https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.6 2026-03-19T10:41:57.720Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/48ec6449-373c-41f6-8a61-8f1e9ed95737 OCEAN MIXED LAYER Also called the surface zone. The ocean mixed layer is the upper layerof ocean in which temperature and salinity are relatively constant withdepth. Depending on local conditions, the surface layer may reach to 1,000meters (3,300 feet) or be absent entirely.