Aquarius V5.0: Annual Sea Surface Spiciness Satellite Data at 1-Degree Resolution

Aquarius Level 3 sea surface spiciness data provides annual averages at a 1-degree spatial resolution. The data originates from the AQUARIUS/SAC-D satellite, a joint NASA and Argentinian CONAE mission, using three radiometers and a scatterometer to measure brightness temperature and ocean backscatter. This dataset is version 5.0 of the annual product.

Use Cases

• Modeling ocean density and circulation based on gridded annual spiciness data.
• Analyzing long-term salinity trends based on satellite-derived sea surface measurements.
• Calibrating ocean models using spatially mapped spiciness data at 1-degree resolution.
• Studying surface roughness corrections for salinity estimation using scatterometer backscatter data.

Strengths

• Data is derived from a dedicated satellite instrument with three radiometers and a scatterometer, providing multiple measurement angles.
• Provides annual averages of spiciness at a consistent 1-degree spatial resolution.
• Produced by NASA and CONAE, indicating authoritative space agency provenance.

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.
• Data may reflect the geographic and temporal bias inherent to the satellite's 370 km swath coverage.

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 satellite's radiometers and scatterometer.

Time Range

Annual averages.

Freshness

Last updated 2026-03-13 14:48:34.563685; freshness should be verified.

Geography

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