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Extreme winter precipitation in the Iberian Peninsula in 2010: anomalies, driving mechanisms and future projections

AuthorsVicente Serrano, Sergio M. CSIC ORCID ; Trigo, Ricardo M.; López-Moreno, Juan I. CSIC ORCID ; Liberato, M. L. R.; Lorenzo-Lacruz, Jorge CSIC ORCID; Beguería, Santiago CSIC ORCID ; Morán-Tejeda, Enrique CSIC ORCID CVN; El Kenawy, Ahmed M. CSIC ORCID
KeywordsNorth Atlantic Oscillation
Extreme events
Natural hazards
Atmospheric circulation
Climate change
Issue Date2011
PublisherInter Research
CitationVicente-Serrano SM, Trigo RM, López-Moreno JI, Liberato MLR, Lorenzo-Lacruz J, Beguería S, Morán-Tejeda E, El Kenawy A. Extreme winter precipitation in the Iberian Peninsula in 2010: anomalies, driving mechanisms and future projections. Climate Research 46: 51-65 (2011)
AbstractThis work provides a first assessment of the outstanding characteristics of the anomalous precipitation occurrence in the winter of 2010 over the Iberian Peninsula, as well as on the associated atmospheric driving mechanisms. Large areas of Iberia, those located in the western and southern sectors, registered a new historical maximum in winter precipitation values. Simultaneously, the most extreme, negative North Atlantic Oscillation (NAO) index for winter was recorded in 2010. The anomalous pressure gradient in the North Atlantic region steered a large number of low pressure systems via an unusually southern path, directly influencing Iberia and northern Africa. Storms were frequent, and a high number of days occurred with weather types prone to cause precipitation. In addition, the most extreme daily precipitation episodes were recorded during the period with the strongest negative NAO index. Global climate models for the entire 21st century show that strong negative NAO winters, similar to that which occurred in 2010, may be expected in the future.
Description15 Pag., 3 Tabl., 10 Fig.
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