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The table below shows where temporal elements are used in CMR metadata collections.

Table 6:

Temporal Extents Extent existence in the CMR (Elements)

Temporal Extent existence in the CMR (Items, Elements and Attributes)

Temporal Extent completeness in the CMR (Elements)

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

 

Observations

  • All TimePeriod/beginPosition exists in all CMR collections and is complete in 22 CMR collections
  • TimePeriod/end Position exists in 24/28 CMR collections and is complete in 2 CMR collections
  • TimePeriod/endPosition exists in 7 CMR collections include a TimePeriod begin position element, whereas 24 of 28 CMR collections include a TimePeriod end position element7 CMR collections include a TimePeriod endPosition element with an attribute value of indeterminatePosition='Now'.  This element is complete in 2 NASA collections.
  • TimeInstant/timePosition exists in 1 CMR collection (SEDAC) is using the timePosition element with the most common @framevalue of with an attribute value of framevalue='Eastern-Daylight' and field value a DateTime value the likely begin time.

Where are Date elements used in CMR metadata?

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