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    • Nutrient, chlorophyll, oxygen, and others taken by CTD water samples from the USCGC Healy, cruise HE1702, in the Bering and Chukchi Seas from 2017-08-26 to 2017-09-15 (NCEI Accession 0231437)

    Metadata Updated: November 1, 2023

    This dataset contains nutrient, chlorophyll, oxygen, and others taken by CTD water samples from the USCGC Healy, cruise HE1702, in the Bering and Chukchi Seas, and the Arctic Ocean. Discrete water samples from 141 CTD casts were collected in the Chukchi Sea from US Coast Guard Cutter Healy (HE1702, August 26 to September 15, 2017) as part of the 2017 Distributed Biological Observatory – Northern Chukchi Integrated Study (DBO-NCIS). The goal of DBO-NCIS was to document and understand ongoing changes to the Pacific-Arctic ecosystem in light of the changing physical drivers. Sampling and transects on this research cruise were along standard DBO lines in areas 1, 3, 4 and 5.

    Nutrients and chlorophyll samples were collected at all process stations in support of benthic studies and net tows. A total of 410 nutrient samples were collected, filtered, and stored frozen at -80 degrees C. They were processed post-cruise at the Pacific Marine Environmental Laboratory (PMEL) for determination of nitrate, nitrite, ammonium, silicate and phosphate concentrations. Total chlorophyll was collected at 71 stations at standard depths of surface, 10 m, 20 m, 30 m, 40 m, and 50 m or bottom depth when stations were shallower than any standard depth. Samples were filtered through GF/F glass fiber filters under low vacuum, and the filters were stored frozen at -80 degrees C. Samples were analyzed at NOAA/PMEL. For calibration of the CTD oxygen probe, 48 samples were samples collected for dissolved oxygen. See data type descriptions for more processing details. Data have been submitted in csv format with a 1-line header defining columns. Related profile data from CTD instruments were processed and are available at WHOI.

    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.

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    Dates

    Metadata Date 2023-08-30T13:17:02Z
    Metadata Created Date June 25, 2021
    Metadata Updated Date November 1, 2023
    Reference Date(s) May 3, 2021 (publication)
    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 2023-08-30T13:17:02Z
    Metadata Created Date June 25, 2021
    Metadata Updated Date November 1, 2023
    Reference Date(s) May 3, 2021 (publication)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0231437
    Access Constraints Cite as: Mordy, Calvin W.; Stabeno, Phyllis J. (2021). Nutrient, chlorophyll, oxygen, and others taken by CTD water samples from the USCGC Healy, cruise HE1702, in the Bering and Chukchi Seas from 2017-08-26 to 2017-09-15 (NCEI Accession 0231437). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/s1z2-gt63. 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 -157.1
    Bbox North Lat 73.6
    Bbox South Lat 62
    Bbox West Long -175.3
    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:0231437
    Graphic Preview Type PNG
    Harvest Object Id 5a039af9-bba7-4311-bf61-2e053b900190
    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": [[[-175.3, 62.0], [-157.1, 62.0], [-157.1, 73.6], [-175.3, 73.6], [-175.3, 62.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2017-08-28
    Temporal Extent End 2017-09-09

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