LATITUDINAL DISTRIBUTION OF STRATOSPHERIC AEROSOLS DURING THE EASOE WINTER 1991 92/

Lidar measurements of stratospheric aerosols were made at several Arct ic and mid-latitude stations as part of the European Arctic Stratosphe ric Ozone Experiment (EASOE) in 1991/92. Volcanic aerosols were observ ed throughout the winter at all stations. High latitude stations obser ved an aerosol-free stratosphere during most of the winter at altitude s above 450 K potential temperature (above 16 km). An even latitudinal distribution of volcanic aerosols was observed below this level. This is interpreted as indicative of latitudinal transport into the polar region throughout the winter.