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/765e92a7-8c14-47dc-bdd8-d85d132a11ee PLANETARY BOUNDARY LAYER HEIGHT Date=2012-06-28 User Id=saritz Entity=BroaderRelation Operation=INSERT User Note=Move Concepts System Note=add broader relation New Value=PLANETARY BOUNDARY LAYER HEIGHT [765e92a7-8c14-47dc-bdd8-d85d132a11ee,23331] - ATMOSPHERE [c47f6052-634e-40ef-a5ac-13f69f6f4c2a,19875] Date=2012-06-28 User Id=saritz Entity=BroaderRelation Operation=DELETE User Note=Move Concepts System Note=delete broader relation Old Value=PLANETARY BOUNDARY LAYER HEIGHT [765e92a7-8c14-47dc-bdd8-d85d132a11ee,23331] - ALTITUDE [16bfcf54-f8e1-4c8e-9bd4-a1ac06ea95a0,20169] Date=2012-06-28 User Id=saritz Entity=BroaderRelation Operation=DELETE User Note=undo move System Note=delete broader relation Old Value=PLANETARY BOUNDARY LAYER HEIGHT [765e92a7-8c14-47dc-bdd8-d85d132a11ee,23331] - ATMOSPHERE [c47f6052-634e-40ef-a5ac-13f69f6f4c2a,19875] Date=2012-06-28 User Id=saritz Entity=BroaderRelation Operation=INSERT User Note=undo move System Note=add broader relation New Value=PLANETARY BOUNDARY LAYER HEIGHT [765e92a7-8c14-47dc-bdd8-d85d132a11ee,23331] - ALTITUDE [16bfcf54-f8e1-4c8e-9bd4-a1ac06ea95a0,20169] The height of the atmospheric layer from the Earth's surface up to analtitude of about 1 kilometer in which wind speed and direction areaffected by frictional interaction with objects on the Earth'ssurface.