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Three millennia of heavy rainfalls in Western Mediterranean: Frequency, seasonality and atmospheric drivers

AutorCorella, Juan Pablo ; Valero-Garcés, Blas L. ; Vicente Serrano, Sergio M. ; Brauer, A.; Benito, G.
Fecha de publicación2016
EditorNature Publishing Group
CitaciónScientific Reports 6 (2016)
ResumenDocumenting subdecadal-scale heavy rainfall (HR) variability over several millennia can rarely be accomplished due to the paucity of high resolution, homogeneous and continuous proxy records. Here, using a unique, seasonally resolved lake record from southern Europe, we quantify temporal changes in extreme HR events for the last 2,800 years in this region and their correlation with negative phases of the Mediterranean Oscillation (MO). Notably, scarce HR dominated by a persistent positive MO mode characterizes the so-called Migration period (CE 370-670). Large hydroclimatic variability, particularly between CE 1012 and 1164, singles out the Medieval Climatic Anomaly, whereas more stationary HR conditions occurred between CE 1537 and 1805 coinciding with the Little Ice Age. This exceptional paleohydrological record highlights that the present-day trend towards strengthened hydrological deficit and less HR in the western Mediterranean is neither acute nor unusual in the context of Late Holocene hydrometeorological variability at centennial to decadal time scales.
Identificadoresdoi: 10.1038/srep38206
issn: 2045-2322
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