Summary
The new features of total ozone quasi-stationary asymmetry over Antarctic region during Austral spring are presented. The amplitude and longitudinal position of zonal anomalies are calculated for distribution of total ozone along seven individual latitudes at 5-degree intervals between 50°S and 80°S. The mid-latitude collar of ozone-rich stratospheric air has a sub-Antarctic maximum with a mean location in the 90°E- 180°E quadrant and with 354-387 DU total ozone level between 50°S and 65°S. The steady displacement and elongation of the ozone hole under the influence of planetary waves causes a zonal anomaly of low ozone in the sector 0°-60°W with total ozone levels of 190-240 DU between 65°S and 80°S. A significant eastward shift of approximately 40° in longitude is observed in the total ozone minimum over the Weddell Sea–South Atlantic sector during 1979-2005, whereas the zonal maximum is relatively stable in position.