Stratification of the lower troposphere during the ESCOMPTE campaign

Clotilde Moppert (1) , Frédérique Saïd (1) , Aurore Brut (1) , Vincent Puygrenier (1) , Bernard Campistron (1) , Bruno Bénech (1) , Fabienne Lohou (1) , Frédéric Cousin (1)

1 LAERO - Laboratoire d'aérologie

Implementation of adapted air quality policies and prediction of pollution events require the improvement of our understanding of combined chemical and dynamical processes which lead to high pollutants concentration in the atmospheric boundary layer. The ESCOMPTE program was devoted to establish a detailed 3-D database of primary pollutant emissions together with the dynamics and chemical composition of the atmosphere in order to validate and improve chemistry transport models. The ESCOMPTE experiment took place in the early summer of 2001, in the south-eastern part of France where the combination of high urbanization and industrialization with hot and sunny weather enhances photochemical pollution events. Due to the complex terrain of this region (both coastal and moderately mountainous area, channeling effects of the Rhône and Durance valleys,…), a preliminary effort is necessary to study the atmospheric dynamics in this heterogeneous region in relation with larger scales processes. The main objectives of this paper is to present the vertical structure of the ESCOMPTE area during different meteorological conditions of the second intensive observation period (IOP2) which lasted from June 22 to June 26.

Domaines: Physique Atmosphérique et Océanique [physics.ao-ph]

Clotilde Moppert, Frédérique Saïd, Aurore Brut, Vincent Puygrenier, Bernard Campistron, et al.. Stratification of the lower troposphere during the ESCOMPTE campaign. 3rd Mesoscale Transport and Diffusion Meeting, 2004, Paris, France. ⟨hal-00141997⟩