| Summary: | In the framework of the European Arctic Stratosperic Ozone Experiment (EASOE) and the Tropospheric Ozone Research (TOR) programme we have performed twenty ozone soundings over Athens, Greece (37.9°N, 23.8°E) during the period from December 1991 to March 1992. The intercomparison of Athens tropospheric mean values with the corresponding values which have been measured at Julich, Germany (50.6°N, 6.2°E) two years ago, shows that in the height region of 1-4 km Athens values are about 20% higher. Also, the same intercomparison in the height region 4-8 km shows that Athens values are about 10% higher than those obtained in Julich. Finally, the examination of the transport occured at 700 hPa level showed that with advection from the north-western sector the ozone mean value was 50.9 ± 3.8 ppb, while 46.9 ± 2.1 ppb with advection from the south-southwestern direction. © 1993.
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