Total ozone decrease at South Pole, Antarctica, 1964‐1985

doi:10.1029/gl013i012p01248

Total ozone decrease at South Pole, Antarctica, 1964‐1985

2012-12-07

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DOI：10.1029/gl013i012p01248

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Mean monthly total ozone data obtained at South Pole, Antarctica, during 1964‐1985 are presented. Preliminary analysis of the data suggests that total ozone has decreased at South Pole by roughly 20% since the mid‐1960's. Largest decreases have occurred during October and November months, but autumn and winter months also exhibit a decrease. During February months, ozone has increased slightly. Superimposed on the long‐term downward ozone trend are episodic decreases in ozone dating back to 1965 that have occurred at intervals of 4‐6 years. These decreases are shown to be related to delays in stratospheric warmings in Antarctica and the transport of ozone into Antarctica each spring.

Total ozone decrease at South Pole, Antarctica, 1964‐1985

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