Simulation of Local Atmospheric Dynamics in the Coastal Region of Dunkerque

A. A. Sokolov, P. Augustin, E. V. Dmitriev, H. Delbarre, C. Talbot, and M. Fourmentin

The structure of the lower troposphere has been studied during the sea-breeze and post sea-breeze events in an industrialized coastal area of the North Sea. Atmospheric dynamics and dispersion of pollutants in the lower troposphere have been analyzed by the experimental results of the 3D nonhydrostatic Meso-NH model in Dunkerque area (51˚N, 2.20˚E), in the north of France. The simulations were verified and extended by data of the measurement campaign. Ground-based remote sensing systems (lidar and sodar), surface meteorology and air quality network stations data have been employed. We illustrate the different pollution scenarios and breeze structure by the analysis of Lagrangian tracers and back trajectories.

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