Page History

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Geographic Extent completeness in the CMR (Items, Elements and Attributes)

Observations

• Bounding Box extent elements are used in all CMR metadata collection with the exception of OMINRT and are complete in 11/26 CMR collections
• 18 out of 26 CMR collection are using the extentTypeCode element with a value of '1'.  This field is complete in 6/26 CMR
• 8 NASA collections are using the gmd:geographicIdentifier/gmd:description.  Commonly recurring values include:

• • 'HORIZONTALTILENUMBER - Horizontal tile number of a grid, which increases from left to right'
  • 'VERTICALTILENUMBER - Vertical tile number of a grid, which increases from top to bottom'
  • 'TileID - MODIS Land tile identification number which represents a geographical area on the surface of the Earth bounded by latitude and longitude coordinates'
  • 'Universal Transverse Mercator (UTM)ZoneIdentifier'
• 7 NASA collections include a Geographic Identifier code with the most common value 'Universal Transverse Mercator (UTM)'

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Where are Temporal Extent elements used in CMR metadata?

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Date completeness in the CMR (Items, Elements and Attributes) 

Observations

• Metadata Creation/Modified Date (timeStamp element) is complete in all CMR metadata collections
• Resource Citation Date is complete in all CMR collections
• Keyword Thesauraus Name Date exists in 15 NASA collections and is complete in 7 NASA collections
• AggregateDataSetName Date exists in 7 CMR metadata collections

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How are Keywords used in CMR metadata?

The table below shows the usage of keyword elements are used in CMR metadata collections.

Table 8:

Keyword existence in the CMR (Elements)

Keyword existence in the CMR (Elements and Attributes)

Keyword completeness Keywords in the CMR (Elements)

Keywords Keyword completeness in the CMR (Elements and Attributes)

Observations

• All CMR collections include Keyword and KeywordTypeCode elements.
• 15 NASA collections include thesaurusName content for onlineResource and organisationName elements.

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• The Keyword element is complete in all CMR metadata collections
  
  

Where are Descriptions used in CMR metadata?

The table below shows the usage of Description elements in CMR metadata collections. The Description field is commonly used

Table 8:

Descriptions Description existence in the CMR (Elements)

Descriptions Description existence in the CMR (Elements and Attributes)

Description completeness in the CMR (Elements)

Description completenss in the CMR (Elements and Attributes) 

Observations

• All CMR collections include Platform descriptions and Resource Identifier descriptions.
• 15 NASA collections include thesaurusName content for onlineResource and organisationName elements.Platform description elements exists in all CMR metadata collections and are complete in 22/26 CMR collections