noaa-ocean-22276 Eastern equatorial Atlantic trace metal, oxygen and carbon isotope data and bottom water temperature between 10 and 21 kyr BP Weldeab, S.; Friedrich, T.; Timmermann, A.; Schneider, R.R. Eastern equatorial Atlantic trace metal, oxygen and carbon isotope data and bottom water temperature between 10 and 21 kyr BP 2017-06-26 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22276 Investigator S. Weldeab Investigator T. Friedrich Investigator A. Timmermann Investigator R.R. Schneider earth science paleoclimate climate reconstructions|paleoceanography sea water temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,bottom water temperature calculated using Mg/Ca[mmol/mol]?=?(0.36?±?0.02)*BWT[°C]?+?2.22?±?0.19; r-squared=0.92 earth science paleoclimate climate reconstructions|paleoceanography sea water temperature,magnesium/calcium,unspecified error lower bound,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,bottom water temperature calculated using Mg/Ca[mmol/mol]?=?(0.36?±?0.02)*BWT[°C]?+?2.22?±?0.19; r-squared=0.92 earth science paleoclimate climate reconstructions|paleoceanography sea water temperature,magnesium/calcium,unspecified error upper bound,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,bottom water temperature calculated using Mg/Ca[mmol/mol]?=?(0.36?±?0.02)*BWT[°C]?+?2.22?±?0.19; r-squared=0.92 earth science paleoclimate climate reconstructions|paleoceanography delta 18O,delta 18O|magnesium/calcium|sea water,null,per mil SMOW,null,climate reconstructions|paleoceanography,null,null,N,bottom water earth science paleoclimate paleoceanography delta 13C,Cibicidoides pachyderma,null,per mil VPDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography age,null,null,calendar year before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography barium/calcium,Cibicidoides pachyderma,null,micromole per mole,null,paleoceanography,null,null,N,null earth science paleoclimate climate reconstructions|paleoceanography depth,null,null,centimeter,null,climate reconstructions|paleoceanography,null,null,N,null earth science paleoclimate climate reconstructions|paleoceanography delta 18O,delta 18O|magnesium/calcium|sea water,unspecified error lower bound,per mil SMOW,null,climate reconstructions|paleoceanography,null,null,N,bottom water earth science paleoclimate climate reconstructions|paleoceanography delta 18O,delta 18O|magnesium/calcium|sea water,unspecified error upper bound,per mil SMOW,null,climate reconstructions|paleoceanography,null,null,N,bottom water earth science paleoclimate paleoceanography magnesium/calcium,benthic foraminifer,null,millimole per mole,null,paleoceanography,null,null,N,globobulimina spp. earth science paleoclimate paleoceanography delta 18O,Cibicidoides pachyderma,null,per mil VPDB,null,paleoceanography,null,null,N,null earth science paleoclimate climate reconstructions|paleoceanography age,null,null,calendar year before present,null,climate reconstructions|paleoceanography,null,null,N,null earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean trace metals in carbonates earth science paleoclimate paleocean oxygen isotopes earth science paleoclimate paleocean radiogenic isotope earth science paleoclimate paleocean carbon isotopes earth science paleoclimate paleocean reconstruction geoscientificInformation Other Reconstruction 20605 cal yr BP 9984 cal yr BP Complete 2.502 2.502 9.395 9.395 -1295 -1295 Ocean Atlantic Ocean North Atlantic Ocean MD03-2707>LATITUDE 2.502>LONGITUDE 9.395 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 Weldeab, S., T. Friedrich, A. Timmermann, and R.R. Schneider 2016 Paleoceanography 31 1070-1083 10.1002/2016PA002957

We present a benthic foraminiferal multiproxy record of eastern equatorial Atlantic (EEA) middepth water (1295?m) covering the last deglacial. We show that EEA middepth water temperatures were elevated by 3.9?±?0.5°C and 5.2?±?1.2°C during Heinrich event 1 (H1) and Younger Dryas (YD), respectively. The radiocarbon content of the EEA middepth during H1 and YD is relatively low and comparable to the values of the pre-H1 episode and Bølling-Allerød, respectively. A transient Earth system model simulation, which mimics the observed deglacial Atlantic Meridional Overturning Circulation (AMOC) history, qualitatively reproduces the major features of the EEA proxy records. The simulation results suggest that fresh water-induced weakening of the AMOC leads to a vertical shift of the horizon of Southern Ocean-sourced water and a stronger influence of EEA sea surface temperatures via mixing. Our findings reaffirm the lack of a distinctive signature of radiocarbon depletion and therefore do not support the notion of interhemispheric exchanges of strongly radiocarbon-depleted middepth water across the tropical Atlantic during H1 and YD. Our temperature reconstruction presents a critical zonal and water depth extension of existing tropical Atlantic data and documents a large-scale and basin-wide warming across the thermocline and middepth of the tropical Atlantic during H1 and YD. Significant difference in the timing and pace of H1 middepth warming between tropical Atlantic and North Atlantic likely points to a limited role of the tropical Atlantic middepth warming in the rapid heat buildup in the North Atlantic middepth. STUDY NOTES: Provided Keywords: benthic foraminiferal trace metals, radio carbon, isotope record, last deglacial, Younger Dyras, Heinrich events 1, late glacial maximum

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/weldeab2016-poc/weldeab2016-poc-bwt.txt NOAA Template File; Mg/Ca and BWT Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/weldeab2016-poc/weldeab2016-poc-isobaca.txt NOAA Template File; d13C, d18O and Ba/Ca Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/weldeab2016-poc/weldeab2016-poc-d18osw.txt NOAA Template File; d18Osw Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/weldeab2016-poc/weldeab2016-poc-14c.txt NOAA Template File; 14C Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11