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Available on 2 platforms
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Aquarius Level 3 sea surface salinity data provides gridded annual averages at 1-degree spatial resolution derived from descending satellite passes. This version 5.0 dataset is the official end-of-mission public release from the NASA-CONAE AQUARIUS/SAC-D satellite mission. The data is synthesized from three radiometers and a scatterometer measuring brightness temperature and ocean backscatter for salinity estimation.
License is ambiguously listed as 'other-license-specified' on one platform and unknown on others; users must verify terms. Data is limited to descending passes only. The conflicting last updated dates (2015 vs. 2026) require verification from authoritative sources.