SARAL Near-Real-Time Value-added Operational Geophysical Data Record Sea Surface Height Anomaly

These data are near-real-time (NRT) (within 7-9 hours of measurement) sea surface height anomalies (SSHA) from the AltiKa altimeter onboard the Satellite with ARgos and ALtiKa (SARAL). SARAL is a French(CNES)/Indian(SARAL) collaborative mission to measure sea surface height using the Ka-band AltiKa altimeter and was launched February 25, 2013. The major difference between these data and the Operational Geophysical Data Record (OGDR) data produced by the project is that the orbit from SARAL has been adjusted using SSHA differences with those from the OSTM/Jason-2 GPS-OGDR-SSHA product at inter-satellite crossover locations. This produces a more accurate NRT orbit altitude for SARAL with accuracy of 1.5 cm (RMS), taking advantage of the 1 cm (radial RMS) accuracy of the GPS-based orbit used for the OSTM/Jason-2 GPS-OGDR-SSHA product. This dataset also contains all data from the project (reduced) OGDR, and improved altimeter wind speeds and sea state bias correction. More information on the SARAL mission can be found at: http://www.aviso.oceanobs.com/en/missions/current-missions/saral.html

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated February 17, 2026, 03:23 (UTC)
Created April 1, 2025, 18:43 (UTC)
accessLevel public
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harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/AKASA-XOGD1
landingPage https://podaac.jpl.nasa.gov/CitingPODAAC
modified 2026-02-16
programCode {026:000}
publisher NASA/JPL;NASA/JPL/PODAAC
resource-type Dataset
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source_hash b84faeb97987ffeb55fd25f2beb73bc41569e8d229635a2fae7f3a9eda9e908b
source_schema_version 1.1
spatial ["CARTESIAN",[{"NorthBoundingCoordinate":82.0,"WestBoundingCoordinate":-180.0,"EastBoundingCoordinate":180.0,"SouthBoundingCoordinate":-82.0}]]
temporal 2020-03-18/2020-03-18
theme {"Earth Science"}