a233f758-8022-4724-bb8a-0ba603448ebb 2026-09-10T09:35:30.413941Z ISO 19115-3:2018 - Remote Sensing ISO 19115-3:2018 - Remote Sensing 1.0 http://www.opengis.net/def/crs/EPSG/0/4326 Level-2P Derived Products from SWIM instrument of CFOSAT 2024-10-01 creation 2025-04-25 publication a01-2024.005 v2.0 Products containing **Stokes drift contributions** and **wave spectral shape parameters** derived from SWIM spectra and numerical wave modeling. The **Stokes drift** represents the Lagrangian mean current induced solely by surface waves. While its effect is strongest at the ocean surface, it can remain significant down to several tens of meters below the surface. The main novelty of v2.0 is the availability of a comprehensive set of **wave spectral shape parameters** designed to characterize both omnidirectional and directional (2D) wave spectra. These parameters are widely adopted by the wave modeling community to describe key aspects of sea-state dynamics and wave spectrum properties. In particular, they provide valuable indicators for assessing the likelihood of extreme wave events, including rogue waves through metrics such as the Benjamin–Feir Index, as well as the probability of hazardous conditions associated with crossing seas using parameters such as the Cross-Sea Index and Cross-Trough Correlation. Together, these new parameters offer enhanced capabilities for the analysis of sea-state variability, wave interactions, and extreme ocean conditions. CDS-AVISO CDS-AVISO CDS-AVISO CDS-AVISO distributor CDS-AVISO aviso@altimetry.fr pointOfContact CLS/CNES originator CNES funder https://sextant.ifremer.fr/geonetwork/AVISO/api/records/a233f758-8022-4724-bb8a-0ba603448ebb/attachments/stokes_drift.jpg Mean Stokes drift vector over 2021 (2x2°) on SWIM track + Model independent theoretical windsea correction (Elfouhaily et al. 1997) Credits : Towards a global Stokes drift product from SWIM/CFOSAT, 2022 Ocean Surface Topography Science Team Meeting Mean Stokes drift vector over 2021 (2x2°) on SWIM track + Model independent theoretical windsea correction (Elfouhaily et al. 1997) Credits : Towards a global Stokes drift product from SWIM/CFOSAT, 2022 Ocean Surface Topography Science Team Meeting Mean Stokes drift vector over 2021 (2x2°) on SWIM track + Model independent theoretical windsea correction (Elfouhaily et al. 1997) Credits : Towards a global Stokes drift product from SWIM/CFOSAT, 2022 Ocean Surface Topography Science Team Meeting CDS-AVISO CDS-AVISO CDS-AVISO Centre de données ODATIS Centre de données ODATIS 2026-01-19 publication geonetwork.thesaurus.local.theme.odatis_centre_donnees Variables ODATIS Variables ODATIS 2025-04-22 publication geonetwork.thesaurus.local.theme.odatis_variables /Données d'observation/satellite /Données d'observation/satellite /Observational data/satellite Type de jeux de donnée ODATIS Type de jeux de donnée ODATIS 2025-12-09 publication geonetwork.thesaurus.local.theme.type_jeux_donnee Services Nationaux d'Observation Services Nationaux d'Observation 2025-12-09 publication geonetwork.thesaurus.local.theme.SNO Courants Courants Currents Vagues Vagues Waves ODATIS aggregation parameters and Essential Variable names ODATIS aggregation parameters and Essential Variable names 2025-07-29 publication geonetwork.thesaurus.external.theme.NVS.OD1 Level 2 P Level 2 P Level 2 P Processing level Processing level 2025-12-09 publication geonetwork.thesaurus.local.processing-level.myocean.processing-level /Ocean Waves /Ocean Waves /Ocean Waves Cersat - GCMD parameter Cersat - GCMD parameter 2024-01-04 publication geonetwork.thesaurus.external.theme.GCMDparameter Licence ouverte Licence ouverte Licence Ouverte Licence Ouverte Open Licence "The CFOSAT/SWIM Level-2P Derived products were produced by CNES and CLS in the frame of the FRench Oceanographic Ground Segment (FROGS) of the CFOSAT Mission and distributed by AVISO". CLS, & CNES. (2025). Level-2P Derived products from SWIM instrument of CFOSAT (Version 2) [Dataset]. CNES. https://doi.org/10.24400/527896/A01-2024.005 "The CFOSAT/SWIM Level-2P Derived products were produced by CNES and CLS in the frame of the FRench Oceanographic Ground Segment (FROGS) of the CFOSAT Mission and distributed by AVISO". CLS, & CNES. (2025). Level-2P Derived products from SWIM instrument of CFOSAT (Version 2) [Dataset]. CNES. https://doi.org/10.24400/527896/A01-2024.005 "The CFOSAT/SWIM Level-2P Derived products were produced by CNES and CLS in the frame of the FRench Oceanographic Ground Segment (FROGS) of the CFOSAT Mission and distributed by AVISO". CLS, & CNES. (2025). Level-2P Derived products from SWIM instrument of CFOSAT (Version 2) [Dataset]. CNES. https://doi.org/10.24400/527896/A01-2024.005 grid 70 90 utf8 oceans -180.00 180.00 -90.00 90.00 2019-01-01 2026-06-01 L2P NetCDF NetCDF https://www.aviso.altimetry.fr/fileadmin/documents/data/tools/handbook_SWIM_l2p_derived.pdf WWW:LINK User guide User guide Manuel Utilisateur Manuel Utilisateur Handbook https://tds-odatis.aviso.altimetry.fr/thredds/catalog/L2P/dataset-l2p-cfosat-swim-derived-products.html https://tds-odatis.aviso.altimetry.fr/thredds/catalog/L2P/dataset-l2p-cfosat-swim-derived-products.html WWW:LINK CFOSAT/SWIM Level-2P Derived Products CFOSAT/SWIM Level-2P Derived Products CFOSAT/SWIM Level-2P Derived Products THREDDS THREDDS THREDDS https://doi.org/10.1109/TGRS.2020.2994372 https://doi.org/10.1109/TGRS.2020.2994372 https://doi.org/10.1109/TGRS.2020.2994372 WWW:LINK-1.0-http--publication-URL Référence Référence D. Hauser et al., "New Observations From the SWIM Radar On-Board CFOSAT: Instrument Validation and Ocean Wave Measurement Assessment," in IEEE Transactions on Geoscience and Remote Sensing, vol. 59, no. 1, pp. 5-26, Jan. 2021 D. Hauser et al., "New Observations From the SWIM Radar On-Board CFOSAT: Instrument Validation and Ocean Wave Measurement Assessment," in IEEE Transactions on Geoscience and Remote Sensing, vol. 59, no. 1, pp. 5-26, Jan. 2021 D. Hauser et al., "New Observations From the SWIM Radar On-Board CFOSAT: Instrument Validation and Ocean Wave Measurement Assessment," in IEEE Transactions on Geoscience and Remote Sensing, vol. 59, no. 1, pp. 5-26, Jan. 2021 https://doi.org/10.1175/JPO-D-14-0020.1 https://doi.org/10.1175/JPO-D-14-0020.1 https://doi.org/10.1175/JPO-D-14-0020.1 WWW:LINK-1.0-http--publication-URL Référence Référence Breivik, Ø., P. A. E. M. Janssen, and J. Bidlot, 2014: Approximate Stokes Drift Profiles in Deep Water. J. Phys. Oceanogr., 44, 2433–2445 Breivik, Ø., P. A. E. M. Janssen, and J. Bidlot, 2014: Approximate Stokes Drift Profiles in Deep Water. J. Phys. Oceanogr., 44, 2433–2445 Breivik, Ø., P. A. E. M. Janssen, and J. Bidlot, 2014: Approximate Stokes Drift Profiles in Deep Water. J. Phys. Oceanogr., 44, 2433–2445 https://doi.org/10.5194/os-14-41-2018 https://doi.org/10.5194/os-14-41-2018 https://doi.org/10.5194/os-14-41-2018 WWW:LINK-1.0-http--publication-URL Référence Référence Peureux, C., Benetazzo, A., and Ardhuin, F.: Note on the directional properties of meter-scale gravity waves, Ocean Sci., 14, 41–52 Peureux, C., Benetazzo, A., and Ardhuin, F.: Note on the directional properties of meter-scale gravity waves, Ocean Sci., 14, 41–52 Peureux, C., Benetazzo, A., and Ardhuin, F.: Note on the directional properties of meter-scale gravity waves, Ocean Sci., 14, 41–52 https://doi.org/10.1029/97JC00467 https://doi.org/10.1029/97JC00467 https://doi.org/10.1029/97JC00467 WWW:LINK-1.0-http--publication-URL Référence Référence Elfouhaily, T., B. Chapron, K. Katsaros, and D. Vandemark (1997), A unified directional spectrum for long and short wind-driven waves, J. Geophys. Res., 102(C7), 15781–15796 Elfouhaily, T., B. Chapron, K. Katsaros, and D. Vandemark (1997), A unified directional spectrum for long and short wind-driven waves, J. Geophys. Res., 102(C7), 15781–15796 Elfouhaily, T., B. Chapron, K. Katsaros, and D. Vandemark (1997), A unified directional spectrum for long and short wind-driven waves, J. Geophys. Res., 102(C7), 15781–15796 https://doi.org/10.1029/JZ069i024p05181 https://doi.org/10.1029/JZ069i024p05181 https://doi.org/10.1029/JZ069i024p05181 WWW:LINK-1.0-http--publication-URL Référence Référence Pierson Jr., W. J., and L. Moskowitz (1964), A proposed spectral form for fully developed wind seas based on the similarity theory of S. A. Kitaigorodskii, J. Geophys. Res., 69(24), 5181–5190 Pierson Jr., W. J., and L. Moskowitz (1964), A proposed spectral form for fully developed wind seas based on the similarity theory of S. A. Kitaigorodskii, J. Geophys. Res., 69(24), 5181–5190 Pierson Jr., W. J., and L. Moskowitz (1964), A proposed spectral form for fully developed wind seas based on the similarity theory of S. A. Kitaigorodskii, J. Geophys. Res., 69(24), 5181–5190 https://doi.org/10.1029/JC074i028p06991 https://doi.org/10.1029/JC074i028p06991 https://doi.org/10.1029/JC074i028p06991 WWW:LINK-1.0-http--publication-URL Main publication link Main publication link Kenyon, K. E. (1969), Stokes drift for random gravity waves, J. Geophys. Res., 74(28), 6991–6994 Kenyon, K. E. (1969), Stokes drift for random gravity waves, J. Geophys. Res., 74(28), 6991–6994 Kenyon, K. E. (1969), Stokes drift for random gravity waves, J. Geophys. Res., 74(28), 6991–6994 https://www.aviso.altimetry.fr/fileadmin/documents/data/tools/SWIM_l2p_derived_Spectral_shape_parameter.pdf WWW:LINK-1.0-http--publication-URL Main publication link Main publication link Main publication link Averseng et al., 2025, Wave spectral shape parameters in L2PDER products https://doi.org/10.24400/527896/a01-2024.005 https://doi.org/10.24400/527896/a01-2024.005 https://doi.org/10.24400/527896/a01-2024.005 DOI Digital Object Identifier (DOI) Digital Object Identifier (DOI) The Stokes drift represents the Lagrangian mean current induced solely by surface waves V1.0 2025-04-24 Availability of a comprehensive set of wave spectral shape parameters designed to characterize both omnidirectional and directional (2D) wave spectra V2.0 2026-06-24