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    • Surface underway seawater and marine boundary layer observations of partial pressure of carbon dioxide (pCO2), water temperature, salinity and other parameters made during the M/V Seaspan Royal cruises in the coastal waters of British Columbia, Canada from 2022-07-01 to 2022-12-20 (NCEI Accession 0276518)

    Metadata Updated: December 1, 2025

    This dataset consists of surface underway measurements collected from the M/V Seaspan Royal as it transited the coastal waters of British Columbia, Canada from 2022-07-01 to 2022-12-20. Seawater was drawn from a depth of 2.5 m to a Sunburst SuperCO2 system and ancillary sensors from Sea-Bird Scientific. Measurements of temperature, salinity, dissolved oxygen content, and CO2 partial pressure were made every 2 seconds on seawater flowing through the system and instruments, and these data were logged by the SuperCO2 system. Seawater was delivered from the intake to analytical equipment using an AMT 1/2 HP pump (4295-98). Temperature and salinity data were collected using a Fluke thermometer (model 1523) with thermistor probe (model 5610) in the equilibrator, a Sea-Bird SBE 45 MicroTSG Thermosalinograph, and a SBE 38 Digital Oceanographic Thermometer at the seawater intake. Dissolved oxygen content was measured using a SBE63 oxygen optode. Raw oxygen measurements (with salinity reference = 0) were corrected for salt content following the approach provided with the SBE63 Manual revision 010. CO2 measurements were made with a LI-COR LI850 non-dispersive infrared detector housed with the SuperCO2 system. Standardization of the CO2 measurements was achieved through the measurement of four gas standards (Linde; 98.83 ppm, 386.30 ppm, 469.69 ppm, and 1248.45 ppm) that had undergone re-calibration using a zero (N2) and span gas (ESRL; 1567.44 ppm) bracketing the gas standard concentrations. A standardization sequence (measurement of each gas standard sequentially for a period of 90 seconds) was conducted every 4 or 12 hours (over different periods of the data record) and included a 90-second measurement period of atmospheric CO2 partial pressure on air drawn to the system from an intake on the aft deck. The final 20 seconds of atmospheric measurements were retained in the final dataset. Position and weather information (from an Airmax 120WX Weatherstation instrument positioned above the bridge) were logged separately from the SuperCO2 system data, and then merged with the SuperCO2 system data by time-matching the position and weather data to the SuperCO2 system data. This project was supported by the Tula Foundation and Seaspan.

    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 2025-11-29T07:44:51Z
    Metadata Created Date March 17, 2023
    Metadata Updated Date December 1, 2025
    Reference Date(s) February 9, 2023 (publication), January 18, 2024 (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 2025-11-29T07:44:51Z
    Metadata Created Date March 17, 2023
    Metadata Updated Date December 1, 2025
    Reference Date(s) February 9, 2023 (publication), January 18, 2024 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0276518
    Access Constraints Cite as: Evans, Wiley; Pocock, Katie; Barrette, Jessy; Davis, Chris (2023). Surface underway seawater and marine boundary layer observations of partial pressure of carbon dioxide (pCO2), water temperature, salinity and other parameters made during the M/V Seaspan Royal cruises in the coastal waters of British Columbia, Canada from 2022-07-01 to 2022-12-20 (NCEI Accession 0276518). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/8sbq-6w75. 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 -122.6
    Bbox North Lat 56
    Bbox South Lat 48
    Bbox West Long -134.4
    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:0276518
    Graphic Preview Type PNG
    Harvest Object Id c27a0f92-a8cf-486e-b755-2fac3f901b65
    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": [[[-134.4, 48.0], [-122.6, 48.0], [-122.6, 56.0], [-134.4, 56.0], [-134.4, 48.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2022-07-01
    Temporal Extent End 2022-12-20

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