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Wave Along-track Level-2+ (L2P)

Types of dataset: Wave altimeter product, available for Sentinel-3 missions in Near-Real-Time. Since April 8th 2021 a wind variable is included in the product.

Contents: along-track Significant Wave Height (SWH) values calibrated relative to buoys. A validity flag and the applied correction are also provided. Since April 8th 2021, the wind variable is added in the file and it is computed by Gourrion (2002) algorithm using Collard (2005) table with PLRM sigma0 and swh. Moreover, the values are cross-calibrated with Jason-3 standard F wind speed.

Use: marine meteorology

Description: Monomission Along-track altimeter satellite product. 
Check monomission processing last updates

Geographic coverage: Global

Format: NetCDF-CF

Tools:

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

References:

For Winds:

  • Table by (in french) Collard, F., 2005, Algorithmes de vent et période moyenne des vagues JASON à base de réseaux de neurones, BO-021-CLS-0407-RF, Boost Technologies, 33pp.
  • Algorithm by Gourrion, J., D. Vandemark, S. Bailey, B. Chapron, G. P. Gommenginger, P. G. Challenor, and M. A. Srokosz, 2002. A two-parameter wind speed algorithm for Ku-Band altimeters, J. Atmos. and Oceanic Tech., 19, 2030-2048.

For Waves:

  • Sepulveda H. H., Queffeulou P. and Ardhuin F. (2015): Assessment of SARAL AltiKa wave height measurements relative to buoy, Jason-2 and Cryosat-2 data. Marine Geodesy, 38 (S1),449-465, doi: 10.1080/01490419.2014.1000470.
  • Queffeulou P. (2016): Validation of Jason-3 altimeter wave height measurements (poster). OSTST meeting, November 1-4, 2016, La Rochelle, France.
  • Queffeulou P. and Croizé-Fillon D. (2017): Global Altimeter SWH Data Set, version 11.4, February 2017. Technical report Ifremer. ftp://ftp.ifremer.fr/ifremer/cersat/products/swath/altimeters/waves/documentation/altimeter_wave_merge__11.4.pdf

Citations:

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

Copyright :

  • for Sentinel-3 missions: 2019-ongoing CNES/CLS consortium under an EUMETSAT Contract, funded by the European Union. Further information in the licence agreement

Near-Real-Time (NRT) Wave L2P

SatelliteDistribution mediaQuality reportsDelivery delayData periodData usedFile weight
Sentinel-3A FTPFTP4 hours2 monthsone pass per file<100 Ko per file (zipped)
Sentinel-3B FTPFTP4 hours2 monthsone pass per file<100 Ko per file (zipped)
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