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Annually-resolved North Atlantic marine climate over the last millennium

Reynolds, David J., Scourse, J.D., Halloran, P.R., Nederbragt, A., Wanamaker, A.D., Butler, P.G., Richardson, C.A., Heinemeier, J., Eiriksson, J., Knudsen, K. L. and Hall, Ian R. 2016. Annually-resolved North Atlantic marine climate over the last millennium. Nature Communications 7 , 13502 (2016). 10.1038/ncomms13502

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Abstract

Owing to the lack of absolutely dated oceanographic information before the modern instrumental period, there is currently significant debate as to the role played by North Atlantic Ocean dynamics in previous climate transitions (for example, Medieval Climate Anomaly-Little Ice Age, MCA-LIA). Here we present analyses of a millennial-length, annually resolved and absolutely dated marine d18O archive.We interpret our record of oxygen isotope ratios from the shells of the long-lived marine bivalve Arctica islandica (d18O-shell), from the North Icelandic shelf, in relation to seawater density variability and demonstrate that solar and volcanic forcing coupled with ocean circulation dynamics are key drivers of climate variability over the last millennium. During the pre-industrial period (AD 1000–1800) variability in the sub-polar North Atlantic leads changes in Northern Hemisphere surface air temperatures at multi-decadal timescales, indicating that North Atlantic Ocean dynamics played an active role in modulating the response of the atmosphere to solar and volcanic forcing

Item Type: Article
Date Type: Publication
Status: Published
Schools: Earth and Ocean Sciences
Subjects: Q Science > QE Geology
Publisher: Nature Publishing Group
ISSN: 2041-1723
Funders: NERC
Date of First Compliant Deposit: 14 October 2016
Date of Acceptance: 10 October 2016
Last Modified: 13 May 2019 14:47
URI: http://orca.cf.ac.uk/id/eprint/95332

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