9cef422f-ed3f-4090-9556-b2e895ba2ca8 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 2026-01-16T12:14:34.950049Z ISO 19115-3 - SEXTANT 1.0 3 1388 584 14 false WGS 84 / NSIDC EASE-Grid 2.0 Global (EPSG:6933) EPSG 8.6 CATDS-PDC L3SM Filtered - 1 day global map of soil moisture values from SMOS satellite 2022-02-14 publication CATDS-PDC_L3SM_Filtered DOI:10.12770/9cef422f-ed3f-4090-9556-b2e895ba2ca8 This product is the daily product of soil moisture, and contains filtered data. The retrievals are based on a multi-orbit retrieval algorithm. A detection of freeze and snow is performed and added to the flags. Ascending and descending orbits are processed separately. CATDS (CNES, IFREMER, CESBIO) CATDS support@catds.fr author Arnaud Mialon CESBIO arnaud.mialon@univ-tlse3.fr principalInvestigator CATDS (CNES, IFREMER, CESBIO) support@catds.fr publisher https://sextant.ifremer.fr/geonetwork/srv/api/records/9cef422f-ed3f-4090-9556-b2e895ba2ca8/attachments/SM_1day_asc.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 L3SM Soil Moisture Filtered Land Product Humidity ODATIS aggregation parameters and Essential Variable names 2025-07-29 publication geonetwork.thesaurus.external.theme.NVS.OD1 /Observational data/satellite Type de jeux de donnée ODATIS 2025-12-09 publication geonetwork.thesaurus.local.theme.type_jeux_donnee Processing level 2025-12-09 publication geonetwork.thesaurus.local.processing-level.myocean.processing-level Creative Commons license to apply : Attribution (BY) : http://creativecommons.org/licenses/?lang=en grid 1 utf8 geoscientificInformation -180.00 180.00 -83.50 83.50 2010-01-12 NetCDF netcdf 3 with 64 bit offset option https://data.catds.fr/cpdc/Land_products/GRIDDED/L3SM/RE07/MIR_CLF31A WWW:DOWNLOAD RE07-ASC RE07-ASC - Reprocessed products (01/2010 - 05/2021), ascending orbits https://data.catds.fr/cpdc/Land_products/GRIDDED/L3SM/RE07/MIR_CLF31D WWW:DOWNLOAD RE07-DESC RE07-DESC - Reprocessed products (01/2010 - 05/2021), descending orbits https://data.catds.fr/cpdc/Land_products/GRIDDED/L3SM/OPER/MIR_CLF31A WWW:DOWNLOAD OPER-ASC OPER-ASC - Operational products (06/2021 - now), ascending orbits https://data.catds.fr/cpdc/Land_products/GRIDDED/L3SM/OPER/MIR_CLF31D WWW:DOWNLOAD OPER-DESC OPER-DESC - Operational products (06/2021 - now), descending orbits https://doi.org/10.12770/9cef422f-ed3f-4090-9556-b2e895ba2ca8 DOI DOI of the dataset DOI of the dataset 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 Land_products/GRIDDED/... (same relative paths as the https links) https://www.catds.fr/sipad/ WWW:LINK CATDS Sipad CATDS Sipad - Web-based interactive tool which allows subsettings and temporal agregation. https://www.catds.fr/ WWW:LINK CATDS Web portal CATDS Web portal http://doi.org/10.5194/essd-9-293-2017 WWW:LINK-1.0-http--publication-URL Reference Al Bitar Ahmad, Mialon Arnaud, Kerr Yann H., Cabot Francois, Richaume Philippe, Jacquette Elsa, Quesney Arnaud, Mahmoodi Ali, Tarot Stephane, Parrens Marie, Al-Yaari Amen, Pellarin Thierry, Rodriguez-Fernandez Nemesio, Wigneron Jean-Pierre (2017). The global SMOS Level 3 daily soil moisture and brightness temperature maps. Earth System Science Data, 9(1), 293-315. Publisher's official version : http://doi.org/10.5194/essd-9-293-2017 , Open Access version : http://archimer.ifremer.fr/doc/00388/49941/ 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 - https://doi.org/10.57780/SM1-e20cf57 - from ESA (European Space Agency). The L3SM filtered product is the daily product of soil moisture, and contains filtered data. The retrievals are based on a multi-orbit retrieval algorithm. A detection of freeze and snow is performed and added to the flags. Ascending and descending orbits are processed separately. The aggregated products are generated from this fundamental product. Products from reprocessing RE07 are available for the period 01/2010 - 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_CLF31x_startdate_enddate_vvv_ccc_7 - clas : File class (OPER : operational mode, REXX : reprocessing xx) - x : A for ascending orbit, D for descending orbit - 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 : Al Bitar Ahmad, Mialon Arnaud, Kerr Yann H., Cabot Francois, Richaume Philippe, Jacquette Elsa, Quesney Arnaud, Mahmoodi Ali, Tarot Stephane, Parrens Marie, Al-Yaari Amen, Pellarin Thierry, Rodriguez-Fernandez Nemesio, Wigneron Jean-Pierre (2017). The global SMOS Level 3 daily soil moisture and brightness temperature maps. Earth System Science Data, 9(1), 293-315. Publisher's official version : http://doi.org/10.5194/essd-9-293-2017 , Open Access version : http://archimer.ifremer.fr/doc/00388/49941/