Aquarius Official Release Level 3 Sea Surface Density Standard Mapped Image Seasonal Data V5.0

Aquarius Level 3 sea surface density standard mapped image data contains gridded 1 degree spatial resolution derived density averaged over daily, 7 day, monthly, and seasonal time scales. This particular data set is the Seasonal, sea surface density product for version 5.0 of the Aquarius data set, which is the official end of mission public data release from the AQUARIUS/SAC-D mission. Surface density estimates are based on TEOS-10 and derived using retrieved salinity from Aquarius and collocated ancillary SST (Reynolds OI 0.25 degree product). The Aquarius instrument is onboard the AQUARIUS/SAC-D satellite, a collaborative effort between NASA and the Argentinian Space Agency Comision Nacional de Actividades Espaciales (CONAE). The instrument consists of three radiometers in push broom alignment at incidence angles of 29, 38, and 46 degrees incidence angles relative to the shadow side of the orbit. Footprints for the beams are: 76 km (along-track) x 94 km (cross-track), 84 km x 120 km and 96km x 156 km, yielding a total cross-track swath of 370 km. The radiometers measure brightness temperature at 1.413 GHz in their respective horizontal and vertical polarizations (TH and TV). A scatterometer operating at 1.26 GHz measures ocean backscatter in each footprint that is used for surface roughness corrections in the estimation of salinity. The scatterometer has an approximate 390km swath.

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	April 6, 2026, 16:52 (UTC)
Created	April 1, 2025, 14:27 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	e795d8c3-7995-4768-b2a1-3e91e23385d2
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/AQR50-3D3CS
license	https://www.usa.gov/government-works
modified	2026-03-30T22:15:58Z
programCode	{026:000}
publisher	Aquarius Project NASA/CONAE;NASA/JPL/PODAAC
resource-type	Dataset
source_datajson_identifier	true
source_hash	e364da0be1e8925b7f6b9d2ab8e3d8f24504c8b90595285349241708cdd4e88d
source_schema_version	1.1
spatial	[[{"EastBoundingCoordinate":180.0,"NorthBoundingCoordinate":90,"SouthBoundingCoordinate":-90,"WestBoundingCoordinate":-180.0}],"CARTESIAN"]
temporal	2011-08-25/2015-06-07
theme	{"Earth Science"}