<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Petrakakis, M.J.a</style></author><author><style face="normal" font="default" size="100%">Kelessis, A.G.a</style></author><author><style face="normal" font="default" size="100%">Flocas, H.A.b</style></author><author><style face="normal" font="default" size="100%">Zoumakis, N.M.c</style></author><author><style face="normal" font="default" size="100%">Helmis, C.G.b</style></author><author><style face="normal" font="default" size="100%">Tsougas, M.A.d</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Meteorological conditions during air pollution episodes in Thessaloniki, Greece</style></title><secondary-title><style face="normal" font="default" size="100%">Fresenius Environmental Bulletin</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">air mass</style></keyword><keyword><style  face="normal" font="default" size="100%">Air quality</style></keyword><keyword><style  face="normal" font="default" size="100%">atmospheric circulation</style></keyword><keyword><style  face="normal" font="default" size="100%">atmospheric pollution</style></keyword><keyword><style  face="normal" font="default" size="100%">carbon monoxide</style></keyword><keyword><style  face="normal" font="default" size="100%">Central Macedonia</style></keyword><keyword><style  face="normal" font="default" size="100%">Eurasia</style></keyword><keyword><style  face="normal" font="default" size="100%">Europe</style></keyword><keyword><style  face="normal" font="default" size="100%">Greece</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrogen dioxide</style></keyword><keyword><style  face="normal" font="default" size="100%">Ozone</style></keyword><keyword><style  face="normal" font="default" size="100%">Smoke</style></keyword><keyword><style  face="normal" font="default" size="100%">Southern Europe</style></keyword><keyword><style  face="normal" font="default" size="100%">suspended particulate matter</style></keyword><keyword><style  face="normal" font="default" size="100%">Thessaloniki</style></keyword><keyword><style  face="normal" font="default" size="100%">Thessaloniki [Central Macedonia]</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.scopus.com/inward/record.url?eid=2-s2.0-33749053210&amp;partnerID=40&amp;md5=8f2544c1ed940328ce168724de014dfc</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">8 B</style></number><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">916-922</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In this study, the synoptic scale atmospheric circulation prevailing during 1989-2004 air pollution episodes in the greater area of Thessaloniki (GTA) was examined. The episodes are defined on the basis of the main pollutants measured (SO2, PM10, black smoke, CO, NO2 and O 3) on an hourly basis, at five monitoring stations of the Municipal Air Quality Network of Thessaloniki. During this period, 95 air pollution episodes, which lasted 258 days in total, were detected. The results demonstrate that the air quality in Thessaloniki can be characterized as acute, with respect mainly to photochemical pollutants and suspended particulates (PM 10). It was found that air quality conditions are significantly associated with specific synoptic scale features that contribute to the formation of the local wind field. The high air pollution concentrations are mainly associated with anticyclonic conditions that appear at the highest frequency throughout the whole year and/or advection of warm air masses. These findings can help to understand the association of large scale with local scale flow over GTA that greatly promotes the occurrence of air pollution episodes. © by PSP 2006.</style></abstract><notes><style face="normal" font="default" size="100%">cited By (since 1996)3</style></notes></record></records></xml>