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    • Quality-controlled sea surface marine physical, meteorological and other in situ measurements from the NCEI Surface Underway Marine Database (NCEI-SUMD)

    Metadata Updated: November 1, 2025

    This collection contains global in-situ sea surface underway measurements from the NOAA NCEI Surface Underway Marine Database (NCEI-SUMD, formerly the NCEI Thermosalinograph Database). The database was originally developed to facilitate understanding and access to a set of quality controlled in-situ sea surface temperature (SST) and salinity (SSS) measurements collected by thermosalinographs (TSG). The database was later expanded to include surface underway non-TSG data, such as meteorological data from the vessel-mounted meteorological packages, microplastics data and data from Unmanned Surface vehicles, such as Saildrones and Wave Gliders. Data were in situ underway data collected by thermosalinographs (TSG), meteorological packages and other sensors from 1989 to the present from more than 450 platforms. These data are from multiple data assembly centers, including the Center for Ocean-Atmospheric Prediction Studies (COAPS; TSG data from the Shipboard Automated Meteorological and Oceanographic System (SAMOS)), Institut français de recherche pour l'exploitation de la mer (IFREMER; English: French Research Institute for Exploitation of the Sea; TSG data from The Global Ocean Surface Underway Data (GOSUD)), Atlantic Oceanographic & Meteorological Laboratory (AOML-TSG data) and NOAA National Centers for Environmental Information (NCEI). When duplicate data were found with different resolution, the data with the highest sampling resolution were selected. All data were converted to common netCDF format, following the Climate and Forecast (CF) and Attribute Convention for Data Discovery (ACDD) conventions and following the NCEI netCDF 2.0 trajectory feature type. All data were processed using the same 11-step quality control procedures and criteria and flagged using a two-level flag system to provide a well-organized, uniformly quality-controlled TSG dataset for the user community.

    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 2025-10-20T06:50:48Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date November 1, 2025
    Reference Date(s) May 23, 2017 (publication), October 20, 2025 (revision)
    Frequency Of Update monthly

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Series
    Metadata Date 2025-10-20T06:50:48Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date November 1, 2025
    Reference Date(s) May 23, 2017 (publication), October 20, 2025 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:NCEI-SUMD
    Access Constraints Cite as: Wang, Zhankun; NOAA National Centers for Environmental Information (2017). Quality-controlled sea surface marine physical, meteorological and other in situ measurements from the NCEI Surface Underway Marine Database (NCEI-SUMD). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/NCEI-SUMD. 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 180
    Bbox North Lat 90
    Bbox South Lat -89.61
    Bbox West Long -180
    Coupled Resource
    Frequency Of Update monthly
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:NCEI-SUMD
    Graphic Preview Type PNG
    Harvest Object Id afddf568-e933-4075-9af2-82b3a2af0228
    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": [[[-180.0, -89.61], [180.0, -89.61], [180.0, 90.0], [-180.0, 90.0], [-180.0, -89.61]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1986-05-23

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