Keywords

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Keywords are mandatory elements in FGDC and ISO metadata standards. We recommend using controlled vocabularies whenever possible. This can enable identification of disparate data with similar or identical subject matter.
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== Keyword Lists ==
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*[[ISO 19115 Topic Categories]]
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*[http://gcmd.gsfc.nasa.gov/Resources/valids/archives/keyword_list.html NASA/GCMD Keywords] Vocabulary lists for science, data centers, satellites, instruments, locations, etc.
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*[http://cf-pcmdi.llnl.gov/documents/cf-standard-names/2/cf-standard-name-table.html CF Standard Name Table]
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*[http://sedac.ciesin.columbia.edu/metadata/vocab/vocab_intro.html CIESIN Indexing Vocabulary, Version 2.2] For data resources and datasets related to human interactions in global change.
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*[http://www.getty.edu/research/conducting_research/vocabularies/tgn/ Getty Thesaurus of Geographic Names]
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== NMMR Keyword Resources ==
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* Micro-interface for editing keywords for individual metadata record.
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* Go to page of [http://ngdc.noaa.gov/metadata/published/ Published] metadata records to view validation of GCMD keywords and counts of theme keyword in each record set.
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== How to find validation status of GCMD keywords for an individual metadata record ==
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# Go to page of [http://www.ngdc.noaa.gov/metadata/published published] metadata.
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# Select link to record set.
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#* [http://www.ngdc.noaa.gov/metadata/published/NESDIS_Products Example]
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# Select 'Text' or 'HTML' link to metadata record.
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#* [http://www.ngdc.noaa.gov/nmmr/xmls/fgdc.jsp?id=gov.noaa.class:AERO100&view=classic Example]
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# Select 'Validate GCMD keywords' link at top right.
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#* [http://www.ngdc.noaa.gov/nmmr/xmls/fgdc.jsp?xml=NESDIS_Products/AERO100.xml&base=http://www.ngdc.noaa.gov/metadata/published/&title=NMMR%20Metadata%20gov.noaa.class:AERO100&view=validGCMD  Example]
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=== Notes about validation of GCMD keywords ===
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This is a work in progress, we hope to keep this documentation as up-to-date as possible. <br/>
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We are only able to check against the NASA/GCMD Earth Science Keyword List. We hope to include other GCMD Keyword lists, when available.
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GCMD requests that we document their thesauri like this: "NASA/GCMD Earth Science Keywords". However, in order for your GCMD keywords to be validated, they must include these words: "GCMD Earth Science" in the Keyword Thesaurus element.
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* [http://www.ngdc.noaa.gov/nmmr/xmls/fgdc.jsp?xml=NGDC/G01142.xml&base=http://www.ngdc.noaa.gov/metadata/published/&title=NMMR%20Metadata%20gov.noaa.ngdc:G01142&view=validGCMD Example]
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Note: The GCMD keyword validation does not prevent records from passing FGDC validation, hence you can publish metadata records with poor or incorrect keywords. It is up to the metadata editor to ensure that the keywords are the latest and greatest.
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== Other Resources ==
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Introductory discussion about controlled vocabularies from [http://marinemetadata.org/guides/guidedrafts/vocindex2 Marine Metadata Interoperability (MMI)]portal.
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[[Category:Metadata]]
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