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/b2bdeb71-81b5-43e6-a8b1-b09c215c8d1a ORGANIC MATTER Date=2021-10-19 User Id=tstevens Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=ORGANIC MATTER [b2bdeb71-81b5-43e6-a8b1-b09c215c8d1a,776178] - COLORED DISSOLVED ORGANIC MATTER [18e0fad3-b6f4-4120-9221-f82fb2ffd384,778203] Date=2024-09-26 User Id=tstevens Entity=WeightedRelation Operation=INSERT System Note=insert WeightedRelation New Value=id: null related concept uuid: e82c0632-5a3c-4da2-ba10-55c0fc222580 relationship type: null relationship value: null generated by: null Date=2026-02-18 User Id=system System Note=Added narrower relation from ORGANIC MATTER [b2bdeb71-81b5-43e6-a8b1-b09c215c8d1a] to DETRITUS [b501a674-638e-41d5-a2e5-b630cb5a62c4] Dissolved or particulate substances that are hydrocarbons orhydrocarbon derivatives. Variables such as dissolved organic matter (DOM)or particulate organic matter (POM) are included as detailed variablesunder organic matter. 2024-09-26 13:04:05.0