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/b7812c71-4b9e-4016-b4ba-dfcdb7e62365
VEGETATION INDEX
Date=2016-06-15 User Id=gee-cee Entity=Definition Operation=UPDATE Field=reference
System Note=update Definition
New Value=USGS
Date=2016-06-15 User Id=gee-cee Entity=NarrowerRelation Operation=INSERT
User Note=Insert Concept
System Note=add narrower relation
New Value=VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365,84883] - NORMALIZED DIFFERENCE VEGETATION INDEX [2297a00a-80f5-466e-b28e-b9ca42562d3f,188279]
Date=2021-09-08 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference
System Note=update Definition
Old Value=USGS
New Value=National Weather Association (NWA) Remote Sensing Committee
Date=2024-10-25 User Id=tstevens Entity=NarrowerRelation Operation=INSERT
User Note=Insert Concept
System Note=add narrower relation
New Value=VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365,1872664] - PLANT AREA INDEX _PAI_ [f094049b-fd89-4d01-b37f-7372b50c3309,1875501]
Date=2016-06-15 User Id=gee-cee Entity=Definition Operation=UPDATE Field=text
System Note=update Definition
Old Value=Includes Global Change Master Directory detailed variables under the
variable, Vegetation Index: Normalized Difference Vegetation
Index(NDVI).
New Value=An indicator that describes the greenness - the relative density and health of vegetation - for each picture element, or pixel, in a satellite image.
Date=2021-09-08 User Id=tstevens Entity=Definition Operation=UPDATE Field=text
System Note=update Definition
Old Value=An indicator that describes the greenness - the relative density and health of vegetation - for each picture element, or pixel, in a satellite image.
New Value=An index that is determined using visible and near-IR channels on AVHRR. Denotes relative chlorophyll content of vegetation during daylight conditions, and is thus used to monitor drought conditions.
Date=2016-06-15 User Id=gee-cee Entity=NarrowerRelation Operation=INSERT
User Note=Insert Concept
System Note=add narrower relation
New Value=VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365,84883] - LEAF AREA INDEX [b1d65d88-7bd0-491d-91ca-4102b89dc3e7,188277]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to ENHANCED VEGETATION INDEX [067a4ce7-c7d1-499c-bc86-4a9f747f89ca]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to CHLOROPHYLL INDEX RED EDGE [35a5c352-5ce0-429b-852b-397afe4ee102]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to PHOTOCHEMICAL REFLECTANCE INDEX [6dffdd7b-4c0b-4773-a783-3379b361d962]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to CAROTENOID CONTENT INDEX [43183696-ba4e-4e8e-9553-adc36e3708d1]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to CHLOROPHYLL-CAROTENOID INDEX [d863e94c-5368-4c6b-937d-20d22d685239]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to MODIFIED ANTHOCYANIN REFLECTANCE INDEX [34dfa28b-c457-4c13-9f18-b0d331190588]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to NORMALIZED DIFFERENCE INFRARED INDEX [37d8ff62-a8c7-4fc5-93e7-263d8c33a5d4]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to NORMALIZED DIFFERENCE WATER INDEX [2426eba5-3817-466a-9be1-879be097227b]
Date=2026-01-07 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to NORMALIZED DIFFERENCE SNOW INDEX [13354468-9b4c-4a42-9d21-447b34723283]
Date=2026-02-18 User Id=system System Note=Added narrower relation from VEGETATION INDEX [b7812c71-4b9e-4016-b4ba-dfcdb7e62365] to ENHANCED VEGETATION INDEX (EVI) [eef81846-73b6-463a-8e69-eb192c7c1418]
An index that is determined using visible and near-IR channels on AVHRR. Denotes relative chlorophyll content of vegetation during daylight conditions, and is thus used to monitor drought conditions.
2024-10-25 10:26:13.0