Regional transport and dilution during high-pollution episodes in southern France: Summary of findings from the Field Experiment to Constraint Models of Atmospheric Pollution and Emissions Transport (ESCOMPTE)

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Read Full Article (file size: 4246787 bytes) Cited by JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 112, D13105, doi:10.1029/2006JD007494, 2007 Regional transport and dilution during high-pollution episodes in southern France: Summary of findings from the Field Experiment to Constraint Models of Atmospheric Pollution and Emissions Transport (ESCOMPTE) P. Drobinski Institut Pierre-Simon Laplace, Service d'Aéronomie, Université Pierre et Marie Curie, Paris, France F. Saïd Laboratoire d'Aérologie, Université Paul Sabatier, Toulouse, France G. Ancellet Institut Pierre-Simon Laplace, Service d'Aéronomie, Université Pierre et Marie Curie, Paris, France J. Arteta Laboratoire de Météorologie Physique, Université Blaise Pascal, Aubière, France P. Augustin Laboratoire de Physico-Chimie de l'Atmosphère, Université du Littoral-Côte d'Opale, Dunkerque, France S. Bastin Institut Pierre-Simon Laplace, Service d'Aéronomie, Université Pierre et Marie Curie, Paris, France A. Brut Laboratoire d'Aérologie, Université Paul Sabatier, Toulouse, France J. L. Caccia Laboratoire de Sondages Electromagnétiques de l'Environnement Terrestre, Université du Sud Toulon-Var, Toulon, France B. Campistron Laboratoire d'Aérologie, Université Paul Sabatier, Toulouse, France S. Cautenet Laboratoire de Météorologie Physique, Université Blaise Pascal, Aubière, France A. Colette Institut Pierre-Simon Laplace, Service d'Aéronomie, Université Pierre et Marie Curie, Paris, France I. Coll Faculté des Sciences et Technologie, Laboratoire Inter-Universitaire des Systèmes Atmosphériques, Créteil, France U. Corsmeier Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Universität Karlsruhe, Karlsruhe, Germany B. Cros Laboratoire d'Aérologie, Université Paul Sabatier, Toulouse, France A. Dabas Centre National de Recherches Météorologiques, Météo-France, Toulouse, France H. Delbarre Laboratoire de Physico-Chimie de l'Atmosphère, Université du Littoral-Côte d'Opale, Dunkerque, France A. Dufour Centre National de Recherches Météorologiques, Météo-France, Toulouse, France P. Durand Laboratoire d'Aérologie, Université Paul Sabatier, Toulouse, France V. Guénard Laboratoire de Sondages Electromagnétiques de l'Environnement Terrestre, Université du Sud Toulon-Var, Toulon, France M. Hasel Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Universität Karlsruhe, Karlsruhe, Germany N. Kalthoff Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Universität Karlsruhe, Karlsruhe, Germany C. Kottmeier Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Universität Karlsruhe, Karlsruhe, Germany F. Lasry Faculté des Sciences et Technologie, Laboratoire Inter-Universitaire des Systèmes Atmosphériques, Créteil, France A. Lemonsu Centre National de Recherches Météorologiques, Météo-France, Toulouse, France F. Lohou Laboratoire d'Aérologie, Université Paul Sabatier, Toulouse, France V. Masson Centre National de Recherches Météorologiques, Météo-France, Toulouse, France L. Menut Laboratoire de Météorologie Dynamique, Institut Pierre-Simon Laplace, École Polytechnique, Palaiseau, France C. Moppert Laboratoire d'Aérologie, Université Paul Sabatier, Toulouse, France V. H. Peuch Centre National de Recherches Météorologiques, Météo-France, Toulouse, France V. Puygrenier Laboratoire d'Aérologie, Université Paul Sabatier, Toulouse, France O. Reitebuch Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft- und Raumfahrt, Oberpfaffenhofen, Germany R. Vautard Laboratoire des Sciences du Climat et de l'Environnement, Institut Pierre Simon Laplace, Commisariat à l'Énergie Atomique, Gif-sur-Yvette, France Abstract In the French Mediterranean basin the large city of Marseille and its industrialized suburbs (oil plants in the Fos-Berre area) are major pollutant sources that cause frequent and hazardous pollution episodes, especially in summer when intense solar heating enhances the photochemical activity and when the sea breeze circulation redistributes pollutants farther north in the countryside. This paper summarizes the findings of 5 years of research on the sea breeze in southern France and related mesoscale transport and dilution of pollutants within the Field Experiment to Constraint Models of Atmospheric Pollution and Emissions Transport (ESCOMPTE) program held in June and July 2001. This paper provides an overview of the experimental and numerical challenges identified before the ESCOMPTE field experiment and summarizes the key findings made in observation, simulation, and theory. We specifically address the role of large-scale atmospheric circulation to local ozone vertical distribution and the mesoscale processes driving horizontal advection of pollutants and vertical transport and mixing via entrainment at the top of the sea breeze or at the front and venting along the sloped terrain. The crucial importance of the interactions between processes of various spatial and temporal scales is thus highlighted. The advances in numerical modeling and forecasting of sea breeze events and ozone pollution episodes in southern France are also underlined. Finally, we conclude and point out some open research questions needing further investigation. Received 9 May 2006; accepted 15 December 2006; published 4 July 2007. Keywords: coastal atmospheric circulation; pollution; French Mediterranean basin. Index Terms: 3329 Atmospheric Processes: Mesoscale meteorology; 3307 Atmospheric Processes: Boundary layer processes; 0345 Atmospheric Composition and Structure: Pollution: urban and regional (0305, 0478, 4251). Read Full Article (file size: 4246787 bytes) Cited by Citation: Drobinski, P., et al. (2007), Regional transport and dilution during high-pollution episodes in southern France: Summary of findings from the Field Experiment to Constraint Models of Atmospheric Pollution and Emissions Transport (ESCOMPTE), J. Geophys. Res., 112, D13105, doi:10.1029/2006JD007494. Copyright 2007 by the American Geophysical Union.

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