Bermuda Rise High Resolution 60-25KYrBP Uranium Series Data Henry, L.G.; McManus, J.F.; Curry, W.B.; Roberts, N.; Piotrowski, A.; Keigwin, L.D. Henry, L.G. McManus, J.F. Curry, W.B. Roberts, N. Piotrowski, A. Keigwin, L.D. Meridional Overturning Circulation (MOC) earth science/paleoclimate/paleoceanography (calcium,sediment,null,count per second,null,paleoceanography,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleoceanography (calcium carbonate,sediment,null,percent,null,paleoceanography,null,x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,meter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (titanium,sediment,null,count per second,null,paleoceanography,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleoceanography (titanium/calcium,sediment,null,dimensionless,null,paleoceanography,null,null,N,natural logorithm) earth science/paleoclimate/paleoceanography (delta 13C,Globigerinoides ruber,null,per mil,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Cibicidoides wuellerstorfi|Nuttallides umbonifera,null,per mil,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Cibicidoides wuellerstorfi|Nuttallides umbonifera,null,per mil,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (231Pa/230Th excess,sediment,two standard deviations,dimensionless,null,paleoceanography,null,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,alkenone unsaturation index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (231Pa/230Th excess,sediment,null,dimensionless,null,paleoceanography,null,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,NGRIP age) earth science/paleoclimate/paleoceanography (delta 18O,Globigerinoides ruber,null,per mil,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean (KNR191-CDH19>LATITUDE 33.69>LONGITUDE -57.58) The most recent ice age was characterized by rapid and hemispherically asynchronous climate oscillations, whose origin remains unresolved. Variations in oceanic meridional heat transport may contribute to these repeated climate changes, which were most pronounced during marine isotope stage 3, the glacial interval 25 thousand to 60 thousand years ago. We examined climate and ocean circulation proxies throughout this interval at high resolution in a deep North Atlantic sediment core, combining the kinematic tracer protactinium/thorium (Pa/Th) with the deep water-mass tracer, epibenthic d13C. These indicators suggest reduced Atlantic overturning circulation during every cool northern stadial, with the greatest reductions during episodic Hudson Strait iceberg discharges, while sharp northern warming followed reinvigorated overturning. These results provide direct evidence for the ocean's persistent, central role in abrupt glacial climate change. STUDY NOTES: Pa/Th, carbonate, and stable isotope data collected from bulk sediment in Bermuda Rise sediment core KNR191 CDH19 covering 60-25 ka NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Henry, L.G. Investigator : McManus, J.F. Investigator : Curry, W.B. Investigator : Roberts, N. Investigator : Piotrowski, A. Investigator : Keigwin, L.D. 2016-08-16 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/20248 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016benth.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016carb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016pa-th.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016plank.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016ca-ti.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016sst.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016benth.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016carb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016pa-th.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016plank.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016ca-ti.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016sst.txt English https://www.ncdc.noaa.gov/paleo/study/20248 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016benth.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016carb.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016pa-th.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016plank.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016ca-ti.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/henry2016/henry2016sst.txt L.G. Henry, J.F. McManus, W.B. Curry, N.L. Roberts, A.M. Piotrowski, L.D. Keigwin2016North Atlantic ocean circulation and abrupt climate change during the last glaciationScience3536298470-47410.1126/science.aaf5529http://science.sciencemag.org/content/353/6298/470 START YEAR: 163310 cal yr BP * END YEAR: 570 cal yr BP -57.58 33.69 -57.58 33.69