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Abstract
Detailed knowledge on temporal and spatial distribution of precipitation is needed, since many processes on Earth are affected by precipitation (e.g. erosion, flood waters). Different in-situ and remote sensing instruments provide complementary information on the precipitation distribution. Atmospheric models are useful tools to gain additional insight, provided that they are thoroughly evaluated. The aim of the QUEST-B project is to get a deeper insight into the atmospheric processes of the hydrological cycle in Belgium, which is affected by various topographical features. In an initial phase several case studies with convective and frontal situations were selected in order to compare COSMO model output with observational data (e.g. reflectivity data from C-band radar in Wideumont). Results of these case studies will be presented. After the initial phase a model evaluation for two distinctive summer seasons with contrasting precipitation patterns will be performed.