Physics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18..175m&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 18, Feb. 1991, p. 175-178. Research supported by Italian Antarctic Project a
Physics
4
Antarctic Regions, Gravity Waves, Ozone Depletion, Planetary Waves, Stratosphere, Atmospheric Chemistry, Computerized Simulation, Two Dimensional Models
Scientific paper
The possible effects of the QBO on the ozone distribution have been studied, including in a two-dimensional model, a parameterization of Kelvin and Rossby-gravity wave forcing in the lower equatorial stratosphere. A chemical code complete with heterogeneous reactions allows a simulation of the ozone depletion due to the increase of stratospheric chlorine. With this model, the possible modulation of the secular trend in the Antarctic ozone hole by the QBO is studied. When heterogeneous chemistry is not included, the model shows a polar ozone oscillation (+ or - 6 Dobson units) comparable to that deduced from early measurements (1970-1975). When heterogeneous reactions are taken into account, the model predicts a larger ozone oscillation in the Southern Hemisphere (+ or - 12 Dobson units) comparable to that obtained from recent observations. This behavior seems to point out a QBO induced temperature effect and its feedback on polar stratospheric clouds with the activation of heterogeneous chemistry.
Mancini Ettore
Pitari Giovanni
Verdecchia Melina
Visconti Guido
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