Field Definitions are Available Here
Collection
string (40)
The unique identifier by which a campaign/project/experiment is known. The campain/project is the scientific endeavor associated with the acquisition of the collection. Collections may be associated with multiple campaigns.
SAFARI 2000
/Campaigns/Campaign/ShortName
/gmi:MI_Metadata/gmi:acquisitionInformation/gmi:MI_AcquisitionInformation/gmi:operation/gmi:MI_Operation/gmi:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString
Identification Information (ECHO)