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/de21632f-b614-4375-8f09-d14ab00d852b CHLOROPHYLL CONCENTRATIONS Date=2018-03-07 User Id=tstevens Entity=PrefLabel Operation=UPDATE Field=text System Note=update PrefLabel Old Value=CHLOROPHYLL New Value=CHLOROPHYLL CONCENTRATIONS Date=2018-03-07 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Chlorophyll is the green pigment in plants responsible for absorbing the light energy required for photosynthesis. New Value=Refers to the amount of photosynthetic plankton, or phytoplankton, present in the ocean. Phytoplankton populations are influenced by climatic factors such as sea surface temperatures and winds. Date=2018-03-07 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference System Note=update Definition Old Value=Nebel, Bernard J.and Richard T. Wright. Environmental Science-the Way the World Works. 1998. Prentice-Hall, Inc. Upper Saddle River, New Jersey. New Value=U.S. Global Change Research Program Date=2018-03-07 User Id=tstevens Entity=BroaderRelation Operation=INSERT User Note=Move Concepts System Note=add broader relation New Value=CHLOROPHYLL [de21632f-b614-4375-8f09-d14ab00d852b,84779] - WATER CHARACTERISTICS [f7e97dc3-1181-41b5-8b90-946eb2504110,310633] Date=2018-03-07 User Id=tstevens Entity=BroaderRelation Operation=DELETE User Note=Move Concepts System Note=delete broader relation Old Value=CHLOROPHYLL [de21632f-b614-4375-8f09-d14ab00d852b,84779] - WATER QUALITY/WATER CHEMISTRY [8c02f5d1-ce86-4bf5-84d5-b3496cdba6ad,83565] Refers to the amount of photosynthetic plankton, or phytoplankton, present in the ocean. Phytoplankton populations are influenced by climatic factors such as sea surface temperatures and winds. 2018-03-07 11:06:29.0