Author(s)

R. Stlibi, Ph. Tercier & Ch. Haberli

Abstract

The convective boundary layer (CBL) depth is an important parameter for air pollution problems because it controls the vertical extension of the volume of dispersion. Conventional methods to evaluate CBL height are based on ground meteorological measurements recorded by automatic networks. Another contin- uous source of informations regarding the structure of the atmosphere are given by the operational aerological soundings launched daily at 0 UTC and 12 UTC. Advanced meteorological pre-processor gather informations from both sources to better characterize the CBL structure in order to evaluate its depth. An alternate approach is the analysis of the soundings introduced by Betts. Based on conserved thermodynamic variables, his examination of tem- perature, pressure and humidity profiles permits to detect trans

Keywords