Agulhas Bank Stable Isotope and Mg/Ca Data and SST Reconstruction During the Past 80,000 Years Dyez, K.A.; Zahn, R.; Hall, I.R. Dyez, K.A. Zahn, R. Hall, I.R. Sea Surface Temperature Reconstruction earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,null) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerinoides ruber white,null,millimole per mole,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (sample identification,null,null,null,null,paleoceanography,null,null,C,null) earth science/paleoclimate/climate reconstructions|paleoceanography (delta 18O,delta 18O|magnesium/calcium|sea water,null,per mil SMOW,null,climate reconstructions|paleoceanography,anomalized,null,N,Delta delta 18O seawater using Bemis et al.(1998)) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,using Anand et al.(2003); Mg/Ca Globigerinoides ruber white) earth science/paleoclimate/paleoceanography (delta 18O,Globigerinoides ruber white,null,per mil VPDB,null,paleoceanography,null,null,N,250-355 µm) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Globigerinoides ruber white,null,per mil VPDB,null,paleoceanography,null,null,N,250-355 µm) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (MD02-2594>LATITUDE -34.71>LONGITUDE 17.338333) New high-resolution sea surface temperature (SST) and sea surface salinity (SSS) estimates are presented from the Agulhas Bank slope in the Atlantic sector of the Agulhas Corridor using planktic foraminiferal (Globigerinoides ruber) d18O and Mg/Ca-derived SST. By focusing on the last 80,000 years, this is the first fine-scale Agulhas leakage record that overlaps in time with much of the Greenland ice core record of abrupt climate changes in the North Atlantic region. The multicentennial profiles indicate instances of warm SST and/or increased SSS coincident with Northern Hemisphere cool periods, followed by Northern Hemisphere warming. These periods of enhanced SST and SSS in the Agulhas Corridor occur at the last glacial termination (T1) and during North Atlantic cold episodes associated with Heinrich (H) meltwater events. To a first-order approximation, the timing of maximal salinity events in relation to periods of North Atlantic freshwater pertu rbation is consistent with the concept suggested by climate models that enhanced Agulhas leakage provides for buoyancy compensation and can potentially trigger increased convective activity in the North Atlantic, thereby restoring Atlantic overturning circulation after relatively weak states. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Dyez, K.A. Investigator : Zahn, R. Investigator : Hall, I.R. 2015-01-30 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17935 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/dyez2014/dyez2014.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/dyez2014/dyez2014.txt English https://www.ncdc.noaa.gov/paleo/study/17935 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/dyez2014/dyez2014.txt Dyez, K.A., R. Zahn, and I.R. Hall2014Multicentennial Agulhas leakage variability and links to North Atlantic climate during the past 80,000 yearsPaleoceanography291238-124810.1002/2014PA002698 START YEAR: 80117 cal yr BP * END YEAR: 177 cal yr BP 17.338333 -34.71 17.338333 -34.71