Potential Vorticity (PV) is a conservative parameter of the atmosphere
useful for exploring strong atmospheric invasions. In this paper, we
explored the Potential Vorticity climatological characteristics over the
Greater area of Athens. For this purpose 3 isentropic levels (315, 330
and 350 K) and 3 isobaric levels (300, 350 and 500 hPa) of reanalysis
data were examined. Data were derived from the European Centre for
Medium-Range Weather Forecasts (ECMWF) website. The results indicate the
occurrence of low values of PV in Greater Athens Area. However, there
were cases, especially during winter and spring, that very high values
of PV were observed
