AIR-QUALITY IN THE ATHENS BASIN DURING SEA-BREEZE AND NON-SEA BREEZE DAYS USING LASER-REMOTE-SENSING TECHNIQUE

It is well established both From theory and experimental evidence that sea breeze plays an advert role on air pollution situation over a;coa stal urban area, specially during summer. This also applies to Athens area. Ground-based measurements in the area have shown that northerly wind flows during summertime play a depollution role in the Greater Al :hens Area. A wind field over a city is responsible for a mechanism fo rming a particular profile of the air pollutant considered; such air p ollutant profiles were found in Athens for first time to a height of 1 200m in the Atmospheric Boundary Layer during an experimental campaign in the summer of 1994. The paper gives profiles of ozone and nitrogen dioxide on sea-breeze and non-sea-breeze days with possible explanati ons. Air quality aspects within the first 1500 m of the Atmospheric Bo undary Layer over Athens are also discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.