Abstract
Abstract The abnormally low concentrations of ozone recorded over Novolazarevskaya Station in October 1985 (the Antarctic spring) appear to be linked with the fact that over the past few years the duration of the spring readjustment of circulation over Antarctica (involving the collapse of the wintertime polar vortex) has increased and the intensity of the process has decreased. A further environmental phenomenon which may well be related to the observed reduction in ozone levels, is a marked cooling in the lower stratosphere in spring, recorded quite widely throughout Antarctica. Study of the ozone profile at Mirnyy, Vostok and Novolazarevskaya will continue and will be intensified in future years.
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