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    • High-resolution vertical nitrate profiles from the CTD rosette-mounted submersible ultraviolet nitrate analyzer over the Northeast U.S. Shelf since February 2019 (NCEI Accession 0297573)

    Metadata Updated: March 1, 2026

    This dataset contains high-quality high-resolution nitrate data collected from a submersible ultraviolet nitrate analyzer (SUNA) mounted on the CTD rosette. Both raw and bias-corrected, quality-controlled data are included. The raw data include the instrument's estimate of nitrate concentration with dark values and light intensity at 256 wavelengths. Our quality-controlled SUNA nitrate data have an accuracy of 0.34-0.78 micromoles per liter, with a precision of 0.08-0.21 micromoles per liter, at a vertical resolution of 1 m. These data are collected from about 21 routinely occupied stations along a cross-shelf transect spanning southward from Martha's Vineyard, MA to just beyond the shelf break onboard the seasonal Northeast U.S. Shelf Long-Term Ecological Research (NES-LTER) survey cruises since February 2019. Data in CSV format.

    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 2025-08-29T21:37:17Z
    Metadata Created Date February 1, 2025
    Metadata Updated Date March 1, 2026
    Reference Date(s) September 25, 2024 (publication), September 23, 2024 (creation)
    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 2025-08-29T21:37:17Z
    Metadata Created Date February 1, 2025
    Metadata Updated Date March 1, 2026
    Reference Date(s) September 25, 2024 (publication), September 23, 2024 (creation)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0297573
    Access Constraints Cite as: Zheng, Bofu; Crockford, E. Taylor; Morkeski, Kate; Sosik, Heidi M. (2024). High-resolution vertical nitrate profiles from the CTD rosette-mounted submersible ultraviolet nitrate analyzer over the Northeast U.S. Shelf since February 2019 (NCEI Accession 0297573). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/8pea-z372. 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 -70.3366
    Bbox North Lat 41.3239
    Bbox South Lat 39.7646
    Bbox West Long -71.3096
    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:0297573
    Graphic Preview Type PNG
    Harvest Object Id 757b2eb9-596b-4e34-ae55-263ffdcfe66b
    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": [[[-71.3096, 39.7646], [-70.3366, 39.7646], [-70.3366, 41.3239], [-71.3096, 41.3239], [-71.3096, 39.7646]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2019-02-03
    Temporal Extent End 2023-08-12

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