Field Definitions are Available Here
Collection
string (500)
None
Absorption
/ScienceKeywords/ScienceKeyword/VariableLevel1Keyword/Value
/gmi:MI_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gco:CharacterString
Descriptive Information (ECHO)