Doppler Weather Radar (DWR) is used to measure the areal rainfall and other dimensional structures of precipitating systems then rainfall is one of vital factors to study or improve efficiency of artificial rains. To do an analysis, we need data which represents quantity and distribution of rainfall based on any time and regions more than data of rainfall at specific area.Because rainfall constitutes the main source of water for the terrestrial hydrological process, accurate measurement and prediction of the spatial and temporal distribution of the rainfall is a basic issue in meteorology.
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