SEASONAL CHANGES OF THE ACTIVITY OF QUASI-STATIONARY PLANETARY WAVES IN THE STRATOSPHERE OVER THE ANTARCTIC

Seasonal changes of the quasi-stationary planetary wave parameters in the Antarctic are considered, the emphasis is on the winter-spring period. Data on the total ozone content in the atmosphere (the satellite spectrometer TOMS) and lower stratosphere temperature (NCEP-NCAR) are used. On the average for 1979-2004, the maximum value of the zonal wave amplitude (80 DU) is reached in October at a latitude of 65 degrees S. From August to November the amplitude maximum is displaced from the middle to high latitudes. Our comparison of the data for the years of an anomalous ozone hole development (1988 and 2002) shows that the wave amplitude increase in the late winter (August) is a sign of the ozone depletion decrease during spring. In August the stationary wave amplitude in the lower stratosphere temperature at the latitudes 60-65 degrees S was about 6 K and about 10 K in 1988 and 2002, respectively. This was one of the causes of distinctions in the development of the stratospheric processes during spring.