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    • The NOAA NCEI Global Marine Microplastics Harmonized Database during 1972-04-20 to present (NCEI Accession 0306475)

    Metadata Updated: December 1, 2025

    This database contains a harmonized subset of variables from the NOAA NCEI Marine Microplastics collection, which is used to generate the accompanying ArcGIS map. It includes microplastic concentration data (i.e., plastics measuring less than 5 mm; units of pieces/m3 for microplastics in water and beach, pieces/kg d.w. for microplastics in sediment, and pieces/ 10 mins for nurdles) in ocean water, sediments, beach and Nurdle Patrol from across the globe during 1972-04-20 to present. The dataset contains information on date of collection, latitude and longitude where data was collected, sampling instruments used for collection, mesh size, microplastic concentration class range, and links to publications on the data. It is updated on a Federal quarterly schedule.

    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 2025-11-13T13:11:09Z
    Metadata Created Date September 2, 2025
    Metadata Updated Date December 1, 2025
    Reference Date(s) August 7, 2025 (publication)
    Frequency Of Update quarterly

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Dataset
    Metadata Date 2025-11-13T13:11:09Z
    Metadata Created Date September 2, 2025
    Metadata Updated Date December 1, 2025
    Reference Date(s) August 7, 2025 (publication)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0306475
    Access Constraints Cite as: Nyadjro, Ebenezer; Webster, Jennifer; Boyer, Tim; Cebrian, Just; Collazo, Leonard; Kaltenberger, Gunnar; Larsen, Kirsten; Lau, Yee; Mickle, Paul; Toft, Tiffany; Wang, Zhankun (2025). The NOAA NCEI Global Marine Microplastics Harmonized Database during 1972-04-20 to present (NCEI Accession 0306475). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/v8gj-k896. 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 179.854333
    Bbox North Lat 89.7614
    Bbox South Lat -71.69904
    Bbox West Long -179.9942
    Coupled Resource
    Frequency Of Update quarterly
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0306475
    Graphic Preview Type PNG
    Harvest Object Id b4b29618-509b-44d9-a2b0-707a89e0b806
    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": [[[-179.9942, -71.69904], [179.854333, -71.69904], [179.854333, 89.7614], [-179.9942, 89.7614], [-179.9942, -71.69904]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1972-04-20
    Temporal Extent End 2023-02-12

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