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The table below shows where Identifiers are used in CMR metadata collections. Identifiers enable specific metadata concepts such platforms, instruments, Sensors, etc to be unambiguously identified. 

Table 2:

Identifiers in the CMR - No Attributes

Identifiers in the CMR with Attributes

Observations

• All CMR metadata collections include a Resource Identifier
• All CMR metadata collections include Instrument and Platform Identifiers.
• Reference System identifiers are included in 25/26 CMR collections
• Operation identifiers are included in 22/26 CMR collections
• Sensor identifiers are included in 14 NASA metadata collections
• Geographic Identifier are included in 7 NASA metadata collections
• AggregationInformation Identifiers are included in 9 Associated resource identifiers (AggregationInfo) are included to some degree in 5 CMR metadata collections

Where are Citations used in CMR metadata?

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