Short-term Climatic Change of Antarctic Ozone

The spatial-temporal variations of Antarctic ozone are studied by using the surface-observed data of Antarctic ozone from 1957 to 1992. The results show that during the last 35 years the mean total ozone in Antarctic has an obvious decreasing trend, but in different regions, periods and seasons, there are great differences for the ozone variable trend. In recent years the ozone discrepancy in Antarctic is caused by the formation and development of Antarctic ozone hole. There exist obvious annual oscillation periods, quasi-20 and quasi-30 months for Antarctic ozone. The ozone variations are in close relationship with astronomical sunshine, stratospherical temperature field, polar stratospherical ice crystal clouds and presence of man-made CFCs and halons, etc