Characterization of convection-related parameters by Raman lidar: Selected case studies from the convective and orographically-induced precipitation study

摘要

An approach to determine the convective available potential energy (CAPE) and the convective inhibition (CIN) based on the use of data from a Raman lidar system is illustrated in this work. The use of Raman lidar data allows to provide high temporal resolution measurements (5 min) of CAPE and CIN and follow their evolution over extended time periods covering the full cycle of convective activity. Lidar-based measurements of CAPE and CIN are obtained from Raman lidar measurements of the temperature and water vapor mixing ratio profiles and the surface measurements of temperature, pressure and dew point temperature provided by a surface weather station. The approach is applied to thedata collected by the Raman lidar system BASIL in the frame of COPS. Attention was focused on 15 July and 25-26 July2007. Lidar-based measurements are in good agreement with simultaneous measurements from radiosondes and withestimates from different mesoscale models.