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    • Discrete bottle dissolved inorganic carbon (DIC), total alkalinity (Talk), water temperature and salinity validation data for the First Landing MAPCO2 system located in the mouth of the Chesapeake Bay, North Atlantic Ocean (36.9981 N, -76.0873 W) from 2018-05-02 to 2020-10-06 (NCEI Accession 0250708)

    Metadata Updated: February 1, 2026

    This dataset contains discrete bottle sample data for total Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TAlk), water temperature and salinity samples, collected for validation and internal consistency analyses at the First Landing MAPCO2 system in the mouth of the Chesapeake Bay (36.9981 N, -76.0873 W). Samples were collected and immediately preserved with 0.2 µL of saturated Mercuric Chloride from 2018-05-02 to 2020-10-06. Samples were transported to the Cai-Laboratory at the University of Delaware for analysis. DIC is analyzed via a nondispersive infrared laser LICOR analyzer after 1 ml of 10% H3PO4 is injected into the sample and the CO2 gas is “stripped” out. TAlk is measured via Gran titration with HCl to an end-point of pH 3.2. The method precision is >0.1%. This effort was conducted in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP).

    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 2025-11-29T07:43:47Z
    Metadata Created Date March 17, 2023
    Metadata Updated Date February 1, 2026
    Reference Date(s) April 1, 2022 (publication), March 29, 2022 (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 2025-11-29T07:43:47Z
    Metadata Created Date March 17, 2023
    Metadata Updated Date February 1, 2026
    Reference Date(s) April 1, 2022 (publication), March 29, 2022 (creation)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0250708
    Access Constraints Cite as: Cai, Wei-Jun; Wilson, Doug; Reimer, Janet J. (2022). Discrete bottle dissolved inorganic carbon (DIC), total alkalinity (Talk), water temperature and salinity validation data for the First Landing MAPCO2 system located in the mouth of the Chesapeake Bay, North Atlantic Ocean (36.9981 N, -76.0873 W) from 2018-05-02 to 2020-10-06 (NCEI Accession 0250708). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/3saq-tn32. 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 -76.0873
    Bbox North Lat 36.9981
    Bbox South Lat 36.9981
    Bbox West Long -76.0873
    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:0250708
    Graphic Preview Type PNG
    Harvest Object Id 527e3ed3-fa18-4454-9640-3232eca8fb74
    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": "Point", "coordinates": [-76.0873, 36.9981]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2018-05-02
    Temporal Extent End 2020-10-06

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