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    • Global subsurface ocean acidification indicators at depth levels of 50, 100, and 200 meters from 1750-01-01 to 2100-12-31 (NCEI Accession 0287573)

    Metadata Updated: March 1, 2026

    This data package contains 10 global subsurface ocean acidification (OA) indicators at standardized depth levels of 50, 100, and 200 meters. The indicators include fugacity of carbon dioxide, pH on the total scale, total hydrogen ion content, free hydrogen ion content, carbonate ion content, aragonite saturation state, calcite saturation state, Revelle Factor, total dissolved inorganic carbon content, and total alkalinity content. They are presented on a global ocean grid of 1° × 1°, as decadal averages spanning from preindustrial conditions (1750) through historical conditions (1850–2010) and projected into five future scenarios defined by Shared Socioeconomic Pathways (SSP1-2.6, SSP2-4.5, SSP3-7.0, and SSP5-8.5) from 2020 to 2100. These OA indicators were generated by following the same approach as described by Jiang et al. (2023) (https://doi.org/10.1029/2022MS003563), and utilized data from 14 Earth System Models (ESMs) from the Coupled Model Intercomparison Project Phase 6 (CMIP6), as well as a gridded data product provided by Lauvset et al. (2016) (https://doi.org/10.5194/essd-8-325-2016). The median and standard deviation values stored as Excel files in the "Median_Std_subsurface" folder were area-averaged values under the IPCC business-as-usual Scenario, i.e., SSP5-8.5.

    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 2025-11-29T08:01:56Z
    Metadata Created Date February 1, 2025
    Metadata Updated Date March 1, 2026
    Reference Date(s) February 1, 2024 (publication), April 25, 2025 (revision), January 25, 2024 (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 2025-11-29T08:01:56Z
    Metadata Created Date February 1, 2025
    Metadata Updated Date March 1, 2026
    Reference Date(s) February 1, 2024 (publication), April 25, 2025 (revision), January 25, 2024 (creation)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0287573
    Access Constraints Cite as: Jiang, Li-Qing (2024). Global subsurface ocean acidification indicators at depth levels of 50, 100, and 200 meters from 1750-01-01 to 2100-12-31 (NCEI Accession 0287573). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/vdnc-q403. 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 19.5
    Bbox North Lat 89.5
    Bbox South Lat -89.5
    Bbox West Long 20.5
    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:0287573
    Graphic Preview Type PNG
    Harvest Object Id be2cfb0f-d38b-43c6-ba41-4e2dc0969bce
    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": [[[20.5, -89.5], [19.5, -89.5], [19.5, 89.5], [20.5, 89.5], [20.5, -89.5]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1750-01-01
    Temporal Extent End 2100-12-31

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