Aquarius Satellite Monthly Climatology of Sea Surface Density

Aquarius Level 3 sea surface density data provides gridded 1-degree spatial resolution monthly climatology maps. The data is produced by NASA and the Argentinian Space Agency CONAE using the AQUARIUS/SAC-D satellite's radiometers and scatterometer. Surface density estimates are derived from retrieved salinity and collocated sea surface temperature data.

Use Cases

• Modeling ocean density-driven circulation patterns based on monthly climatology maps
• Analyzing long-term salinity trends in conjunction with sea surface temperature data
• Validating oceanographic models using satellite-derived density estimates
• Studying the relationship between sea surface roughness and salinity retrieval based on scatterometer data mentioned in the description

Strengths

• Data is derived from a dedicated satellite instrument with three radiometers and a scatterometer for surface roughness correction
• Provides a 1-degree spatial resolution global grid
• Based on the TEOS-10 international seawater standard for density calculation
• A collaborative product from NASA and the Argentinian Space Agency CONAE

Limitations

• Row count and dataset size are unknown, which may limit suitability assessment
• Column-level documentation is absent; field semantics must be inferred after download
• Data is limited to Ascending satellite passes only, which may introduce sampling bias

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Satellite remote sensing using the Aquarius instrument onboard the AQUARIUS/SAC-D satellite

Time Range

Monthly climatology (long-term average)

Freshness

Last updated 2026-03-13 14:55:44.065428; freshness should be verified

Geography

Global ocean coverage with a 370 km cross-track swath