https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.7 2026-04-15T10:53:30.610Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/5c0b448c-7eb4-4e8c-8403-260cbb6114bb SEA SURFACE HEIGHT Date=2021-01-11 User Id=tstevens Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=SEA SURFACE HEIGHT [5c0b448c-7eb4-4e8c-8403-260cbb6114bb,85103] - SEA SURFACE HEIGHT ANOMALY _SSHA_ [3798a6c9-9b39-4e22-bee4-be80d39049fe,560812] The height of the ocean surface above a datum, such as a vertical datumfor sea level measurements, or a reference ellipsoid for satellitealtimetric measurements. 2021-01-11 12:14:19.0