Main focus EXTRA project
Motivation:
Extreme rainfall events of small and medium basins often cause flash floods, as in August 2002 the tributaries of the river Elbe originating in the Erzgebirge (Müglitz, Weißeritz and Mulde). In most cases such extreme rainfall events are very regional (like the event at Marienberg, 4. July 1999). As the precipitation gauge measurements are typically limited from such small basins remote sensing data, RADAR and satellite, should be used for an on-line operational precipitation measurement.Aims:
The main focus of the EXTRA project is the development of an operational and spatially transferable tool to define the temporal and spatial characteristics of extreme precipitation with high resolution. The Saxonian low mountian range Erzgebirge and the upper catchment of the Danube serve as a target and testing area, respectively.Methods:
1. To maximise informationThe resolution and stability of rainfall measurements should be improved by the maximising of information of all available data for a time step (conventional measured rainfall data, radar and satellite data).
2. Enhancement of redundancy
By using different methods of measurements and techniques of rainfall statistics a higher redundancy is achieved. Thus, it is possible to determine more precisely the temporal and spatial distribution of extreme rainfall events including their uncertainties.