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NOAA/WDS Paleoclimatology - South Atlantic 24,000 Year Neodymium Isotope Data

browse graphicPaleoclimatology - Paleoceanography
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of South Atlantic Ocean. The time period coverage is from 24300 to 2100 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
  • Cite as: Howe, J.N.W.; Piotrowski, A.; Oppo, D.W.; Huang, K.-F.; Mulitza, S.; Chiessi, C.M.; Blusztajn, J. (2016-10-27): NOAA/WDS Paleoclimatology - South Atlantic 24,000 Year Neodymium Isotope Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/5grq-5616. Accessed [date].
  • Please refer to Credit tab for full citation information.
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DistributorNOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Data Center Contact
NOAA World Data Service for Paleoclimatology
828-271-4800
paleo@noaa.gov
Coverage DescriptionDate Range: 24300 cal yr BP to 2100 cal yr BP;
Time Period-22350 to -150
Spatial Bounding Box Coordinates
N: -27.18
S: -27.5167
E: -46.4
W: -46.4667
Spatial Coverage Map
General Documentation
Associated Resources
  • Antarctic intermediate water circulation in the South Atlantic over the past 25,000 years
    • Associated Reference published 2016
      Jacob N.W. Howe, Alexander M. Piotrowski, Delia W. Oppo, Kuo-Fang Huang, Stefan Mulitza, Cristiano M. Chiessi, Jurek Blusztajn, 2016: Antarctic intermediate water circulation in the South Atlantic over the past 25,000 years. Paleoceanography, , , 10.1002/2016PA002975
Publication Dates
  • publication: 2016-10-27
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress StatusComplete - production of the data has been completed
Data Update Frequency Data update frequency not available
Supplemental Information
STUDY NOTES: Neodymium isotope (143Nd/144Nd and eNd) data from three South Atlantic sediment cores. For all three cores, measurements on uncleaned planktonic foraminifera are provided. For GEOB2107-3 and GEOB2104-3, measurements on leachates are also provided.
ABSTRACT SUPPLIED BY ORIGINATOR: Antarctic Intermediate Water is an essential limb of the Atlantic meridional overturning circulation that redistributes heat and nutrients within the Atlantic Ocean. Existing reconstructions have yielded conflicting results on the history of Antarctic Intermediate Water penetration into the Atlantic across the most recent glacial termination. In this study we present leachate, foraminiferal, and detrital neodymium isotope data from three intermediate-depth cores collected from the southern Brazil margin in the South Atlantic covering the past 25 kyr. These results reveal that strong chemical leaching following decarbonation does not extract past seawater neodymium composition in this location. The new foraminiferal records reveal no changes in seawater Nd isotopes during abrupt Northern Hemisphere cold events at these sites. We therefore conclude that there is no evidence for greater incursion of Antarctic Intermediate Water into the South Atlantic during either the Younger Dryas or Heinrich Stadial 1. We do, however, observe more radiogenic Nd isotope values in the intermediate-depth South Atlantic during the mid-Holocene. This radiogenic excursion coincides with evidence for a southward shift in the Southern Hemisphere westerlies that may have resulted in a greater entrainment of radiogenic Pacific-sourced water during intermediate water production in the Atlantic sector of the Southern Ocean. Our intermediate-depth records show similar values to a deglacial foraminiferal Nd isotope record from the deep South Atlantic during the Younger Dryas but are clearly distinct during the Last Glacial Maximum and Heinrich Stadial 1, demonstrating that the South Atlantic remained chemically stratified during Heinrich Stadial 1.
PurposeRecords of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations.
Dataset Citation
  • Cite as: Howe, J.N.W.; Piotrowski, A.; Oppo, D.W.; Huang, K.-F.; Mulitza, S.; Chiessi, C.M.; Blusztajn, J. (2016-10-27): NOAA/WDS Paleoclimatology - South Atlantic 24,000 Year Neodymium Isotope Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/5grq-5616. Accessed [date].
  • 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.
Cited Authors
  • Howe, J.N.W.
  • Piotrowski, A.
  • Oppo, D.W.
  • Huang, K.-F.
  • Mulitza, S.
  • Chiessi, C.M.
  • Blusztajn, J.
Originators
  • Howe, J.N.W.
  • Piotrowski, A.
  • Oppo, D.W.
  • Huang, K.-F.
  • Mulitza, S.
  • Chiessi, C.M.
  • Blusztajn, J.
Publishers
  • NOAA National Centers for Environmental Information
Theme keywordsGlobal Change Master Directory (GCMD) Science Keywords
  • Earth Science > Paleoclimate > Ocean/Lake Records
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records
Global Change Master Directory (GCMD) Science Keywords
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleocean > other
  • Meridional Overturning Circulation (MOC)
Paleoenvironmental Standard Terms (PaST) Thesaurus
  • What: epsilon neodymium; Material: sediment
  • What: epsilon neodymium; Material: sediment
  • What: epsilon neodymium; Material: sediment
  • What: age; Material: null
  • What: epsilon neodymium; Material: planktic foraminifer
  • What: 143Nd/144Nd; Material: sediment
  • What: epsilon neodymium; Material: planktic foraminifer
  • What: 143Nd/144Nd; Material: planktic foraminifer
  • What: epsilon neodymium; Material: sediment
  • What: 143Nd/144Nd; Material: sediment
  • What: depth; Material: null
Data Center keywordsGlobal Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Place keywords
  • Ocean > Atlantic Ocean > South Atlantic Ocean > GeoB2107-3 > LATITUDE -27.18 > LONGITUDE -46.45
  • Ocean > Atlantic Ocean > South Atlantic Ocean > KNR159-5-36GGC > LATITUDE -27.5167 > LONGITUDE -46.4667
  • Ocean > Atlantic Ocean > South Atlantic Ocean > GeoB2104-3 > LATITUDE -27.3 > LONGITUDE -46.4
Use Constraints
  • Cite as: Howe, J.N.W.; Piotrowski, A.; Oppo, D.W.; Huang, K.-F.; Mulitza, S.; Chiessi, C.M.; Blusztajn, J. (2016-10-27): NOAA/WDS Paleoclimatology - South Atlantic 24,000 Year Neodymium Isotope Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/5grq-5616. Accessed [date].
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
  • 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.
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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Last Modified: 2023-09-01
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