Subpolar North Atlantic mid-Pleistocene Faunal Census and SST Data Wright, A.K.; Flower, B.P. Wright, A.K. Flower, B.P. earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,null,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,transfer function technique) earth science/paleoclimate/paleoceanography (Globorotalia crassaformis,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (Globorotalia inflata,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified foraminifer,null,null,percent,null,paleoceanography,null,null,N,Globigerinita uvula) earth science/paleoclimate/paleoceanography (ice rafted debris,null,null,count per gram,null,paleoceanography,null,null,N,count per gram of dry sediment) earth science/paleoclimate/paleoceanography (Neogloboquadrina pachyderma sinistral,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified foraminifer,null,null,percent,null,paleoceanography,null,null,N,Orbulina sp.) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,null,null,degree Celsius,summer,climate reconstructions|paleoceanography,null,modern analogue technique,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Cibicidoides wuellerstorfi,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified foraminifer,null,communality,dimensionless,null,paleoceanography,null,null,N,communality of foram assemblage factor analysis) earth science/paleoclimate/paleoceanography (Globigerina bulloides,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified foraminifer,null,null,percent,null,paleoceanography,null,null,N,Globorotalia scitula) earth science/paleoclimate/paleoceanography (Globorotalia truncatulinoides,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,Cibicidoides wuellerstorfi,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (ice rafted debris,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,null,null,degree Celsius,winter,climate reconstructions|paleoceanography,null,null,N,transfer function technique) earth science/paleoclimate/paleoceanography (identified foraminifer,null,null,percent,null,paleoceanography,null,null,N,Turborotalita quinqueloba) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified foraminifer,null,null,percent,null,paleoceanography,null,null,N,Globigerinita glutinata) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,null,null,degree Celsius,winter,climate reconstructions|paleoceanography,null,modern analogue technique,N,cold season) earth science/paleoclimate/paleoceanography (Globigerinella siphonifera,null,null,percent,null,paleoceanography,null,null,N,Unaccepted name: Globigerinella aequilateralis) earth science/paleoclimate/paleoceanography (Globigerinoides ruber,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (Neogloboquadrina pachyderma dextral,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (ODP 980>LATITUDE 55.48>LONGITUDE -14.7) (ODP 984>LATITUDE 61.43>LONGITUDE -24.08) We investigated surface and deep ocean variability in the subpolar North Atlantic from 1000 to 500 thousand years ago (ka) based on two Ocean Drilling Program (ODP) sites, Feni drift site 980 (55°29'N, 14°42'W) and Bjorn drift site 984 (61°25'N, 24°04'W). Benthic foraminiferal stable isotope data, planktic foraminiferal faunas, ice-rafted debris data, and faunally based sea-surface temperature estimates help test the hypothesis that oceanographic changes in the North Atlantic region were associated with the onset of the 100-kyr world during the mid-Pleistocene revolution. Based on percentage of Neogloboquadrina pachyderma (s) records from both sites, surface waters during interglacials and glacials were cooler in the mid-Pleistocene than during marine isotope stages (MIS) 5 and 6. In particular, interglaciations at Bjorn drift site 984 were significantly cooler. Faunal evidence suggests that the interglacial Arctic front shifted from a position between the two sites to a position northwest of Bjorn drift site 984 after ca. 610 ka. As during the late Pleistocene, we find faunal evidence for lagging surface warmth at most of the glacial initiations during the mid-Pleistocene. Each initiation is associated with high benthic d13C values that are maintained into the succeeding glaciation, which we term ŋlagging NADW production.ŋ These findings indicate that lagging warmth and lagging NADW production are robust features of the regional climate system that persist in the middle to late Pleistocene. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Wright, A.K. Investigator : Flower, B.P. 2002-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/9034 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wright2002 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp980-w-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp984-w-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wright2002 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp980-w-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp984-w-tab.txt English https://www.ncdc.noaa.gov/paleo/study/9034 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wright2002 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp980-w-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp984-w-tab.txt Wright, A.K., and B.P. Flower. 2002. Surface and deep ocean circulation in the subpolar North Atlantic during the mid-Pleistocene revolution. Paleoceanography, 17(4), 1068. START YEAR: 992640 14C yr BP * END YEAR: 501000 14C yr BP -24.08 55.48 -14.7 61.43