POSSIBLE IMPACT OF POLAR STRATOSPHERIC PROCESSES ON MIDLATITUDE VERTICAL OZONE DISTRIBUTIONS

Balloon-borne ozone soundings have also been performed as part of Euro pean Arctic Stratospheric Ozone Experiment (EASOE) at Lindenberg, Hohe npeissenberg and Athens. Differences between these stations will be di scussed with regard to the vertical ozone distributions and the featur es of stratospheric circulation during winter. The results give some e vidence on the impact of chemically-disturbed air from the Arctic stra tosphere to mid-latitudes from January until the middle of February du ring EASOE-winter in 1992. Ozone depletion is significantly pronounced at greater altitudes in mid-latitudes as it develops in polar latitud es.