Labrador Current Sea Surface Temperature Reconstruction over the last 2000 years Sicre, M.-A.; Weckström, K.; Seidenkrantz, M.-S.; Kuijpers, A.; Benetti, M.; Massé, G.; Ezat, U.; Schmidt, S.; Bouloubassi, I.; Olsen, J.; Khodri, M.; Mignot, J. Sicre, M.-A. Weckström, K. Seidenkrantz, M.-S. Kuijpers, A. Benetti, M. Massé, G. Ezat, U. Schmidt, S. Bouloubassi, I. Olsen, J. Khodri, M. Mignot, J. Sea Surface Temperature Reconstruction earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,alkenone unsaturation index,null,degree Celsius,spring,climate reconstructions|paleoceanography,null,null,N,Calibration: PRA1988; Alkenone calibration to SST (Prahl et al. 1988) late spring) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,null) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,alkenone unsaturation index,null,degree Celsius,spring,climate reconstructions|paleoceanography,null,null,N,Calibration: PRA1988; Alkenone calibration to SST (Prahl et al. 1988) early spring) earth science/paleoclimate/paleoceanography (age,null,null,year Common Era,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean (AI07-12G and AI07-11BC>LATITUDE 47.183>LONGITUDE -54.575) (AI07-03G and AI07-04BC>LATITUDE 48.733>LONGITUDE -53.483) The ice-loaded Labrador Current (LC) is an important component of the western North Atlantic circulation that influences the position and strength of the northern limb of the North Atlantic Current (NAC). This flow of cold and fresh Polar Waters originating from the Arctic has a marked impact on the North Atlantic climate, yet little is known about its variability beyond the instrumental period. In this study, we present the first sub-decadal alkenone-based 2000-year long sea-surface temperature (SST) records from the western Labrador Sea, a climatically crucial region at the boundary between the LC and the NAC. Our results show a clear link between the LC strength and the Northern Annular Mode (NAM),with a stronger NAM and a more vigorous LC during the Medieval Climate Anomaly (MCA). This suggests enhanced LC activity upon future global warming with implications for the Atlantic Meridional overturning circulation (AMOC). STUDY NOTES: SST based on alkenones in the flow past of the Labrador Current; SST variability strongly linked to the Northern Annular Mode with +NaM giving low SST. AI07-12G (47.133 N, 54.55 W) and AI07-11BC (47.233 N, 54.6 W) are from Placentia Bay, southeastern Newfoundland. AI07-03G and AI07-04BC are from Bonavista Bay, northeastern Newfoundland. Provided Keywords: Sea surface temperature, alkenones, Northern Annular Mode, Labrador Current Strength, Gulf Stream, Atlantic Meridional Overturning Circulation (AMOC), Little Ice Age, Medieval Climate Anomaly, seesaw pattern, 2000 years NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Sicre, M.-A. Investigator : Weckström, K. Investigator : Seidenkrantz, M.-S. Investigator : Kuijpers, A. Investigator : Benetti, M. Investigator : Massé, G. Investigator : Ezat, U. Investigator : Schmidt, S. Investigator : Bouloubassi, I. Investigator : Olsen, J. Investigator : Khodri, M. Investigator : Mignot, J. 2015-01-12 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17716 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/sicre2014/sicre2014-03g-04bc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/sicre2014/sicre2014-12g-11bc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/sicre2014/sicre2014-03g-04bc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/sicre2014/sicre2014-12g-11bc.txt English https://www.ncdc.noaa.gov/paleo/study/17716 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/sicre2014/sicre2014-03g-04bc.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/sicre2014/sicre2014-12g-11bc.txt Sicre, M.-A., K. Weckström, M.-S. Seidenkrantz, A. Kuijpers, M. Benetti, G. Massé, U. Ezat, S. Schmidt, I. Bouloubassi, J. Olsen, M. Khodri, J. Mignot2014Labrador current variability over the last 2000 yearsEarth and Planetary Science Letters40026-3210.1016/j.epsl.2014.05.016 START YEAR: 6000 cal yr BP * END YEAR: -56 cal yr BP -54.6 47.133 -53.483 48.733