During the last years much progress has been made in elucidating the chemical processes governing the formation of the secondary pollutants in the planetary boundary layer (PBL). These pollutants are often formed at local or regional scales and may play an important role on the global atmospheric chemistry. However, the present status of knowledge of the driving processes of the chemical transformations in the atmosphere is not yet fully understood, in particular the dependency of the tropospheric chemistry to the atmospheric dynamics. Indeed, large-scale phenomena such as long-range transports and stratospheric-tropospheric exchanges, or small-scale ones such as turbulence in the boundary layer or biological process at the surface can have important impact on the chemistry and the transport of pollutants in the PBL.

In an attempt to bridge the gap between the different scales involved in atmospheric chemistry, my research objectives are devoted to the study of scale effects combining fine-scale and large-scale approaches. The complete integration of all the relevant scales and all atmospheric processes, e.g. including the dynamical ones, will constitute a major breakthrough in our understanding of the chemical feature of the low atmosphere and in our capacity to predict pollutant behaviors in the PBL.

With that respect, I’m mostly interested in the following lines of research:

• Air quality modelling
• Atmospheric boundary layer
• Emission inventories
• Radon dispersion
• SGS for LES
• Turbulence and chemistry
• Turbulent dispersion
• Turbulent mixing models