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SSALTO/DUACS Experimental products: along-track and gridded Sea Level Heights and velocities

Types of dataset: Ssalto/Duacs mutlimission altimeter products "Experimental". Preparation to the SWOT Era.
Contents: multimission sea surface heights computed with respect to a twenty-year mean,

  • along-track Sea Level Anomalies at 5Hz, 
  • gridded Sea Level Heights and geostrophic velocities computed with Dynamic Interpolation (1/8°x1/8° and 1/4°x1/4° on cartesian grid),
  • gridded Sea Level Anomalies and geostrophic velocities combining altimetry and drifters (1/4°x1/4° on a cartesian grid),
  • gridded optimally merged velocities combining altimetry and SST (1/4°x1/4° on a cartesian grid). 

Use: regional studies, ocean variability (mesoscale circulation,...),
Condition of access :  Users should keep in mind that these products are experimental products. Notably, they are not produced on an operational basis. 
Description: 3 regional products and 1 global product resulting from specific processes, available in delayed time. Note that the gridded products combining altimetry and SST have been calculated in the framework of three different projects: 1/ a Marie-Curie Fellowship cofunded by the European Union under the FP7-PEOPLE-Cofunding of Regional, National and International Programmes Grant Agreement 600407 and the RITMARE FLAG project (2014-2016), 2/ the ESA Globcurrent project (2014-2018), 3/ the DUACS-MR CNES project (2016-2018).

Geographic coverage:  few test zones are provided to users:

  • along-track at 5Hz:  North Atlantic, Agulhas current
  • gridded computed with Dynamic Interpolation: 2 zones: Gulf Stream, Udinstev
  • gridded combining altimetry and drifters: Gulf of Mexico
  • gridded combining altimetry and SST: global

Tools and references:

Format: NetCDF-CF
Copyright : 2015-2017 - CLS-Cnes

Delayed-time along-track 5Hz products

SatelliteTypeAuthenticated access service
Data periodFile weight
Jason-3along-trackFTP2016/03/28-2017/04/02max 700 KB per file (zipped)
Jason-22014/12/29-2016/03/06
SARAL/AltiKa2014/12/29-2017/02/05
Cryosat-22015/01/01-2016/01/03
Sentinel-3A2016/04/06-2017/04/23

Delayed-time gridded Dynamic Interpolation product

SatelliteTypeAuthenticated access service
Data periodFile weight
Merged on guflstream areagriddedFTP2015/01/01-2015/12/15231 KB per file (zipped)
Merged on Circumpolar (undinstev) area2015/11/01-2016/04/30334 KB per file (zipped)

Delayed-time gridded combining altimetry and drifters

SatelliteTypeAuthenticated access service
Data periodFile weight
Merged on Gulf of Mexico areagriddedFTP2015/09/01-2016/04/3056 KB per file (zipped)

Delayed-time gridded combining altimetry and SST

SatelliteTypeAuthenticated access service
Data periodFile weight
Merged on Global areagriddedFTP2014/12/31-2015/12/3125 MB per file (zipped)
Confidence flag on global area
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