Modeling and observing key processes driving the fog life cycle
Stolaki, S. ; Dupont, J.-C. ; Haeffelin, M. ; Lac, C. ; Bergot, T. ; Burnet, F.
The study focuses on a radiation fog event that occurred on the 15 November 2011 and lasted around 7.5 hours at the SIRTA Observatory (Instrumented Site for Atmospheric Remote Sensing Research), near Paris, in France. At SIRTA, the radiative, microphysical and dynamical processes driving the fog life cycle are fully monitored near the surface and throughout the boundary layer. An analysis combining these measurements and numerical simulations with the single-column mode of the Meso-NH non-hydrostatic, pseudo-compressible model has been performed. Sensitivity tests have been performed with the aim of defining an appropriate configuration for a realistic simulation of the fog event. Moreover, the influence of the CCN activation parameterizations available in the model on fog characteristics, as well as the role of the aerosol distribution and the type of the aerosols (maritime or continental) on fog life cycle and the interaction of these processes with turbulence kinetic energy in the vertical are examined.
Accès à la notice sur le site du portail documentaire de Météo-France