Sicre M. A. auteur aut IRD Hall I. R. auteur aut IRD Mignot Juliette auteur aut IRD Khodri Myriam auteur aut IRD Ezat U. auteur aut IRD Truong M. X. auteur aut IRD Eiriksson J. auteur aut IRD Knudsen K. L. auteur aut IRD text journalArticle eng text/pdf born digital access A decadal resolution time series of sea surface temperature (SST) spanning the last two millennia is reconstructed by combining a proxy record from a new sediment sequence with previously published data from core MD99-2275, north of Iceland. The alkenone based SST reconstruction is validated with historic observational data and compared to a new similar temporal resolution reconstruction obtained from sediment core RAPiD21-3K, in the subpolar North Atlantic. The two SST paleorecords show consistent multidecadal scale coolings throughout the interval and similar expressions during the contrasted climatic periods 'colloquially known' as the Medieval Climatic Anomaly (MCA) and Little Ice Age (LIA). In order to further understand the temporal and spatial SST variations and investigate the influence of natural forcings on the observed SST changes during the last millennium, we compare our time series to simulations using the Institut Pierre-Simon Laplace IPSLCM4-v2 climate model. This comparison highlights the potential importance of volcanism as a natural forcing driving coherent abrupt cooling events captured in the subpolar North Atlantic records. specialized 032 26 PA4218 2011 0883-8305 https://www.documentation.ird.fr/hor/fdi:010054293 10.1029/2011pa002169 0883-8305 [F B010054293] https://www.documentation.ird.fr/hor/fdi:010054293 https://www.documentation.ird.fr/intranet/publi/2012/01/010054293.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2012-02-01 2021-04-22 fdi:010054293 fre