noaa-ocean-8720
Came et al. 2008 Florida Current 27KYr Seawater Cadmium Data
Came, R.E.; Oppo, D.W.; Curry, W.B.; Lynch-Stieglitz, J.
Came et al. 2008 Florida Current 27KYr Seawater Cadmium Data
2009-12-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/8720
Investigator
R.E.
Came
Investigator
D.W.
Oppo
Investigator
W.B.
Curry
Investigator
J.
Lynch-Stieglitz
earth science
paleoclimate
paleoceanography
notes,null,null,null,null,paleoceanography,null,null,C,benthic species
earth science
paleoclimate
paleoceanography
delta 13C,Cibicidoides sp.,null,per mil PDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
cadmium,cadmium/calcium,null,nanomole per kilogram,null,climate reconstructions|paleoceanography,null,null,N,Hoeglundina elegans; seawater
earth science
paleoclimate
paleoceanography
age,null,null,calendar year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
cadmium,cadmium/calcium,null,nanomole per kilogram,null,climate reconstructions|paleoceanography,averaged,null,N,Hoeglundina elegans; seawater
earth science
paleoclimate
paleoceanography
delta 13C,Cibicidoides sp.,null,per mil,null,paleoceanography,averaged,null,N,null
earth science
paleoclimate
paleoceanography
number of samples,null,null,count,null,paleoceanography,null,null,N,Number of Cibicidoides spp. specimans in isotope analysis
earth science
paleoclimate
paleoceanography
delta 13C,benthic foraminifer,null,per mil,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,duplicate of NMR study?
earth science
paleoclimate
paleoceanography
delta 13C,benthic foraminifer,null,per mil,null,paleoceanography,averaged,null,N,null
earth science
paleoclimate
paleoceanography
delta 13C,Cibicidoides sp.,null,per mil,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
geochemistry
earth science
paleoclimate
paleocean
carbon isotopes
earth science
paleoclimate
paleocean
age control
geoscientificInformation
27784 cal yr BP
613 cal yr BP
Complete
24.216667
26.066667
-83.3
-78.033333
-1057
-751
Ocean
Atlantic Ocean
North Atlantic Ocean
OCE205-2-100GGC>LATITUDE 26.066667>LONGITUDE -78.033333
Ocean
Atlantic Ocean
North Atlantic Ocean
KNR166-2-31JPC>LATITUDE 24.216667>LONGITUDE -83.3
None
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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
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Came, R.E., D.W. Oppo, W.B. Curry, and J. Lynch-Stieglitz. 2008. Deglacial variability in the surface return flow of the Atlantic meridional overturning circulation. Paleoceanography, 23, PA1217.
Benthic foraminiferal Cd/Ca from a Florida Current sediment core documents the history of the northward penetration of southern source waters within the surface return flow of the Atlantic meridional overturning circulation (AMOC). Cd seawater estimates (CdW) indicate that intermediate‐depth southern source waters crossed the equator and contributed to the Florida Current during the Bølling-Allerød warm period of the last deglaciation, consistent with evidence of only a modest AMOC reduction compared to today. The CdW estimates also provide the first paleoceanographic evidence of a reduction in the influence of intermediate-depth southern source waters within the Florida Current during the Younger Dryas, a deglacial cold event characterized by a weak North Atlantic AMOC. Our results reveal a close correspondence between the northward penetration of intermediate-depth southern source waters and the influence of North Atlantic Deep Water, suggesting a possible link between intermediate-depth southern source waters and the strength of the Atlantic AMOC.
STUDY NOTES: Cd/Ca ratios were measured in the tests of the benthic foraminifer Hoeglundina elegans, which records bottom water Cd concentrations with a partition coefficient DP = [(Cd/Ca)foram/(Cd/Ca)water] ≈ 1.0 [Boyle et al., 1995]. The partition coefficient for the aragonitic species H. elegans is constant with depth, unlike the partition coefficients of calcitic foraminifera, which are depth dependent [Boyle, 1992]. A constant seawater Ca concentration of 0.01 mol kg−1 was assumed to estimate Cd water concentrations.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/knr31jpc-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/100ggc-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/came2008/came2008.txt
USA/NOAA
DIF
Version 9.8.4
2019-06-06
2019-06-06