文档介绍：Solar aspects of papers
Contribution of Solar UV Radiation to Long-Term Ozone Variations
I. G. Dyominov, and A. M. Zadorozhny
Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia
Abstract. A 2-D dynamical radiative-photochemical model of the ozonosphere including aerosol physics is used to examine the changes of the Earth’s ozone layer occurred during the 21st and 22nd solar cycles. The calculations show that contribution of solar UV radiation to the total ozone variation is more significant at high latitudes. The calculated value of the global annual average of total ozone changes in the region between 60°S and 60°N due to UV flux variation from solar minimum to solar maximum is about %. This value parable in absolute value with the global total ozone changes caused by anthropogenic pollution of the atmosphere during the same time period. The discharges of sulphate species during El Chichon and Mt. Pinatubo eruptions also led parable global total ozone changes in 1983 and 1992 of about -% and -%, respectively. The calculated ozone variations are in a good agreement with the observed data.
Introduction
It is known that simultaneous influence of different natural and anthropogenic factors on the ozone layer is non-additive and leads to ozone change different from a simple sum of the ozone responses to individual perturbations [., Dyominov, 199