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Annual and seasonal mapping of peak intensity, magnitude and duration of extreme precipitation events across a climatic gradient, northeast Spain

AutorBeguería, Santiago ; Vicente Serrano, Sergio M. ; López-Moreno, Juan I. ; García-Ruiz, José María
Palabras claveextreme precipitation
daily precipitation
precipitation events
exponential distribution
regression-based interpolation
L-moments
peak intensity
magnitude
northeast Spain
duration
Mediterranean
Fecha de publicaciónoct-2009
EditorJohn Wiley & Sons
CitaciónInternational journal of climatology 29 (12): 1759-1779
ResumenAssessing the characteristics of extreme precipitation over large regions has a great interest, mainly due to its applications in hazard analysis. However, most of the analyses are reduced to daily rainfall intensity due to the fact that most long precipitation records were collected on a daily basis. Hazardous situations related to extreme precipitation events, however, can be originated either by very intense rainfall, or by large accumulated precipitation due to the persistence of the rainy conditions over a long period of time. In this paper, we show the use of a methodology based on the extreme-value theory to obtain continuous maps of quantiles of precipitation event parameters—peak intensity, magnitude and duration—for a large region with contrasted climatic characteristics in the northeastern Iberian Peninsula. Spatial models of the probability distributions parameters were calculated, which allowed constructing the regional probability models. The analysis was based on time series of precipitation events, which were obtained from the original daily series. In addition to the usual annual-based analysis, seasonal analyses were also performed. This allowed assessing the differences in the spatial distribution of the probability of extreme events at different times of the year.
Descripción50 Pag., 5 Tabl., 11 Fig. The definitive version is available at: http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-0088
Versión del editorhttp://dx.doi.org/10.1002/joc.1808
URIhttp://hdl.handle.net/10261/32880
DOI10.1002/joc.1808
ISSN0899-8418
E-ISSN1097-0088
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