Abstract
Abstract The ozone mixing ratio data from 1958 to 2001 from ECMWF was used to calculate global ozone transport and analyze the spatial-temporal distribution of the ozone transport. The results are as followings: (1) The intensity of ozone transport enhances from the upper troposphere to the lower stratosphere and reaches the highest value at 30hPa and then it decreases. The ozone vertical transport is mainly from the stratosphere to the troposphere. The OUT (ozone upward transportation) is mainly over the ocean, while the ODT (ozone downward transportation) is mainly over the mainland and there is a strong and perennial ODT center over the Eurasian Continent. (2) The ozone transportation varies with the season, and its intensity is the strongest in winter and weakest in spring. It is relatively weak in autumn and in summer. And it is mainly in the northern hemisphere in winter and in spring, while it is mainly in the southern hemisphere in autumn and in summer. (3) There is a clear about 20-year period variability of the ozone transportation below 20hPa.
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