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Estimating extreme dry-spell risk in the middle Ebro valley (northeastern Spain): a comparative analysis of partial duration series with a general Pareto distribution and annual maxima series with a Gumbel distribution

AuthorsVicente Serrano, Sergio M. ; Beguería, Santiago
KeywordsDry spells
Return periods
Partial duration series
Annual maximum series
Gumbel distribution
Generalized Pareto distribution
Ebro valley
Issue DateJul-2003
CitationInternational Journal of Climatology 23(9): 1103-1118 (2003)
AbstractThis paper analyses a 50 year time series of daily precipitation in a region of the middle Ebro valley (northeastern Spain) in order to predict extreme dry-spell risk. A comparison of observed and estimated maximum dry spells (50 year return period) showed that the generalized Pareto (GP) distribution combined with partial duration series (PDS) gives better results than the Gumbel distribution fitted to annual maximum series. Indeed, the classical Gumbel approach underestimated the empirical duration of dry spells. The PDS–GP approach was successfully applied in the study of extreme hydro-climatic variable values. The results reported here could be applied in estimating climatic drought risks in other geographical areas.
Description16 páginas, 12 figuras.-- El documento se encuentra en su versión post-print.
Publisher version (URL)http://dx.doi.org/10.1002/joc.934
Appears in Collections:(IPE) Artículos
(EEAD) Artículos
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