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title | What Are the GCMD Keywords? |
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Global Change Master Directory (GCMD) Keywords are a hierarchical set of controlled Earth Science vocabularies that help ensure Earth science data, services, and variables are described in a consistent and comprehensive manner and allow for the precise searching of metadata and subsequent retrieval of data, services, and variables. Initiated over twenty years ago, GCMD Keywords are periodically analyzed for relevancy and will continue to be refined and expanded in response to user needs. The categories of GCMD Keywords are as follows. - Earth Science
- Earth Science Services
- Data Centers/Service Providers
- Projects
- Instruments/Sensors
- Platforms/Sources
- Locations
- Horizontal Data Resolution
- Vertical Data Resolution
- Temporal Data Resolution
- URL Content Types
- Granule Data Formats
- Measurement Names
- Chronostratigraphic Units
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title | How Do I Submit |
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a Keyword Request or Issue? |
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submit a keyword request (addition or modification) the submitter should: |
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Review the controlled keyword requirements/guidelines
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- State the proposed keyword
- Provide a definition of the keyword
- State the rationale for the keyword addition or modification
Review the keyword requirements (criteria used when determining what constitutes a well-curated keyword list)
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Verify that the keyword does
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not already exists by checking the keywords in the Keyword Directory and search for the keyword
Once the above |
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steps have been completed, submit the request to support@earthdata.nasa.gov. or post to the forum. The submitter will be notified of their submission status and when the keyword change has been made.
Other keyword issues/questions should be posted to the keyword forum. |
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title | How Long Will It Take for My Keyword To Be Reviewed? |
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Fast-Track Keywords: Full-Review Keywords The keyword submitter will be notified whether their keyword is considered a fast-track or full review. |
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title | How Do I Access |
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The GCMD Keywords are accessible |
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: http://gcmdservices.gsfc.nasa.gov/static/kms/ Dynamic RESTful Service http://gcmdservices.gsfc.nasa.gov/kms/capabilities -
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How Do I Cite the GCMD Keywords |
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A citation should be referenced when using the GCMD controlled keywords in scientific literature, websites, software tools, etc. Please cite the |
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The GCMD Keywords should be cited |
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keyword as:
Global Change Master Directory (GCMD). |
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20152024. GCMD Keywords, Version |
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81. Global Change Data Center, Science and Exploration DirectorateEarth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA). URL |
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:httpgcmdlearn/keywords.html