Aquarius Seasonal Climatology: Sea Surface Spiciness from Satellite Radiometers

Global sea surface spiciness data at 1-degree spatial resolution, averaged into seasonal climatologies. The dataset is produced by NASA and Argentina's CONAE using the AQUARIUS/SAC-D satellite, which carries three radiometers and a scatterometer measuring brightness temperature and ocean backscatter at specific frequencies. This version 5.0 product uses only measurements from the satellite's descending passes.

Use Cases

• Modeling ocean density and circulation patterns based on gridded spiciness data.
• Analyzing seasonal climatology of sea surface properties based on averaged satellite measurements.
• Calibrating or validating other salinity datasets based on the described radiometer and scatterometer methodology.
• Studying long-term trends in ocean spice based on the seasonal standard mapped image product.

Strengths

• Data is derived from a dedicated satellite instrument with three radiometers at 29, 38, and 46-degree incidence angles.
• Includes surface roughness corrections using a scatterometer operating at 1.26 GHz.
• 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.
• The dataset is limited to descending satellite passes, which may not capture diurnal variability.
• Row count and exact temporal coverage 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 platform's radiometers and scatterometer.

Time Range

Seasonal climatology (time range not specified in input).

Freshness

Last updated 2026-03 13 14:45:25.459469; freshness should be verified.

Geography

Global ocean coverage.