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/ce3a1edd-a2fe-4efd-8971-9dd7b97b6d79 ICE ROUGHNESS Date=2024-10-02 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=The small-scale variation in the relief of the terrain surface (in this case the surface of the ice). Remote sensing instruments, such as radar and microwave sensors, have been able to detect the degree of roughness of sea, lake, and river ice. New Value=The small-scale variation in the relief of the terrain surface (in this case the surface of the ice). Remote sensing instruments, such as radar and microwave sensors, have been able to detect the degree of roughness of sea, lake, and river ice. Date=2024-10-02 User Id=tstevens Entity=WeightedRelation Operation=INSERT System Note=insert WeightedRelation New Value=id: null related concept uuid: a6c3e78f-f408-4b72-941a-f40e3d83dd60 relationship type: null relationship value: null generated by: null The small-scale variation in the relief of the terrain surface (in thiscase the surface of the ice). Remote sensing instruments, such as radarand microwave sensors, have been able to detect the degree of roughness ofsea, lake, and river ice. 2024-10-02 15:53:26.0