Aquarius Official Release Level 3 Sea Surface Salinity Standard Mapped Image Ascending Daily Data V5.0

Aquarius Level 3 sea surface salinity (SSS) standard mapped image data contains gridded 1 degree spatial resolution SSS averaged over daily, 7 day, monthly, and seasonal time scales. This particular data set is the Daily, Ascending sea surface salinity 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. Only retrieved values for Ascending passes have been used to create this 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	June 23, 2026, 01:48 (UTC)
Created	April 1, 2025, 14:28 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	a03b3335-f9e2-4f19-b020-8697d435a7a0
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/AQR50-3S1AS
license	https://www.usa.gov/government-works
modified	2026-06-15T22:16:01Z
programCode	{026:000}
publisher	Aquarius Project NASA/CONAE;NASA/JPL/PODAAC
resource-type	Dataset
source_datajson_identifier	true
source_hash	28455986c4f3316e5310698944e981e1912d70f63e07f6b92840642d35d945b0
source_schema_version	1.1
spatial	["CARTESIAN", [{"EastBoundingCoordinate": 180.0, "NorthBoundingCoordinate": 90, "SouthBoundingCoordinate": -90, "WestBoundingCoordinate": -180.0}]]
temporal	2011-08-25/2015-06-07
theme	{"Earth Science"}