621d5bcc-01e9-480e-a764-518127dea272 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 2026-03-26T10:01:02.48508Z ISO 19115-3 - SEXTANT 1.0 3 392 392 14 false EPSG:6931 EPSG 8.6 CATDS-PDC L3OS 3G Arctic - Debiased gaussian average daily salinity field over Arctic product from SMOS satellite 2026-03-27 publication https://sextant.ifremer.fr/record/621d5bcc-01e9-480e-a764-518127dea272 CATDS-PDC_L3OS_3G This product contains daily salinity fields over Arctic from a 9 days temporal gaussian average, corrected from land-sea contamination and latitudinal bias, based on L2Q over Arctic products, mixing ascending and descending orbits. CATDS (CNES, IFREMER, LOCEAN, ACRI) CATDS support@catds.fr author Jacqueline Boutin LOCEAN jb@locean-ipsl.upmc.fr principalInvestigator CATDS (CNES, IFREMER, LOCEAN, ACRI) support@catds.fr publisher Jean-Luc Vergely ACRI jean-luc.vergely@latmos.ipsl.fr principalInvestigator https://sextant.ifremer.fr/geonetwork/srv/api/records/621d5bcc-01e9-480e-a764-518127dea272/attachments/Sea_Surface_Salinity_in_SM_RE08_MIR_CSNG09_20230901T000000_2023090.png /Imagery/Satellite Imagery Thèmes Sextant 2025-12-09 publication geonetwork.thesaurus.local.theme.sextant-theme Orthoimagery GEMET - INSPIRE themes, version 1.0 2018-07-27T14:39:48 publication 2018-07-27 publication geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme SMOS CATDS CPDC L3OS Ocean Salinity 3G Ocean Product CDS-CERSAT Centre de données ODATIS 2026-01-19 publication geonetwork.thesaurus.local.theme.odatis_centre_donnees Type de jeux de donnée ODATIS 2025-12-09 publication geonetwork.thesaurus.local.theme.type_jeux_donnee Variables ODATIS 2023-10-13 publication geonetwork.thesaurus.local.theme.odatis_variables Salinity ODATIS aggregation parameters and Essential Variable names 2025-07-29 publication geonetwork.thesaurus.external.theme.NVS.OD1 /Données d'observation/satellite Type de jeux de donnée ODATIS 2024-10-15 publication geonetwork.thesaurus.local.theme.type_jeux_donnee Creative Commons license to apply : Attribution (BY) : http://creativecommons.org/licenses/?lang=en grid 1 utf8 geoscientificInformation -180.00 180.00 45.00 90.00 2010-06-16 NetCDF netcdf 3 with 64 bit offset option https://data.catds.fr/cpdc/Ocean_products/GRIDDED/L3OS/RE08/MIR_CSNG09 WWW:DOWNLOAD RE08 RE08 - Reprocessed products (06/2010 - 09/2025) https://data.catds.fr/cpdc/Ocean_products/GRIDDED/L3OS/OPER/MIR_CSNG09 WWW:DOWNLOAD OPER OPER - Operational products (10/2025 - now) https://doi.org/10.13155/92266 WWW:LINK ATBD L3/L4 OS Algorithm Theoretical Basis Document L3/L4 OS http://www.catds.fr/content/download/68781/908673 WWW:LINK Pros/cons table https://doi.org/10.1016/j.rse.2020.112027 WWW:LINK-1.0-http--publication-URL Reference A. Supply et al., “New insights into SMOS sea surface salinity retrievals in the Arctic Ocean”, Remote Sensing of Environment, vol. 249, p. 112027, Nov. 2020, doi: 10.1016/j.rse.2020.112027 ftp://ftp.ifremer.fr/ WWW:DOWNLOAD FTP Access FTP Access - All products are also available by ftp : server ftp.ifremer.fr, login ext-catds-cpdc, passwd catds2010, path Ocean_products/GRIDDED/... (same relative paths as in the https links) https://www.catds.fr/ WWW:LINK CATDS Web portal CATDS Web portal https://doi.org/10.12770/621d5bcc-01e9-480e-a764-518127dea272 DOI Digital Object Identifier (DOI) The base products, for this processing chains, are the SMOS L2 OS products - https://doi.org/10.57780/SM1-294cb1b - from ESA (European Space Agency). The L3OS 3G Arctic product contains daily salinity fields over Arctic from a 9 days temporal gaussian average, corrected from land-sea contamination, similar to L2Q products, mixing ascending and descending orbits. Products from reprocessing RE08 are available for the period 06/2010 - 09/2025. Products from operational (OPER) processing are available since 10/2025. Reprocessed products and operational products are derived using the same algorithm and configuration, hence ensuring the temporal continuity. File naming : SM_clas_MIR_CSNG09_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 : A. Supply et al., “New insights into SMOS sea surface salinity retrievals in the Arctic Ocean”, Remote Sensing of Environment, vol. 249, p. 112027, Nov. 2020, doi: 10.1016/j.rse.2020.112027