Several hydrological analyses need to be founded on a reliable estimate of the design storm, which is the expected rainfall depth corresponding to a given duration and probability of occurrence, usually expressed in terms of return period. The annual series of precipitation maxima for storm duration ranging from 15 min to 1 day, observed at a dense network of raingauges sited in northern central Italy, are analyzed using an approach based on L-moments. The analysis investigates the statistical properties of rainfall extremes and detects significant relationships between these properties and the mean annual precipitation (MAP). On the basis of these relationships, we developed a regional model for estimating the rainfall depth for a given storm duration and recurrence interval in any location of the study region. The applicability of the regional model was assessed through Monte Carlo simulations. The uncertainty of the model for ungauged sites was quantified through an extensive cross-validation.

Relationships between statistics of rainfall extremes and mean annual precipitation: an application for design storm in northern central Italy / G. Di Baldassarre; A. Castellarin; A. Brath. - In: HYDROLOGY AND EARTH SYSTEM SCIENCES. - ISSN 1027-5606. - STAMPA. - 10:4(2006), pp. 589-601. [10.5194/hess-10-589-2006]

Relationships between statistics of rainfall extremes and mean annual precipitation: an application for design storm in northern central Italy

DI BALDASSARRE, GIULIANO;CASTELLARIN, ATTILIO;BRATH, ARMANDO
2006

Abstract

Several hydrological analyses need to be founded on a reliable estimate of the design storm, which is the expected rainfall depth corresponding to a given duration and probability of occurrence, usually expressed in terms of return period. The annual series of precipitation maxima for storm duration ranging from 15 min to 1 day, observed at a dense network of raingauges sited in northern central Italy, are analyzed using an approach based on L-moments. The analysis investigates the statistical properties of rainfall extremes and detects significant relationships between these properties and the mean annual precipitation (MAP). On the basis of these relationships, we developed a regional model for estimating the rainfall depth for a given storm duration and recurrence interval in any location of the study region. The applicability of the regional model was assessed through Monte Carlo simulations. The uncertainty of the model for ungauged sites was quantified through an extensive cross-validation.
2006
Relationships between statistics of rainfall extremes and mean annual precipitation: an application for design storm in northern central Italy / G. Di Baldassarre; A. Castellarin; A. Brath. - In: HYDROLOGY AND EARTH SYSTEM SCIENCES. - ISSN 1027-5606. - STAMPA. - 10:4(2006), pp. 589-601. [10.5194/hess-10-589-2006]
G. Di Baldassarre; A. Castellarin; A. Brath
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/30485
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