The regional scale modelling tools are built around nested versions of the WRF (Weather Research and Forecast) mesoscale meteorological model and of the CHIMERE (or FARM) reactive transport and dispersion models, which take atmospheric emissions and their interactions into account. The solutions can then be nested down to metric resolution with the PMSS model (Parallel Micro SWIFT SPRAY), readily applicable to the detailed description of air pollution at the local scale, and its effects on buildings façades, monuments and statues. The combination of regional and local scale tools allows to include the contribution to air pollution from both distant and local emission sources (industrial, traffic, residential sectors, etc).
