NOAA/WDS Paleoclimatology - Benthic Foraminiferal Porosity and Isotope Data from the Arabian Sea over the Past 30,000 Years
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organisationName: NOAA World Data Service for Paleoclimatology
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electronicMailAddress: paleo@noaa.gov
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dateStamp: 2023-09-01
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title: NOAA/WDS Paleoclimatology - Benthic Foraminiferal Porosity and Isotope Data from the Arabian Sea over the Past 30,000 Years
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date: 2023-05-10
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Anchor: DOI doi:10.25921/zwxy-5z84
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code: noaa-ocean-38042
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code: NCEI DSI 1200_02
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individualName: Lu, W.
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individualName: Lu, W.
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abstract: 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 Arabian Sea. The time period coverage is from 29600 to 0 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
purpose: Records 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.
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fileName: https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-ocean.png
fileDescription: Paleoclimatology - Paleoceanography
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descriptiveKeywords: (MD_Keywords)
keyword: Earth Science > Paleoclimate > Ocean/Lake Records
keyword: Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records
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title: Global Change Master Directory (GCMD) Science Keywords
date: (CI_Date)
date: 2020-01-09
dateType: (CI_DateTypeCode) publication
edition: 9.1
citedResponsibleParty: GCMD Landing Page (CI_ResponsibleParty)
organisationName: NASA Goddard Space Flight Center, Earth Science Data and Information System
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description: The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.
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keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > climate reconstructions|paleoceanography
keyword: earth science > paleoclimate > climate reconstructions|paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > climate reconstructions|paleoceanography
keyword: earth science > paleoclimate > climate reconstructions|paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleoceanography
keyword: earth science > paleoclimate > paleocean > other
keyword: earth science > paleoclimate > paleocean > oxygen isotopes
keyword: earth science > paleoclimate > paleocean > carbon isotopes
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keyword: What: porosity; Material: Cibicidoides sp.
keyword: What: porosity; Material: Cibicidoides sp.
keyword: What: delta 13C; Material: Globobulimina affinis
keyword: What: oxygen; Material: sea water
keyword: What: age; Material: null
keyword: What: delta 18O; Material: Globigerinoides ruber
keyword: What: sample identification; Material: null
keyword: What: delta 13C; Material: Cibicidoides wuellerstorfi
keyword: What: delta 18O; Material: Cibicidoides wuellerstorfi
keyword: What: age; Material: null
keyword: What: delta 18O; Material: Globobulimina affinis
keyword: What: delta 13C; Material: Globigerinoides ruber
keyword: What: number of samples; Material: null
keyword: What: notes; Material: null
keyword: What: depth; Material: null
keyword: What: oxygen; Material: sea water
keyword: What: delta 13C; Material: benthic foraminifer
keyword: What: depth; Material: null
type: (MD_KeywordTypeCode) theme
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title: Paleoenvironmental Standard Terms (PaST) Thesaurus
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keyword: Ocean > Indian Ocean > Arabian Sea > Core RC27-14 > LATITUDE 18.25 > LONGITUDE 57.66
keyword: Ocean > Indian Ocean > Arabian Sea > Core TN047-6GGC > LATITUDE 17.38 > LONGITUDE 58.8
keyword: Ocean > Indian Ocean > Arabian Sea > Core RC27-42 > LATITUDE 16.5 > LONGITUDE 59.8
keyword: Ocean > Indian Ocean > Arabian Sea > Core TN041-2PG > LATITUDE 17.7 > LONGITUDE 57.83
keyword: Ocean > Indian Ocean > Arabian Sea > Core RC27-23 > LATITUDE 17.99 > LONGITUDE 57.59
keyword: Ocean > Indian Ocean > Arabian Sea > Core RC27-61 > LATITUDE 16.63 > LONGITUDE 59.86
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keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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otherConstraints: Cite as: Lu, W. (2023-05-10): NOAA/WDS Paleoclimatology - Benthic Foraminiferal Porosity and Isotope Data from the Arabian Sea over the Past 30,000 Years. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/zwxy-5z84. Accessed [date].
resourceConstraints: Distribution Liability (MD_LegalConstraints)
accessConstraints: (MD_RestrictionCode) otherRestrictions
otherConstraints: 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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otherConstraints: 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.
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otherConstraints: None
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otherConstraints: 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.
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aggregateDataSetName: (CI_Citation)
title: Reconstructing the oxygen depth profile in the Arabian Sea during the last glacial period
date: (CI_Date)
date: 2023
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
individualName: Lu, W., Costa, K.M., Oppo, D.W.
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organisationName: Paleoceanography and Paleoclimatology
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linkage: https://doi.org/10.1029/2023PA004632
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name: Associated Reference published 2023
description: Lu, W., Costa, K.M., Oppo, D.W., 2023: Reconstructing the oxygen depth profile in the Arabian Sea during the last glacial period. Paleoceanography and Paleoclimatology, 38, , 10.1029/2023PA004632
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language: eng; USA
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extent: (EX_Extent)
description: Date Range: 29600 cal yr BP to 0 cal yr BP;
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westBoundLongitude: 57.59
eastBoundLongitude: 59.86
southBoundLatitude: 16.5
northBoundLatitude: 18.25
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TimePeriod:
beginPosition: -27650
endPosition: 1950
supplementalInformation: ABSTRACT SUPPLIED BY ORIGINATOR: Reconstructing the strength and depth boundary of oxygen minimum zones (OMZs) in the glacial ocean advances our understanding of how OMZs respond to climate changes. While many efforts have inferred better oxygenation of the glacial Arabian Sea OMZ from qualitative indices, oxygenation and vertical extent of the glacial OMZ is not well quantified. Here we present glacial-Holocene oxygen reconstructions in a depth transect of Arabian Sea cores ranging from 600 to 3,650 m water depths. We estimate glacial oxygen concentrations using benthic foraminiferal surface porosity and benthic carbon isotope gradient reconstructions. Compared to the modern Arabian Sea, glacial oxygen concentrations were approximately 10–15 μmol/kg higher in the shallow OMZ (<1,000 m), and 5–80 μmol/kg lower at greater depths (1,500–3,650 m). Our results suggest that the OMZ in the glacial Arabian Sea was slightly better oxygenated but remained in the upper 1,000 m. We propose that the small increase in oxygenation of the Arabian Sea OMZ during the last glacial period was due to weaker upper ocean stratification induced by stronger winter monsoon winds coupled with an increase in oxygen solubility due to lower temperatures, counteracting the effects of more oxygen consumption resulting from higher primary productivity. Large-scale changes in ocean circulation may have also contributed to better ventilation of the glacial Arabian Sea OMZ.
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fees: In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
orderingInstructions: Contact NCEI for other distribution options and instructions.
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