%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Brahim, Y. A.
%A Wassenburg, J. A.
%A Cruz, F. W.
%A Sifeddine, Abdelfettah
%A Scholz, D.
%A Bouchaou, L.
%A Dassie, E. P.
%A Jochum, K. P.
%A Edwards, R. L.
%A Cheng, H.
%T Multi-decadal to centennial hydro-climate variability and linkage to solar forcing in the Western Mediterranean during the last 1000 years
%D 2018
%L fdi:010074506
%G ENG
%J Scientific Reports - Nature
%@ 2045-2322
%K ATLANTIQUE NORD ; MEDITERRANEE ; MAROC
%M ISI:000451436100010
%P art. 17446 [8 ]
%R 10.1038/s41598-018-35498-x
%U https://www.documentation.ird.fr/hor/fdi:010074506
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers18-12/010074506.pdf
%V 8
%W Horizon (IRD)
%X Here we present a new composite record from two well-dated speleothem records from two caves in Northern Morocco. The high-resolution record covers the last millennium allowing to detect multi-decadal to centennial periodicities. Over the industrial period, delta O-18 values of our speleothems are shown to be dominated by the main mode of decadal variability in the North Atlantic region: the North Atlantic Oscillation (NAO). Statistical analyses confirm the previously reported multi-decadal variability related to the influence of the Atlantic Multidecadal Oscillation (AMO) in the region. High power and persistent centennial-scale periodicities, similar to the Vries-Suess 200-year solar cycle, are observed as well. Indeed, comparison between solar activity reconstructions and our record confirms the in-phase relationship on centennial time-scales. Low delta O-18 values, and hence negative phases of NAO that bring precipitation towards the Western Mediterranean, are observed during well-known solar minima periods. The results are consistent with previous models which describe low irradiance as a trigger for southward shifts of precipitation-bearing westerlies during winter.
%$ 032 ; 021 ; 062