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    • A comprehensive global oceanic dataset of discrete measurements of helium isotope and tritium during the hydrographic cruises on various ships from 1952-10-21 to 2016-01-22 (NCEI Accession 0176626)

    Metadata Updated: November 1, 2023

    This dataset consists of global oceanic database of tritium and helium isotope measurements made by numerous researchers and laboratories over a period exceeding 60 years: from 1952-10-21 to 2016-01-22 in the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, Arctic Ocean, Mediterranean Sea, Baltic Sea, Black Sea. Tritium and helium isotope data provide key information on ocean circulation, ventilation, and mixing, as well as the rates of biogeochemical processes, and deep-ocean hydrothermal processes. The dataset includes approximately 60,000 valid tritium measurements, 63,000 valid helium isotope determinations, 57,000 dissolved helium concentrations, and 34,000 dissolved neon concentrations. Some quality control has been applied in that questionable data have been flagged and clearly compromised data excluded entirely. Appropriate metadata has been included: geographic location, date, and sample depth. When available, water temperature, salinity, and dissolved oxygen were included. Data quality flags and data originator information (including methodology) are also included.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date 2023-09-06T19:17:11Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date November 1, 2023
    Reference Date(s) October 10, 2018 (publication), March 14, 2019 (revision)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Dataset
    Metadata Date 2023-09-06T19:17:11Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date November 1, 2023
    Reference Date(s) October 10, 2018 (publication), March 14, 2019 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0176626
    Access Constraints Cite as: Jenkins, William J.; Doney, Scott C.; Fendrock, Michaela A.; Fine, Rana A.; Gamo, Toshitaka; Jean-Baptiste, Philippe; Key, Robert M.; Klein, Birgit; Lupton, John E.; Rhein, Monika; Roether, Wolfgang; Sano, Yuji; Schlitzer, Reiner; Schlosser, Peter; Swift, James H. (2018). A comprehensive global oceanic dataset of discrete measurements of helium isotope and tritium during the hydrographic cruises on various ships from 1952-10-21 to 2016-01-22 (NCEI Accession 0176626). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/c1sn-9631. 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.
    Bbox East Long 180
    Bbox North Lat 90
    Bbox South Lat -82.38
    Bbox West Long -179.98
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0176626
    Graphic Preview Type PNG
    Harvest Object Id 04383017-42d2-458c-946b-bc26341c8793
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-179.98, -82.38], [180.0, -82.38], [180.0, 90.0], [-179.98, 90.0], [-179.98, -82.38]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1952-10-21
    Temporal Extent End 2016-01-22

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