Aquarius Satellite Sea Surface Salinity Cumulative Data

Cumulative sea surface salinity data from the Aquarius/SAC-D satellite mission, representing the mission series mean for descending passes. This Level 3 product provides gridded data at 1-degree spatial resolution, averaged over daily, 7-day, monthly, and seasonal timescales. It is a collaborative effort between NASA and the Argentinian Space Agency CONAE, with the latest documented update in 2015.

Use Cases

• Analyzing long-term trends in global sea surface salinity using the mission-cumulative data.
• Validating and calibrating ocean circulation models with spatially gridded 1-degree resolution salinity fields.
• Studying the relationship between salinity and climate phenomena like El Niño using multi-temporal averages (daily to seasonal).
• Correcting for ocean surface roughness in remote salinity retrieval using the collocated scatterometer backscatter measurements.

Strengths

• Provides data at a consistent 1-degree spatial resolution, enabling global-scale analysis.
• Includes multiple temporal aggregations (daily, 7-day, monthly, seasonal) from a dedicated satellite mission.

Limitations

• Specific row count, file size, and complete column schema are unknown across all sources.
• Conflicting license information: one source lists 'other-license-specified' while others list none or unknown.
• The most recent documented update was in 2015, indicating the dataset is not actively updated.

Provenance

Source

NASA and CONAE (Argentinian Space Agency) via the Aquarius/SAC-D satellite mission.

Collection Method

Satellite remote sensing using three radiometers and a scatterometer to measure brightness temperature and ocean backscatter.

Time Range

Mission cumulative (covers the operational period of the Aquarius satellite).

Freshness

2015-06-07

Geography

Global ocean coverage.