Abstract
This paper discusses the variations of atmospheric semi-diurnal tidal parameters caused by global ozone anomalies of the Antarctic “ozone hole” type and to establish some regularities of their evolution. The analysis of preliminary data showed that the anomalous decrease of ozone concentration in October at high latitudes of the Southern hemisphere results in a simultaneous abrupt drop of the semi-diurnal tidal amplitude values at high latitudes of the lower thermosphere in the Northern hemisphere. Inasmuch as such an abrupt decrease of amplitude values in the lower thermosphere in October is observed from experimental data since 1953 the authors have set up the hypothesis that the Antarctic “ozone hole” had appeared at least not later than this time period.
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