Antarctic ozone depletion - 2-D model studies

Details Antarctic ozone depletion - 2-D model studies Antarctic ozone depletion - 2-D model studies

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986georl..13.1327i&link_type=abstract

Geophysical Research Letters (Supplement) (ISSN 0094-8276), vol. 13, Nov. 1986, p. 1327-1330. Research supported by the Norges A

Physics

13

Antarctic Regions, Atmospheric Chemistry, Atmospheric Models, Ozone, Ozone Depletion, Two Dimensional Models, Bromine, Chlorine, Spring (Season), Stratosphere, Winter

Scientific paper

Antarctic ozone depletion is estimated in a two-dimensional global model as a result of increase in chlorine levels from 1 ppb to 2.7 ppb and an increase in bromine levels from 15 ppt to 30 ppt. The adopted increase is assumed to be the anthropogenic influence on the stratospheric concentrations of chlorine and bromine species in 1985. Heterogeneous formation of the ClO from the reaction between ClONO2 and HCl is included in the calculations, hypothesizing that this is the dominant reaction path for chlorinated species on particle surfaces. A total ozone depletion as high as 14-20 percent may have occurred during the month of October at 80 deg S when maximum depletion is obtained. Both the magnitude and the time period when the maximum depletion occurs, agree with observed depletion over the last 8 years.

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