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Aquarius Level 3 sea surface salinity data provides daily, gridded 1-degree spatial resolution measurements from the NASA/CONAE AQUARIUS/SAC-D satellite mission. This version 5.0 dataset represents the official end-of-mission public release, containing descending pass observations only. The satellite used three radiometers and a scatterometer to measure brightness temperature and ocean backscatter for salinity estimation.
License is unclear; one source lists 'other-license-specified' while others list null. The 2026 update date on Data.gov is likely a placeholder or error. Data files are available in multiple formats including JPEG, BIN, ISO, PDF, and ZIP.