(Table S1) Age determination of sediment core RAPiD-21-03K, supplement to: Sicre, Marie-Alexandrine; Hall, Ian R; Mignot, J; Kohdri, M; Ezat, Ullah; Truong, M-X; Eiriksson, Jón; Knudsen, Karen Luise (2011): Sea surface temperature variability in the subpolar Atlantic over the last two millennia. Paleoceanography, 26(4), PA4218

• Main Authors: Sicre, Marie-Alexandrine, Hall, Ian R, Mignot, J, Kohdri, M, Ezat, Ullah, Truong, M-X, Eiriksson, Jón, Knudsen, Karen Luise
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2011
• Subjects: Sample code/label; DEPTH, sediment/rock; Age, dated; Age, dated standard deviation; Calendar age; Calendar age, standard deviation; Kasten corer; Age, 14C AMS; Age, 14C calibrated, CALIB 6.0 Reimer et al., 2009; CD159; Charles Darwin; Laplace; Reimer; Knudsen; Iceland; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.829696; https://doi.pangaea.de/10.1594/PANGAEA.829696

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. : All measurements were made using the species Globigerina bulloides.