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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 18, issue 11
Ann. Geophys., 18, 1467–1481, 2000
https://doi.org/10.1007/s00585-000-1467-y
© European Geosciences Union 2000
Ann. Geophys., 18, 1467–1481, 2000
https://doi.org/10.1007/s00585-000-1467-y
© European Geosciences Union 2000

  30 Nov 2000

30 Nov 2000

Measurements and modelling of atmospheric pollution over the Paris area: an overview of the ESQUIF Project

L. Menut1,*, R. Vautard1, C. Flamant2, C. Abonnel7, M. Beekmann2, P. Chazette4, P. H. Flamant1, D. Gombert6, D. Guédalia5, D. Kley8, M. P. Lefebvre7, B. Lossec7, D. Martin4, G. Mégie2, P. Perros3, M. Sicard2, and G. Toupance3 L. Menut et al.
  • 1Laboratoire de Météorologie Dynamique, CNRS, France
  • 2Service d'Aéronomie CNRS, France
  • 3Laboratoire Interuniversitaire des Systèmes Atmosphériques, CNRS, France
  • 4Laboratoire des Sciences du Climat et de l'Environnement, Commissariat à l'Energie Atomique, CNRS, France
  • 5Laboratoire d'Aérologie, CNRS-Université Paul Sabatier, France
  • 6AIRPARIF, Paris, France
  • 7MÉTÉO-FRANCE, Paris, France
  • 8Forschungszentrum Jülich, Germany
  • *Present address: Laboratoire de Météorologie Dynamique, Institute P.S. Laplace, Ecole Polytechnique, 91128 Palaiseau Cedex, France

Abstract. The "Étude et Simulation de la QUalité de l'air en Ile de France" (ESQUIF) project is the first integrated project dedicated to the study of the processes leading to air pollution events over the Paris area. The project was carried out over two years (summer 1998 to winter 2000) to document all types of meteorological conditions favourable to air quality degradation, and in particular to photo oxydant formation. The goals of ESQUIF are (1) to improve our understanding of the relevant chemical and dynamical processes and, in turn, improve their parametrizations in numerical models, and (2) to improve and validate existing models dedicated to pollution analysis, scenarios and/or forecasting, by establishing a comprehensive and thorough database. We present the rationale of the ESQUIF project and we describe the experimental set-up. We also report on the first experiments which took place during the summer of 1998 involving surface networks, and remote sensing instruments as well as several aircraft. Focusing on three days of August 1998, the relative contributions of long-range transported and locally-produced ozone to the elevated ozone concentrations observed during this period are discussed and chemistry-transport model preliminary results on this period are compared to measurements.

Key words: Atmospheric composition and structure (pollution – urban and regional; troposphere – composition and chemistry) – Meteorology and atmospheric dynamics (mesoscale meteorology)

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