19.4 2024-10-03
current
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18.1 2024-04-02
superseded
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17.5 2024-01-08
superseded
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16.3 2023-07-03
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15.2 2023-01-16
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14.4 2022-10-04
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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.
Languages
English
Notes
The RDF data in this vocabulary has been modified by ARDC as follows:
- Triples have been added to express
skos:hasTopConcept
andskos:topConceptOf
relations. - Triples have been added for the concept scheme(s) to provide suitable values for the
rdf:type
,skos:prefLabel
, anddcterms: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.
Concept |
Example: Search for and select concepts in this vocabulary
<input type="text" id="gcmd-combined" name="gcmd-combined" value="" size="80" autocomplete="off"> <script> $("#gcmd-combined").vocab_widget({ mode: 'search', cache: false, repository: 'http://vocabs.ardc.edu.au/repository/api/lda/ardc-curated/gcmd-combined/19-4-2024-10-03', target_field: 'label', endpoint: 'https://vocabs.ardc.edu.au/apps/vocab_widget/proxy/' }); </script>