Influence of equatorial QBO and SST on polar total ozone, and the 1990 Antarctic ozone hole

Physics

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Annual Variations, Equatorial Regions, Ozone Depletion, Polar Regions, Sea Surface Temperature, Southern Oscillation, Data Correlation, El Nino, Ozonosphere

Scientific paper

Comparisons based on data through 1989 are made between the variation of total ozone at Resolute, Canada (75 N) and the South Pole, and the variation of low-stratospheric temperature at Singapore, reflecting the equatorial quasi-biennial oscillation (QBO) and sea-surface temperature (SST) in eastern equatorial Pacific, that reflects the El Nino-Southern Oscillation (ENSO). On the basis of these relations, the depth of the Antarctic ozone hole in 1990 relative to its depth in 1989 is examined. The total-ozone variations at Resolute are more closely related to the QBO, while these variations at the South Pole seem to have been almost equally related to SST and QBO. Detailed data presented and previous relations recorded, suggest an even deeper Antarctic ozone hole in 1990 than in 1989 and ending the biennial variation in depth of the hole of the last six years.

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