SOUTH POLAR OSCILLATION, ITS POSSIBLE REPRESENTATIONS AND LONG-TERM VARIABILITY
Long-term variations in the atmospheric circulation in the high and middle lati-tudes of the Southern Hemisphere are considered. index of intensity of atmospheric cir-culation, called South Polar Oscillation, SPO, is defined. An analysis of long-term varia-bility of the SPO index is performed; the structure of variability and its linear trends are determined.