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Five heavy small-scale rainfall events in North Rhine-Westphalia (Germany) were investigated with radar and raingauge data. Special attention was paid to quality check and adjustment of radar data. Attenuation effects could be observed on both, C-Band and on X-Band radar. Adjustment of radar data to raingauge values turned out to be very difficult in the vicinity of heavy local rain cells. For the five affected regions the precipitation was quantified in the form of areal time series and cumulated radar images. As further result of this project, the spatial extent of the precipitation fields was identified and compared with radar and raingauge data. [ABSTRACT FROM AUTHOR]

Discusses the results of an inquiry into rainfall data measurement and processing for model use in urban hydrology. Participation of addressed countries; Historical development of rainfall data measurements; Percentage of countries with agreed standard; Percentage of countries that use weather radar for rainfall measurement.

From 4--7 December 1997 the 3rd International Workshop on Rainfall in Urban Areas took place in Pontresina, Switzerland. Forty-five participants from 20 countries around the world made it a success. Presentations and discussions represented a high scientific level without neglecting the practioners point of view. In fact, future trends, such as coupling of models of different origins for rainfall forecasting, detailed spatial analysis of rainfall, methods for quality control ofmeasured data, and aspects of climatic change were cornerstones of the workshop. In the following, the outcome of the sessions are briefly highlighted. (c) 1999 IAWQ. Published by Elsevier Science Ltd. [ABSTRACT FROM AUTHOR]