Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

Return to search results

Global ocean climatological dataset of 17 thermohaline parameters derived from WOA-2023 (NCEI Accession 0290372)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: February 28, 2026 | Last Modified: 2024-03-22T00:00:00.000+00:00
This is the global ocean climatological dataset of 17 thermohaline parameters along with 2 identity-indices for determining isothermal layer (ITL) depth (ILD) and mixed layer depth (MLD) from gridded (0.25 degree, 1 degree, 5 degree) temperature and salinity fields of the National Centers for Environmental Information (NCEI) world ocean atlas 2023. The exponential leap-forward gradient method is used to identify (ILD, MLD) as well as mean thermocline and pycnocline gradients at each horizontal grid point. With the given (ILD, MLD) and mean thermocline and pycnocline gradients, other parameters such as ITL heat content, mixed layer fresh-water content, ITL temperature, mixed layer density, temperature jump, density jump, maximum thermocline gradient, thermocline depth, temperature at thermocline depth, maximum density gradient, pycnocline depth, density at pycnocline depth, ILD minus MLD. The quality measure (I- index) is provided. The data of (ILD, MLD, as well as their derived parameters) are flagged out with the I-index smaller than 0.5. All derived parameters are calculated from WOA-2023 objectively analyzed profile data. Results are in NetCDF.

Resources

16 resources available

  • NCEI Dataset Landing Page

    PLACEHOLDER/VALUE
    Download

  • Descriptive Information

    PLACEHOLDER/VALUE
    Download

  • HTTPS

    PLACEHOLDER/VALUE
    Download

  • FTP

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1175/2010jtecho742.1

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1175/1520-0485(2002)032%3C3299:eoabli%3E2.0.co;2

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1029/97jc00444

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1175/1520-0426(1999)016%3C0613:agmftb%3E2.0.co;2

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1175/1520-0426(2000)017%3C0971:dovtsf%3E2.0.co;2

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1175/2010jtecho804.1

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1007/s10872-011-0019-2

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1007/s10872-017-0418-0

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.1038/s41597-019-0125-3

    PLACEHOLDER/VALUE
    Download

  • https://doi.org/10.25921/dgak-7a43

    PLACEHOLDER/VALUE
    Download

  • GCMD Keyword Forum Page

    PLACEHOLDER/VALUE
    Download

  • NCEI Contact Information

    PLACEHOLDER/VALUE
    Download

Find Related Datasets

Click any tag below to search for similar datasets

0290372 MIXED LAYER DEPTH SALINITY THERMOCLINE DEPTH WATER DENSITY bathythermograph - MBT bathythermograph - XBT buoy - moored buoy CTD profiling float derived products model output physical NOAA National Centers for Environmental Information US Navy/Naval Postgraduate School World-Wide Distribution oceanography DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOD/USNAVY/NPS > Naval Postgraduate School, U.S. Navy, U.S. Department of Defense EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN MIXED LAYER EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > THERMOCLINE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY 17 thermohaline parameters Density Below MLD - Density at MLD Density at Pycnocline Depth(depth at maximum gradient) Fresh Water Content ILD minus MLD Identification Index of Isothermal Layer Depth Identification Index of Mixed Layer Depth Isothermal Layer Depth Isothermal Layer Heat Content with the reference density 1025kg/m^3 Maximum Density Gradient on Pycnocline (drho/dz) Maximum Gradient on Thermocline Mean Gradient on Pycnocline (drho/dz) Mixed Layer Depth (of Density) Pycnocline Depth(depth at maximum gradient) Temperature at ILD - Temperature Below ILD Temperature at Thermocline Depth Thermocline Depth (depth of maximum gradient) Vertical Average Density in Mixed Layer Vertical Average Temperature in ITL (Isothermal Layer) same as WOA23 CTD > Conductivity, Temperature, Depth MBT > Mechanical Bathythermographs XBT > Expendable Bathythermographs same as WOA23 GEOGRAPHIC REGION > GLOBAL OCEAN NL6W3X

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
                                            {
  "fn": "NOAA National Centers for Environmental Information",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:ncei.info@noaa.gov"
}
describedByType application/octet-steam
description This is the global ocean climatological dataset of 17 thermohaline parameters along with 2 identity-indices for determining isothermal layer (ITL) depth (ILD) and mixed layer depth (MLD) from gridded (0.25 degree, 1 degree, 5 degree) temperature and salinity fields of the National Centers for Environmental Information (NCEI) world ocean atlas 2023. The exponential leap-forward gradient method is used to identify (ILD, MLD) as well as mean thermocline and pycnocline gradients at each horizontal grid point. With the given (ILD, MLD) and mean thermocline and pycnocline gradients, other parameters such as ITL heat content, mixed layer fresh-water content, ITL temperature, mixed layer density, temperature jump, density jump, maximum thermocline gradient, thermocline depth, temperature at thermocline depth, maximum density gradient, pycnocline depth, density at pycnocline depth, ILD minus MLD. The quality measure (I- index) is provided. The data of (ILD, MLD, as well as their derived parameters) are flagged out with the I-index smaller than 0.5. All derived parameters are calculated from WOA-2023 objectively analyzed profile data. Results are in NetCDF.
distribution 
                                            [
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Dataset Landing Page",
    "mediaType": "placeholder/value",
    "description": "Navigate directly to the URL for a descriptive web page with download links.",
    "downloadURL": "https://doi.org/10.25921/qjqz-g416",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Descriptive Information",
    "mediaType": "placeholder/value",
    "description": "Navigate directly to the URL for a descriptive web page with download links.",
    "downloadURL": "https://www.ncei.noaa.gov/archive/accession/oas/290372",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "HTTPS",
    "mediaType": "placeholder/value",
    "description": "Navigate directly to the URL for data access and direct download.",
    "downloadURL": "https://www.ncei.noaa.gov/archive/accession/download/290372",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "FTP",
    "mediaType": "placeholder/value",
    "description": "These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).",
    "downloadURL": "ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0226/0290372/",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1175/2010jtecho742.1",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1175/2010jtecho742.1",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1175/1520-0485(2002)032%3C3299:eoabli%3E2.0.co;2",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1175/1520-0485(2002)032%3C3299:eoabli%3E2.0.co;2",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1029/97jc00444",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1029/97jc00444",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1175/1520-0426(1999)016%3C0613:agmftb%3E2.0.co;2",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1175/1520-0426(1999)016%3C0613:agmftb%3E2.0.co;2",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1175/1520-0426(2000)017%3C0971:dovtsf%3E2.0.co;2",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1175/1520-0426(2000)017%3C0971:dovtsf%3E2.0.co;2",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1175/2010jtecho804.1",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1175/2010jtecho804.1",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1007/s10872-011-0019-2",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1007/s10872-011-0019-2",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1007/s10872-017-0418-0",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1007/s10872-017-0418-0",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.1038/s41597-019-0125-3",
    "mediaType": "placeholder/value",
    "description": "Related journal article",
    "downloadURL": "https://doi.org/10.1038/s41597-019-0125-3",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.25921/dgak-7a43",
    "mediaType": "placeholder/value",
    "description": "Related dataset",
    "downloadURL": "https://doi.org/10.25921/dgak-7a43",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GCMD Keyword Forum Page",
    "mediaType": "placeholder/value",
    "description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
    "downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
    "describedByType": "application/octet-steam"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Contact Information",
    "mediaType": "placeholder/value",
    "description": "Information for contacts at NCEI.",
    "downloadURL": "https://www.ncei.noaa.gov/contact",
    "describedByType": "application/octet-steam"
  }
]
identifier gov.noaa.nodc:0290372
issued 2024-03-21T00:00:00.000+00:00
keyword 
                                            [
  "0290372",
  "MIXED LAYER DEPTH",
  "SALINITY",
  "THERMOCLINE DEPTH",
  "WATER DENSITY",
  "bathythermograph - MBT",
  "bathythermograph - XBT",
  "buoy - moored buoy",
  "CTD",
  "profiling float",
  "derived products",
  "model output",
  "physical",
  "NOAA National Centers for Environmental Information",
  "US Navy/Naval Postgraduate School",
  "World-Wide Distribution",
  "oceanography",
  "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
  "DOD/USNAVY/NPS > Naval Postgraduate School, U.S. Navy, U.S. Department of Defense",
  "EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN MIXED LAYER",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > THERMOCLINE",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
  "17 thermohaline parameters",
  "Density Below MLD - Density at MLD",
  "Density at Pycnocline Depth(depth at maximum gradient)",
  "Fresh Water Content",
  "ILD minus MLD",
  "Identification Index of Isothermal Layer Depth",
  "Identification Index of Mixed Layer Depth",
  "Isothermal Layer Depth",
  "Isothermal Layer Heat Content with the reference density 1025kg/m^3",
  "Maximum Density Gradient on Pycnocline (drho/dz)",
  "Maximum Gradient on Thermocline",
  "Mean Gradient on Pycnocline (drho/dz)",
  "Mixed Layer Depth (of Density)",
  "Pycnocline Depth(depth at maximum gradient)",
  "Temperature at ILD - Temperature Below ILD",
  "Temperature at Thermocline Depth",
  "Thermocline Depth (depth of maximum gradient)",
  "Vertical Average Density in Mixed Layer",
  "Vertical Average Temperature in ITL (Isothermal Layer)",
  "same as WOA23",
  "CTD > Conductivity, Temperature, Depth",
  "MBT > Mechanical Bathythermographs",
  "XBT > Expendable Bathythermographs",
  "same as WOA23",
  "GEOGRAPHIC REGION > GLOBAL OCEAN",
  "NL6W3X"
]
landingPage https://www.ncei.noaa.gov/contact
language 
                                            []
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2024-03-22T00:00:00.000+00:00
publisher 
                                            {
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
references 
                                            [
  "https://doi.org/10.1175/2010jtecho742.1",
  "https://doi.org/10.1175/1520-0485(2002)032%3C3299:eoabli%3E2.0.co;2",
  "https://doi.org/10.1029/97jc00444",
  "https://doi.org/10.1175/1520-0426(1999)016%3C0613:agmftb%3E2.0.co;2",
  "https://doi.org/10.1175/1520-0426(2000)017%3C0971:dovtsf%3E2.0.co;2",
  "https://doi.org/10.1175/2010jtecho804.1",
  "https://doi.org/10.1007/s10872-011-0019-2",
  "https://doi.org/10.1007/s10872-017-0418-0",
  "https://doi.org/10.1038/s41597-019-0125-3",
  "https://doi.org/10.25921/dgak-7a43"
]
rights otherRestrictions
spatial 180.0,-90.0,-180.0,90.0
temporal 1955-01-01T00:00:00+00:00/2022-12-31T00:00:00+00:00
title Global ocean climatological dataset of 17 thermohaline parameters derived from WOA-2023 (NCEI Accession 0290372)

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov