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NOAA/WDS Paleoclimatology - Eastern Equatorial Pacific Nitrogen Data during the mid-Pleistocene Transition

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 Pacific Ocean. The time period coverage is from 1234770 to 59790 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: Robinson, R.S. (2019-06-24): NOAA/WDS Paleoclimatology - Eastern Equatorial Pacific Nitrogen Data during the mid-Pleistocene Transition. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/8d8r-3b15. Accessed [date].
  • Please refer to Credit tab for full citation information.
noaa-ocean-27050
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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: 1234770 cal yr BP to 59790 cal yr BP;
Time Period-1232820 to -57840
Spatial Bounding Box Coordinates
N: -3.095
S: -3.095
E: -90.81833
W: -90.81833
Spatial Coverage Map
General Documentation
Associated Resources
  • A cool, nutrient-enriched eastern equatorial Pacific during the mid-Pleistocene transition
    • Associated Reference published 2019
      Robinson, R.S., C.A. Jones, R.P. Kelly, P. Rafter, J. Etourneau, and P. Martinez, 2019: A cool, nutrient-enriched eastern equatorial Pacific during the mid-Pleistocene transition. Geophysical Research Letters, 46, , 10.1029/2018GL081315
Publication Dates
  • publication: 2019-06-24
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: Measurement precision- %TN: 0.01%; d15N: 0.3 per mil. Provided Keywords: equatorial Pacific, upwelling, nitrogen isotopes, mid-Pleistocene transition
ABSTRACT SUPPLIED BY ORIGINATOR: The emergence of high-amplitude, low-frequency glacial-interglacial cycles during the mid-Pleistocene climate transition (MPT; 800-1,200 ka) is associated with global cooling. In the eastern equatorial Pacific, sea surface temperatures cooled, and the upwelling-induced cold tongue expanded significantly during the MPT. Here we use sedimentary records of iron, biogenic silica, and nutrient-nitrogen consumption to evaluate biogeochemical changes hypothesized to accompany the cold tongue expansion. Our results suggest that the eastern equatorial Pacific of the MPT hosted surface waters with higher nitrate contents and biogenic silica production relative to the last 600 ka. Increased production occurred despite low iron supply. We attribute this to enhanced upwelling and nutrient enrichment of thermocline waters, both likely related to the northward migration of Southern Ocean fronts. The return of these fronts to their southward positions after the MPT may be associated with stronger drawdown of nutrients and, potentially, atmospheric CO2 in the Southern Ocean.
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: Robinson, R.S. (2019-06-24): NOAA/WDS Paleoclimatology - Eastern Equatorial Pacific Nitrogen Data during the mid-Pleistocene Transition. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/8d8r-3b15. 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
  • Robinson, R.S.
Originators
  • Robinson, R.S.
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 > paleocean > nitrogen isotopes
Paleoenvironmental Standard Terms (PaST) Thesaurus
  • What: depth; Material: null
  • What: depth; Material: null
  • What: age; Material: null
  • What: sample identification; Material: null
  • What: nitrogen; Material: sediment
  • What: depth; Material: null
  • What: age; Material: null
  • What: delta 15N; Material: sediment
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 > Pacific Ocean > South Pacific Ocean > ODP 846 > LATITUDE -3.095 > LONGITUDE -90.81833
Use Constraints
  • Cite as: Robinson, R.S. (2019-06-24): NOAA/WDS Paleoclimatology - Eastern Equatorial Pacific Nitrogen Data during the mid-Pleistocene Transition. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/8d8r-3b15. 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.
  • None
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Last Modified: 2023-09-01
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