Aquarius Level 3: Sea Surface Salinity Mapped Images from Satellite Mission

Mission-cumulative sea surface salinity data from the Aquarius/SAC-D satellite, a NASA and CONAE collaboration. The dataset contains gridded 1-degree spatial resolution salinity averages over daily, 7-day, monthly, and seasonal time scales. It is derived from three radiometers and a scatterometer measuring brightness temperature and ocean backscatter at L-band frequencies.

Use Cases

• Modeling global ocean circulation and freshwater fluxes based on gridded sea surface salinity maps.
• Studiating seasonal and interannual salinity variability based on daily to seasonal averaged data.
• Validating and calibrating other salinity measurement systems based on satellite-derived standard mapped images.
• Analyzing the relationship between sea surface salinity and climate phenomena based on mission-cumulative data.

Strengths

• Data is derived from a dedicated satellite instrument with three radiometers and a scatterometer for surface roughness correction.
• Provides salinity maps at a consistent 1-degree spatial resolution across multiple temporal averages.
• Represents a collaborative mission effort between NASA and the Argentinian Space Agency (CONAE).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total dataset size are unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite remote sensing via the Aquarius instrument onboard the AQUARIUS/SAC-D satellite.

Time Range

Mission cumulative series.

Freshness

Last updated 2026-03-13 14:49:28.681891; freshness should be verified.

Geography

Global ocean coverage within the instrument's 370 km cross-track swath.