Aquarius V5.0: Monthly Climatology Sea Surface Salinity from Satellite

Aquarius Level 3 monthly climatology sea surface salinity data is mapped at a 1-degree spatial resolution. The data is the official end-of-mission public release (Version 5.0) from the AQUARIUS/SAC-D satellite, a joint NASA and Argentinian CONAE mission. 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 patterns based on sea surface salinity maps.
• Studying the freshwater cycle and its interaction with climate based on salinity climatology.
• Validating and calibrating other satellite or in-situ salinity measurements based on the standard mapped product.
• Analyzing long-term salinity trends for climate change studies based on monthly climatological averages.

Strengths

• Official end-of-mission public data release (Version 5.0), representing a finalized dataset.
• Data is derived from a dedicated instrument suite with three radiometers and a scatterometer for surface roughness correction.
• Provides a standard mapped image product at a consistent 1-degree spatial resolution.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration (NASA) and Comision Nacional de Actividades Espaciales (CONAE).

Collection Method

Satellite remote sensing via the AQUARIUS/SAC-D mission's radiometers and scatterometer.

Time Range

Monthly climatology (long-term average).

Freshness

Last updated 2026-03-13 14:48:24.208076; freshness should be verified.

Geography

Global ocean coverage with a 370 km cross-track swath.