Aquarius Level 3: Seasonal Sea Surface Density Gridded Data at 1-Degree Resolution

Seasonal sea surface density maps derived from the Aquarius/SAC-D satellite mission's final public data release. This dataset provides gridded estimates at 1-degree spatial resolution, calculated using TEOS-10 standards from retrieved salinity and collocated sea surface temperature. The mission was a collaboration between NASA and Argentina's CONAE, using a three-radiometer instrument with a 370 km swath to measure brightness temperature at 1.413 GHz.

Use Cases

• Modeling global ocean density-driven circulation patterns based on seasonal gridded data.
• Analyzing the relationship between sea surface salinity and density based on TEOS-10 derived estimates.
• Validating other satellite or in-situ oceanographic measurements using the mission's official end-of-release data.
• Studying seasonal variability in surface ocean properties based on averaged time scales.

Strengths

• Represents the official end-of-mission public data release (Version 5.0) from the Aquarius/SAC-D satellite.
• Provides data at multiple temporal averages, including the seasonal product described.
• Derived using the international TEOS-10 standard for seawater properties.
• Sourced from a dedicated satellite instrument with three radiometers covering a 370 km cross-track swath.

Limitations

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

Provenance

Source

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

Collection Method

Satellite remote sensing via the Aquarius instrument's three radiometers and a scatterometer at 1.26 GHz.

Time Range

Seasonal averages; specific temporal coverage is not detailed in the provided metadata.

Freshness

Last updated 2026-03 14:52:10.872303; freshness should be verified.

Geography

Global ocean coverage, gridded at 1-degree spatial resolution.