(Table S1) Age determination of sediment core RAPiD-21-03K

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 hi...

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Bibliographic Details
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 2011
Subjects:
Age
14C AMS
14C calibrated
CALIB 6.0 (Reimer et al.
2009)
dated
dated standard deviation
Calendar age
standard deviation
CD159
Charles Darwin
DEPTH
sediment/rock
KAL
Kasten corer
RAPiD-21-03K
Sample code/label
South of Iceland
Laplace
Reimer
Iceland
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.829696
https://doi.org/10.1594/PANGAEA.829696
Description
Summary: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.

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