Abstract
AbstractThe paper draws from recent experience with operational regional flash flood warning systems deployed worldwide that utilize radar precipitation data as input to provide regional warnings at high spatial resolution. This paper focuses on radar precipitation data quality control and adjustments in context of making the radar data useful in hydrologic application specific to flash flood warnings. Aspects discussed are radar precipitation preprocessing for hydrologic application, identifying regions of inappropriate radar data for hydrologic use, developing bias adjustment strategies using limited rain gauge networks under the radar umbrella, and impacts of radar precipitation uncertainty on soil water estimates that impact in turn predictions and warnings. The bias adjustment strategies presented are twofold: (1) adjusting for the long-term mean bias in the radar precipitation data (climatological bias adjustment), and (2) accounting for event-specific, temporal deviations from the climatological bi...
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