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GCMD Combined Keywords

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This vocabulary combines all of the constituent keyword sets of the Global Change Master Directory (GCMD).

The Global Change Master Directory (GCMD) Keywords are a hierarchical set of controlled Earth Science vocabularies that help ensure Earth science data and services are described in a consistent and comprehensive manner and allow for the precise searching of collection-level metadata and subsequent retrieval of data and services. The categories of GCMD Keywords are as follows.

  • Earth Science and Earth Science Services
  • Data Centers
  • Projects
  • Instruments/Sensors
  • Platforms/Sources
  • Locations
  • Horizontal Data Resolution
  • Vertical Data Resolution
  • Temporal Data Resolution
  • URL Content Types
  • Chronostratigraphic Units
  • Measurement Name
  • Granule Data Format

Please note: the above list contains the most common categories. Since version 9.1, there are additional categories which are not being republished in Research Vocabularies Australia. For more information, please see the GCMD Keywords documentation page.

The categories are also published individually; please see the related vocabularies.

Any person or organization may request an addition, modification or deletion to the keywords. A requester can be from the user community, a provider of metadata to GCMD, or any other GCMD stakeholder.

Further information is available in the Governance and community guide and at the GCMD Keywords Community Forum.

Generic information about the GCMD keywords follows:

The keywords help facilitate the classification and discovery of Earth Science data by providing a rich vocabulary for characterizing the data. The GCMD keywords are used by hundreds of data providers worldwide for categorizing the ~33,000 records stored in the Common Metadata Repository.

For more information about the keywords and how to access them, please visit the Keyword Landing Page. The GCMD User Support staff can be reached at gsfc-gcmduso@mail.nasa.gov. Questions can also be directed to Valerie Dixon at valerie.dixon@nasa.gov.

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Created
2014

Acronym
GCMD-Combined

Publisher
National Aeronautics and Space Administration

Language(s)
English

Notes

The RDF data in this vocabulary has been modified by ARDC as follows:

  • Triples have been added to express skos:hasTopConcept and skos:topConceptOf relations.
  • Triples have been added for the concept scheme(s) to provide suitable values for the rdf:type, skos:prefLabel, and dcterms:title properties.

NASA request that specific citation information be included whenever individuals and groups make use of the GCMD Keywords in any form of publication. For the specific text of the citation information to be included, please see the version notes for each individual version.

For general information about ARDC support for the publication of the GCMD Keywords, please see the GCMD Keywords documentation page.

Do you have feedback about "GCMD Combined Keywords"? Let the us know by getting in touch.

You can also Subscribe to Updates to be notified by email when updates are made to this vocabulary.

Linked Data API

SPARQL Endpoint
https://test.vocabs.ardc.edu.au/repository/api/sparql/ardc-curated_gcmd-combined_20-2-2025-01-02
Open SPARQL Endpoint in YASGUI

To learn about SPARQL read the SPARQL Endpoint documentation.

Version 20.2 is the second incremental release since Version 20.0.

Citation information: Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 20.2. 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%20Keywords

ARDC note 2: the GCMD "Fast-Track" process allows for the addition of keywords to a release without changing the release's version number. Such concepts do not appear in the release's change summary document. To find out about "Fast-Track" changes, please visit the GCMD Keywords community forum using the link above.

Linked Data API

SPARQL Endpoint
https://test.vocabs.ardc.edu.au/repository/api/sparql/ardc-curated_gcmd-combined_19-4-2024-10-03
Open SPARQL Endpoint in YASGUI

To learn about SPARQL read the SPARQL Endpoint documentation.

Version 19.4 is the forth incremental release since Version 19.0.

Citation information: Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 17.5. 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%20Keywords

ARDC note 2: the GCMD "Fast-Track" process allows for the addition of keywords to a release without changing the release's version number. Such concepts do not appear in the release's change summary document. To find out about "Fast-Track" changes, please visit the GCMD Keywords community forum using the link above.

Linked Data API

SPARQL Endpoint
https://test.vocabs.ardc.edu.au/repository/api/sparql/ardc-curated_gcmd-combined_18-1-2024-04-02
Open SPARQL Endpoint in YASGUI

To learn about SPARQL read the SPARQL Endpoint documentation.

Version 18.1 is the first incremental release since Version 18.0.

Citation information: Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 18.1. 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%20Keywords

ARDC note: the GCMD "Fast-Track" process allows for the addition of keywords to a release without changing the release's version number. Such concepts do not appear in the release's change summary document. To find out about "Fast-Track" changes, please visit the GCMD Keywords community forum using the link above.

Linked Data API

SPARQL Endpoint
https://test.vocabs.ardc.edu.au/repository/api/sparql/ardc-curated_gcmd-combined_17-5-2024-01-08
Open SPARQL Endpoint in YASGUI

To learn about SPARQL read the SPARQL Endpoint documentation.

Version 17.5 is the fifth incremental release since Version 17.0.

Citation information: Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 17.5. 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%20Keywords

ARDC note 1: From Version 10.0, the base URL of the Keywords has been changed. Therefore, the IRIs of all resources are different from those used in Version 9.

ARDC note 2: the GCMD "Fast-Track" process allows for the addition of keywords to a release without changing the release's version number. Such concepts do not appear in the release's change summary document. To find out about "Fast-Track" changes, please visit the GCMD Keywords community forum using the link above.

Linked Data API

SPARQL Endpoint
https://test.vocabs.ardc.edu.au/repository/api/sparql/ardc-curated_gcmd-combined_16-3-2023-07-03
Open SPARQL Endpoint in YASGUI

To learn about SPARQL read the SPARQL Endpoint documentation.

Version 16.3 is the third incremental release since Version 16.0.

Version 16.3 is the latest in a series of minor, incremental updates since 14.4.

Citation information: Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 16.3. 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%20Keywords

ARDC note 1: From Version 10.0, the base URL of the Keywords has been changed. Therefore, the IRIs of all resources are different from those used in Version 9.

ARDC note 2: the GCMD "Fast-Track" process allows for the addition of keywords to a release without changing the release's version number. Such concepts do not appear in the release's change summary document. To find out about "Fast-Track" changes, please visit the GCMD Keywords community forum using the link above.

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    <input type="text" id="gcmd-combined" name="gcmd-combined" value="" size="80" autocomplete="off">
    <script>
        $("#gcmd-combined").vocab_widget({
        mode: 'search',
        cache: false,
        repository:  https://test.vocabs.ardc.edu.au/repository/api/lda/ardc-curated/gcmd-combined/8-6-2019-01-10/20-2-2025-01-02
        target_field: 'label',
        endpoint: 'https://dev-rva-nectar.ardc.edu.au/apps/vocab_widget/proxy/'
    });
    </script>

Vocabulary Subjects

Subjects used to describe this vocabulary.

EARTH SCIENCES

Related Vocabularies

Other vocabularies related to this vocabulary.

Is associated with: GCMD Project Keywords
Is associated with: GCMD Platform/Sources Keywords
Is associated with: GCMD Instrument/Sensors Keywords
Is associated with: GCMD Measurement Name Keywords
Is associated with: GCMD URL Content Types Keywords
Is associated with: GCMD Granule Data Format Keywords
Is associated with: GCMD Data Center Keywords
Is associated with: GCMD Locations Keywords

Community Usage

Used by

Used by DCCEEW, GA, IMOS, NCI, and TERN.

Examples of Use

DCCEEW use this vocabulary to describe data from the Australian Antarctic Data Centre (AADC).

GA and IMOS use this vocabulary to provide high level keywords to describe data.

NCI use this vocabulary to describe data sets.

TERN use this vocabulary to gather high level keywords about data published as part of the collection level metadata.

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