles are assumed to form.

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