| Summary: | Ozone laminae are narrow layers of enhanced (positive) or depleted (negative) ozone concentration. Large laminae are formed at the vicinity of polar vortex and they are one of the mechanism of air masses exchange between the polar vortex and its surrounding. We observed similar long-term trend pattern in the total amount of ozone in laminae per profile and in the number of laminae per profile as in the case of total ozone (Krizan and Lastovicka, JGR, 2005). The aim of this poster is to find the dependence of the ozone lamina characteristics on the value of potential vorticity at the pressure levels in the stratosphere. We expect the ozone laminae will be more frequent near the vortex edge. The number of ozone laminae will decrease with increasing distance from the vortex edge. We use data from the European middle latitudes ozonosonde stations taken from WOUDC database in Toronto. We use data from 3 stations: Hoheinpeisenberg, Edmonton and Resolute Bay. Possible changes with time of the dependence of ozone lamina characteristics on the the distance from the polar vortex edge as a consequence of long-term changes of ozone and greenhouse gas concentration in the lower stratosphere will be searched for.
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