Aquarius Satellite Monthly Climatology of Sea Surface Salinity

NASA and Argentina's CONAE produced this Level 3 sea surface salinity dataset from the AQUARIUS/SAC-D mission. It provides a monthly climatology product at 1-degree spatial resolution, derived from descending satellite passes. The official Version 5.0 release represents the end-of-mission public data, last updated in 2015.

Use Cases

• Analyzing long-term mean sea surface salinity patterns from the 1-degree gridded climatology data.
• Validating ocean circulation models using the satellite-derived salinity estimates from three radiometer beams.
• Studying the relationship between salinity and brightness temperature measurements at 1.413 GHz (TH and TV).
• Investigating surface roughness corrections for salinity retrieval using the co-located 1.26 GHz scatterometer backscatter data.

Strengths

• Data is the official Version 5.0 end-of-mission public release, representing a final, processed state.
• Provides salinity estimates from three separate radiometer beams at 29, 38, and 46-degree incidence angles.
• Incorporates surface roughness corrections using a dedicated scatterometer with a 390 km swath.

Limitations

• Temporal coverage is limited to the Aquarius mission lifetime, with data last updated in 2015.
• Product is limited to descending satellite passes only, not a composite of all passes.
• Spatial resolution is 1 degree, which may be coarse for studying fine-scale ocean features.

Provenance

Source

NASA and Comision Nacional de Actividades Espaciales (CONAE) via the AQUARIUS/SAC-D mission.

Collection Method

Satellite remote sensing using three push-broom radiometers and a scatterometer.

Time Range

Mission period climatology (specific years not stated in input).

Freshness

Static climatology product; last updated 2015-06-07.

Geography

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