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Monomission along-track Corrected Sea Surface Heights - Level-2+ (CorSSH - L2P)

Types of dataset: Monomission altimeter product, available for several missions.
Contents: along-track corrected sea surface heights wrt reference ellipsoid.
Use: stationary or long-term geophysical and ocean phenomenon studies.
Description: Mono altimeter satellite product, with corrections and geophysical parameters. Significant wave heights and backscatter coefficient are also provided (except for Sentinel-3A). Note that monomission products by definition are not intercalibrated at crossover points. Thus Jason-1 and Envisat data for example may not be homogeneous at a given point, since their orbits are different. Note also that these products are not corrected from Large Wavelength Error (LWE), unlike multimission Ssalto/Duacs products.

Check monomossion processing last updates.
Geographic coverage: Global, the maximum coverage in latitude depends on the mission.
Format: NetCDF-CF


The use of Sentinel-3A product after this validation phase is described in the licence agreement (section 13. Licence specific to Sentinel-3 L2P products).

Citations: for Sentinel-3A, please refer to the licence agreement to mention credits explicitly in function of your use (section 13. Licence specific to Sentinel-3A L2P products).

Copyright :

  • for all missions except Sentinel-3A : 1992- ongoing Cnes-CLS
  • for Sentinel-3A : 2016-ongoing CNES/CLS consortium under an EUMETSAT Contract, funded by the European Union. Further information in the licence agreement

Disclaimer: For Sentinel-3A only and during its validation phase: “Sentinel-3A L2P products are currently in pre-operational phase. EUMETSAT makes no express or implied representation or warranty as to the accuracy, the fitness for use or purpose, of the information and materials provided during the product validation phase. EUMETSAT shall bear no liability for any consequences, whether direct or indirect, arising from any use of the S3 L2P/L3 Marine Altimetry Service."

Near-Real-Time (NRT) L2P

SatelliteDistribution mediaQuality reportsDelivery delayData periodData usedFile weight
Sentinel-3A FTPFTP3 hours1 monthone pass per file100 Ko per file

Short Time Critical (STC) L2P

SatelliteDistribution mediaQuality reportsDelivery delayData periodData usedFile weight
Sentinel-3A FTPFTP48 hours1 monthone pass per file100 Ko per file


SatelliteDistribution mediaDelivery delayData periodData usedFile weight
3 monthsApr-2014 (cycle 067) - ongoingone pass per file80 Ko per file (zipped)
Saral3 monthsMarch 2013 (cycle 001) - ongoingone pass per file80 Ko per file (zipped)
Jason-23 monthsJuly 2008 (cycle 001) - ongoingone pass per file25 MB per file (zipped)
Jason-13 months January 2002 (cycle 001) - June 2006one pass per file25 MB per file (zipped)
Envisat3 monthsMay 2002 (cycle 006) - Apr-2012one pass per file58 MB per file (zipped)
ERS-23 monthsMay 1995 (cycle 001) - July 2003 (cycle 085)one pass per file65 MB per file (zipped)
ERS-13 monthsOctober 1992 (cycle 015) - June 1996one pass per file70 MB per file (zipped)
T/P3 months September 1992 (cycle 001) - October 2005one pass per file20 MB per file (zipped)
GFO3 monthsJanuary 2000 (cycle 037) - September 2008one pass per file40 MB per file (zipped)
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