All DWD radar products and original 3-D radar measurements will be made available. A quicklook inventory will allow the PQP participants to pick case studies easily. The PQP project VERIPREG (Paulat et al. 2005) will produce hourly precipitation maps from a combination of radar (composite of precipitation scans) and in situ rain gauge data. The PQP project QUEST will use the 3D radar reflectivities to evaluate the forecasted hydrometeor distributions via forward simulation by a polarimetric radar operator.