Physics
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.8075p&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. D8, May 30, 1992, p. 8075-8082. Research supported by CEC and ASI
Physics
2
Annual Variations, Antarctic Regions, Atmospheric Chemistry, Ozone Depletion, Stratosphere, Aerosols, Clouds (Meteorology), Ozonometry, Polar Regions
Scientific paper
The secular trend of the Antarctic ozone hole has been studied with a two-dimensional model which can simulate formation of polar stratospheric clouds and includes heterogeneous chemical reactions. Results from the numerical simulation have been validated by comparison with available experimental data. Trends up to the year 2010 using standard (i.e., homogeneous) and heterogeneous chemistry have been compared and show that global ozone depletion reached 5-6 percent in the last 30 years and will average 8 percent for the next 20 years. Subtracting a 2 percent loss due to standard chemistry in the presence of trace gas increase in the last 30 years, a 3-4 percent global ozone loss due to heterogeneous chemistry is found. The depletion is evident even outside the Southern Hemisphere spring season and at midlatitudes, pointing to an increase in global ozone sink.
Pitari Giovanni
Verdecchia Marco
Visconti Guido
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