4ec7499c-0d6b-4321-8ac0-8d062865da41 Tarot Stephane IFREMER 02 98 22 40 55 Centre Bretagne - ZI de la Pointe du Diable - CS 10070 - 29280 Plouzané Brest France Stephane.Tarot@ifremer.fr pointOfContact 2025-11-01T15:19:16.584554Z ISO 19115-3:2018 - Remote Sensing 1.0 3 1388 584 14 false WGS 84 / NSIDC EASE-Grid 2.0 Global (EPSG:6933) EPSG 8.6 http://www.opengis.net/def/crs/EPSG/0/6933 CATDS-PDC L3OS 3G - Debiased gaussian average daily salinity field product from SMOS satellite 2021-06-01 publication CATDS-PDC_L3OS_3G 332 This product contains daily salinity fields from a 9 days temporal gaussian average, corrected from land-sea contamination and latitudinal bias, based on L2Q products, mixing ascending and descending orbits. The base products, for all the CATDS-PDC (Centre Aval de Traitement des Données SMOS - Production & Dissemination Center) processing chains, are the SMOS L1B products from ESA (European Space Agency). From these, brightness temperatures at various incidence angles are reconstructed. The Sea Surface Salinity (SSS) are retrieved from multi-angular brightness temperatures through a maximum likehood Bayesian approach in which measured Tb and Tb simulated using a forward direct model are compared (see Zine et al. 2008 for a general description of the retrieval method, and pro_con table for a summary of the similarities/differences with respect to ESA level 2 ocean salinity processing). Products from reprocessing RE07 are available for the period 02/2010 - 05/2021. Products from operational (OPER) processing are available since 06/2021. Reprocessed products and operational products are derived using the same algorithm and configuration, hence ensuring the temporal continuity. CATDS (CNES, IFREMER, LOCEAN, ACRI) onGoing Helpdesk CATDS support@catds.fr pointOfContact Jacqueline Boutin LOCEAN jb@locean-ipsl.upmc.fr author Jean-Luc Vergely ACRI jean-luc.vergely@latmos.ipsl.fr author Ifremer / CERSAT > Satellite Data Processing and Distribution Center of the French Research Institute for Exploitation of the Sea cersat@ifremer.fr originator Ifremer / CERSAT > Satellite Data Processing and Distribution Center of the French Research Institute for Exploitation of the Sea support@catds.fr distributor Helpdesk CERSAT cersat@ifremer.fr pointOfContact CNES > Centre National d'Etudes Spatiales funder https://sextant.ifremer.fr/geonetwork/srv/api/records/9c97fb5c-d7d5-4bc2-a5c7-57944026cd60/attachments/SSS_map_RE07_L3G-E25-G09d-R0.25-AD_2019_05.png /Imagery/Satellite Imagery Thèmes Sextant 2024-09-27 publication 2024-09-27 publication geonetwork.thesaurus.local.theme.sextant-theme Less than 1 month Cersat - Latency 2024-07-26 publication 2024-07-26 publication geonetwork.thesaurus.local.theme.cersat_latency SMOS CATDS Cersat - Project 2025-07-31 publication 2025-07-31 publication geonetwork.thesaurus.local.theme.cersat_project /Salinity Cersat - GCMD parameter 2024-01-04 publication 2024-01-04 publication geonetwork.thesaurus.external.theme.GCMDparameter Orthoimagery GEMET - INSPIRE themes, version 1.0 2018-01-01 publication 2018-07-27T14:39:48 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme SMOS CATDS CPDC L3OS Ocean Salinity 3G Ocean Product CDS-SAT-CERSAT Centre de données ODATIS 2023-11-06 publication 2023-11-06 publication geonetwork.thesaurus.local.theme.odatis_centre_donnees /Observational data/satellite Type de jeux de donnée ODATIS 2024-10-15 publication 2024-10-15 publication geonetwork.thesaurus.local.theme.type_jeux_donnee /Physical Oceanography/Salinity Variables ODATIS 2023-10-13 publication 2023-10-13 publication geonetwork.thesaurus.local.theme.odatis_variables Salinity Cersat - Parameter 2024-07-26 publication 2024-07-26 publication geonetwork.thesaurus.local.theme.cersat_parameter Salinity ODATIS aggregation parameters and Essential Variable names 2025-07-29 publication 2025-07-29 publication geonetwork.thesaurus.external.theme.NVS.OD1 CC-BY (Creative Commons - Attribution) CATDS (2022). CATDS-PDC L3OS 3G - Debiased gaussian average daily salinity field product from SMOS satellite. CATDS (CNES, IFREMER, LOCEAN, ACRI).  https://doi.org/10.12770/9c97fb5c-d7d5-4bc2-a5c7-57944026cd60. Dataset accessed [YYYY-MM-DD] grid 1 25 utf8 geoscientificInformation -180.00 180.00 -83.50 83.50 2010-02-01 composite L3 NetCDF netcdf 3 with 64 bit offset option ext-catds-cpdc:catds2010@ftp.ifremer.fr/Ocean_products/GRIDDED/L3OS/OPER/MIR_CS3G09 WWW:FTP Ifremer FTP Access - OPER Files FTP http://doi.org/10.1016/j.rse.2018.05.022 WWW:LINK Processing and validation Boutin J., Vergely J.L., Marchand S., D'Amico F., Hasson A., Kolodziejczyk Nicolas, Reul Nicolas, Reverdin G., Vialard J. (2018). New SMOS Sea Surface Salinity with reduced systematic errors and improved variability. Remote Sensing of Environment, 214, 115-134. Publisher's official version : http://doi.org/10.1016/j.rse.2018.05.022 , Open Access version : http://archimer.ifremer.fr/doc/00441/55254/ ext-catds-cpdc:catds2010@ftp.ifremer.fr/Ocean_products/GRIDDED/L3OS/RE07/MIR_CS3G09 WWW:FTP Ifremer FTP Access - RE07 files FTP https://data.catds.fr/cpdc/Ocean_products/GRIDDED/L3OS/OPER/MIR_CS3G09 WWW:LINK Ifremer HTTPS Access - OPER files https://data.catds.fr/cpdc/Ocean_products/GRIDDED/L3OS/RE07/MIR_CS3G09 WWW:LINK Ifremer HTTPS Access - RE07 files https://www.catds.fr/Resources/Documentation WWW:LINK Product notices List of products, user manuals and algorithms documents https://doi.org/10.12770/9c97fb5c-d7d5-4bc2-a5c7-57944026cd60 DOI Digital Object Identifier (DOI) The base products, for all the CATDS-PDC (Centre Aval de Traitement des Données SMOS - Production & Dissemination Center) processing chains, are the SMOS L1B products from ESA (European Space Agency). From these, brightness temperatures at various incidence angles are reconstructed. The Sea Surface Salinity (SSS) are retrieved from multi-angular brightness temperatures through a maximum likehood Bayesian approach in which measured Tb and Tb simulated using a forward direct model are compared (see Zine et al. 2008 for a general description of the retrieval method, and pro_con table for a summary of the similarities/differences with respect to ESA level 2 ocean salinity processing). The L3OS 3G product contains daily salinity fields from a 9 days temporal gaussian average, corrected from land-sea contamination and latitudinal bias, based on L2Q products, mixing ascending and descending orbits. Products from reprocessing RE07 are available for the period 02/2010 - 05/2021. Products from operational (OPER) processing are available since 06/2021. Reprocessed products and operational products are derived using the same algorithm and configuration, hence ensuring the temporal continuity. File naming : SM_clas_MIR_CS3G09_startdate_enddate_vvv_ccc_7 - clas : File class (OPER : operational mode, REXX : reprocessing xx) - startdate : sensing start date/time of the data (format yyyymmddThhmiss) - enddate : sensing end date/time of the data (format yyyymmddThhmiss) - vvv : version number of the processor generating the product - ccc : file counter File format : In each archive file (.tgz extension), there are two files - A Header file (.HDR), which is a text file, in XML Earth Explorer Header format - A Data file (.DBL.nc), which is a netcdf file, format variant 2 (netcdf 3 with 64 bits offset option) Reference : Boutin J., Vergely J.L., Marchand S., D'Amico F., Hasson A., Kolodziejczyk Nicolas, Reul Nicolas, Reverdin G., Vialard J. (2018). New SMOS Sea Surface Salinity with reduced systematic errors and improved variability. Remote Sensing of Environment, 214, 115-134. Publisher's official version : http://doi.org/10.1016/j.rse.2018.05.022 , Open Access version : http://archimer.ifremer.fr/doc/00441/55254/