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List of Abstracts 2183 UPMC Univ. Paris 06, Université Versailles St-Quentin, CNRS/INSU, LATMOS-IPSL, Paris4 Laboratoire de Meteorologie Dynamique/IPSL, Ecole Polytechnique, Palaiseau5 Laboratoire d’Optique Atmosphérique, Université Lille 1, CNRS, Villeneuve d’Asq6 INERIS, Verneuil en HalatteContact: solene.turquety@lmd.polytechnique.frFires burn large areas of forest every year in Southern Europe, emitting huge amounts of trace gases andaerosols, sometimes resulting in severe degradation of air quality. Due to the difficulty of evaluating theassociated emissions, this strong perturbation is most often not accounted for in air quality forecasting. Inthis presentation, we will discuss the constraint provided by satellite observations on pollution emissions andtransport from fires, in particular by the IASI/METOP and A-Train missions (MODIS, PARASOL,CALIPSO). IASI/METOP allows the global monitoring of several key species for atmospheric chemistryanalysis, with unprecedented spatial sampling and coverage. Its ability to detect a large series of specieswithin fire plumes has recently been demonstrated, and could significantly improve current evaluation of theimpact of such extreme pollution events on air quality. Here, we will discuss the information provided by thecarbon monoxide (CO) retrievals, one of the main species measured by IASI, on fire emissions transportmechanisms and pathways. Therefore, IASI retrievals will be compared to simulations from the CHIMEREregional chemistry and transport model for the case study of the large fires which burned in Greece duringAugust 2007. We will then present an analysis of the information provided by IASI on chemistry within thetransported plumes using the retrievals for the shorter lived species and for ozone. Finally, the IASIobservations will be coupled to the aerosol observations from PARASOL and CALIPSO in order to assessthe impact of this specific fire event on air quality in the Euro-Mediterranean region (both PM2.5 andozone).P-Observations 2.101 ID:4220 10:30Air pollution over the Western Mediterranean: Observations from a cruise ship during the years2006-2009.Clara Schembari 1 , Krum Velchev 1 , Fabrizia Cavalli 1 , Eleonora Cuccia 2 , Alessandro Dell'Acqua 1 , FrankDentener 1 , Jens Hjorth 1 , Silvia Nava 3 , Paolo Prati 2 , Rita Van Dingenen 1 , Elisabetta Vignati 1 , FrankRaes 11 European Commission, JRC, Institute for Environment and Sustainability, I-21027, Ispra (VA), Italy2 Department of Physics, University of Genova and I.N.F.N., Italy3 NFN-sect. Florence, National Institute of Nuclear Physics, Via Sansone 1, 50019, Firenze, ItalyContact: jens.hjorth@jrc.itObservations from monitoring stations as well as from field campaigns have shown high levels of airpollution both by ozone and by particulate matter in the Mediterranean Basin. However much of the area isnot adequately covered by air pollution monitoring stations and there is a particular lack of observations overthe sea. In order to help to fill in the gap of observations and to learn more about sources of air pollutantsand transformation processes, the JRC has initiated a long-term monitoring programme in collaboration withthe Italian cruise line Costa Crociere. Measurements have been performed regularly during spring-summerautumnsince 2006 from a monitoring station placed on Costa Crociere cruise ships following a fixed weeklyroute in the Western Mediterranean. Ozone and Black Carbon (using an Aethalometer) are measured, alongwith SO2, NOx and particle size distributions. Four week-long campaigns with filter-sampling andsubsequent chemical analysis have been carried out and also time-resolved analysis of the elementarycomposition of submicron aerosols was performed by streaker-sampling followed by PIXE analysis. Thepresent study provides an overview of the observations done during the period 2006-2009, showingconcentration levels and air pollution ‘hot spots’ in the Western Mediterranean. The data have been analysedwith the aim of gaining knowledge about the contributions of different sources to air pollution with ozoneiCACGP-IGAC 2010 14 July, 2010