Field Definitions are Available Here
Granule
string (250)
The Universal Reference ID of the granule referred by the data provider. This ID is unique per data provider.
SC:AMSREL1A.003:35880134
UR
/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
Spatial Information (ECHO)