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Detailed Reference Information |
Pitari, G. and Visconti, G. (1991). Ozone trend in the northern hemisphere: A numerical study. Journal of Geophysical Research 96. doi: 10.1029/91JD00268. issn: 0148-0227. |
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A two-dimensional model has been used to study the possible effects of heterogeneous chemistry on the ozone concentration in the northern high latitudes. The model uses a diabatic circulation which is consistent with the calculated ozone. The temperature field is prescribed in such a way to realistically reproduce the thermal conditions in the polar lower stratosphere during the winter season. A complete chemical code is included that produces a realistic nitric acid concentration and then the formation of polar stratospheric clouds of nitric acid tri-hydrate particles. NOx and ClOx families are explicitly predicted as a function of time-dependent N2O, CH4 and CFC mixing ratios from the simulated year 1960 until 2000. The increase of the total chlorine amount in the stratosphere is shown to be a possible explanation for the observed trend of ozone depletion in the high-latitude northern region. The presence of polar stratospheric clouds is found to be important for the seasonal behavior of the ozone secular trend. ¿1991 American Geophysical Union |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Middle atmosphere—composition and chemistry, Meteorology and Atmospheric Dynamics, Middle atmosphere dynamics, Meteorology and Atmospheric Dynamics, Polar meteorology |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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