Study of the stratification of the urban boundary layer of marseille under sea-breeze condition

A 3D numerical simulation was developed to study the stratification of the urban boundary layer of Marseille under sea-breeze condition. Urban boundary layer (UBL) program was performed to document the thermoradiative budget and the fluxes above the urban canopy layer, and also the 4D structure of the UBL above the city. The transportable wind lidar (TWL) provided wind radial velocity measurements along with line-of-sight (LOS) of the transmitted laser beam, whereas the 3D simulations were realized with the Meso-NH non-hydrostatic atmospheric model. The comparison between radial velocity collected by the TWL and those simulated by Meso-NH at a comparable resolution indicated a complex stratification of the atmosphere above Marseille.