noaa-ocean-20448 North Icelandic Shelf Annually Resolved d18O Data Over the Last Millennium Reynolds, D.J.; Scourse, J.D.; Halloran, P.R.; Nederbragt, A.; Wanamaker, A.D.; Butler, P.G.; Richardson, C.A.; Heinemeier, J.; Eiríksson, J.; Knudsen, K.L.; Hall, I.R. North Icelandic Shelf Annually Resolved d18O Data Over the Last Millennium 2016-08-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/20448 Investigator D.J. Reynolds Investigator J.D. Scourse Investigator P.R. Halloran Investigator A. Nederbragt Investigator A.D. Wanamaker Investigator P.G. Butler Investigator C.A. Richardson Investigator J. Heinemeier Investigator J. Eiríksson Investigator K.L. Knudsen Investigator I.R. Hall earth science paleoclimate paleoceanography delta 18O,bivalve,null,per mil VPDB,null,paleoceanography,null,null,N,Arctica islandica; Mar-Oct earth science paleoclimate paleoceanography age,null,null,year Common Era,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean oxygen isotopes geoscientificInformation 953 AD 2000 AD 997 cal yr BP -50 cal yr BP Complete 66.5265 66.5265 -18.195667 -18.195667 -80 -80 Ocean Atlantic Ocean North Atlantic Ocean Grimsey, North Icelandic Shelf>LATITUDE 66.5265>LONGITUDE -18.195667 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Reynolds, D.J., J.D. Scourse, P.R. Halloran, A. Nederbragt, A.D. Wanamaker, P.G. Butler, C.A. Richardson, J. Heinemeier, J. Eiríksson, K.L. Knudsen, and I.R. Hall 2016 Nature Communications 10.1038/NCOMMS13502

Due to the lack of absolutely-dated oceanographic information prior to the modern instrumental period, there is currently significant debate as to the role played by North Atlantic Ocean dynamics in previous climate transitions (e.g., Medieval Climate Anomaly-Little Ice Age, MCA-LIA). Here we present analyses of a millennial-length, annually-resolved and absolutely-dated marine ?18O archive. Our record of oxygen isotope ratios in the shell of the long-lived marine bivalve Arctica islandica (?18O-shell), from the North Icelandic Shelf, linked to seawater density variability, 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. STUDY NOTES: Precision of d18O measurements: 0.08 per mil. Provided Keywords: Arctica islandica, annually-resolved, absolutely-dated, North Atlantic, Iceland

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/reynolds2016/reynolds2016.txt Formatted Text File; N. Icelandic Shelf d18O Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11