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Nat. Hazards Earth Syst. Sci., 6, 611-619, 2006
www.nat-hazards-earth-syst-sci.net/6/611/2006/
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Rainfall downscaling and flood forecasting: a case study in the Mediterranean area

N. Rebora1, L. Ferraris1,2, J. von Hardenberg1,3, and A. Provenzale1,3
1CIMA, University of Genoa and University of Basilicata, Savona, Italy
2DIST, University of Genoa, Genoa, Italy
3ISAC-CNR, Turin, Italy

Abstract. The prediction of the small-scale spatial-temporal pattern of intense rainfall events is crucial for flood risk assessment in small catchments and urban areas. In the absence of a full deterministic modelling of small-scale rainfall, it is common practice to resort to the use of stochastic downscaling models to generate ensemble rainfall predictions to be used as inputs to rainfall-runoff models. In this work we present an application of a new spatial-temporal downscaling procedure, called RainFARM, to an intense precipitation event predicted by the limited-area meteorological model Lokal Model over north-west Italy. The uncertainty in flood prediction associated with the small unresolved scales of forecasted precipitation fields is evaluated by using an ensemble of downscaled fields to drive a semi-distributed rainfall-runoff model.

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Citation: Rebora, N., Ferraris, L., von Hardenberg, J., and Provenzale, A.: Rainfall downscaling and flood forecasting: a case study in the Mediterranean area, Nat. Hazards Earth Syst. Sci., 6, 611-619, 2006.   Bibtex   EndNote   Reference Manager

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