6294e08c-baec-4282-a251-33fee22ec67f 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 2025-11-01T14:04:57.884159Z 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 L3TB - Global polarised brightness temperature product from SMOS satellite 2024-06-11 publication CATDS-PDC_L3TB DOI:10.12770/6294e08c-baec-4282-a251-33fee22ec67f This product is a synthesis product of brightness temperatures for L-Band frequency. It includes all brightness temperatures acquired that very day by the SMOS satellite operating in full pol mode. Values correspond to those at the top of the atmosphere level, transformed to the ground polarisation reference frame, binned and averaged into fixed incidence angle classes. This product is available on each of the EASE2 grid projections (cylindrical and polar). 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/6294e08c-baec-4282-a251-33fee22ec67f/attachments/CATDS-PDC_L3TB%20-%20Illustration.png /Imagery/Satellite Imagery Thèmes Sextant 2024-09-27 publication 2024-09-27 publication geonetwork.thesaurus.local.theme.sextant-theme Oceanographic geographical features 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 L3TB Brightness Temperature Common Product Air temperature ODATIS aggregation parameters and Essential Variable names 2025-07-29 publication 2025-07-29 publication geonetwork.thesaurus.external.theme.NVS.OD1 /Observational data/satellite Type de jeux de donnée ODATIS 2024-10-15 publication 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 -83.50 83.50 2010-01-12 NetCDF netcdf 3 with 64 bit offset option https://data.catds.fr/cpdc/Common_products/GRIDDED/L3/RE07/MIR_CDF3TA WWW:DOWNLOAD CYL-RE07-ASC CYL-RE07-ASC - Reprocessed products (01/2010 - 05/2021), cylindrical projection, ascending orbits https://data.catds.fr/cpdc/Common_products/GRIDDED/L3/RE07/MIR_CDF3TD WWW:DOWNLOAD CYL-RE07-DESC CYL-RE07-DESC - Reprocessed products (01/2010 - 05/2021), cylindrical projection, descending orbits https://data.catds.fr/cpdc/Common_products/GRIDDED/L3/OPER/MIR_CDF3TA WWW:DOWNLOAD CYL-OPER-ASC CYL-OPER-ASC - Operational products (06/2021 - now), cylindrical projection, ascending orbits https://data.catds.fr/cpdc/Common_products/GRIDDED/L3/OPER/MIR_CDF3TD WWW:DOWNLOAD CYL-OPER-DESC CYL-OPER-DESC - Operational products (06/2021 - now), cylindrical projection, descending orbits https://data.catds.fr/cpdc/Common_products/GRIDDED/L3/OPER/MIR_CDF3TN WWW:DOWNLOAD POL-OPER-NORTH POL-OPER-NORTH - Operational products (04/2024 - now), polar projection, north hemisphere https://data.catds.fr/cpdc/Common_products/GRIDDED/L3/OPER/MIR_CDF3TS WWW:DOWNLOAD POL-OPER-SOUTH POL-OPER-SOUTH - Operational products (04/2024 - now), polar projection, south hemisphere 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 Common_products/GRIDDED/... (same relative paths as the https links) https://www.catds.fr/catds_admin/content/download/170793/1950358/ WWW:LINK SMOS Level 3 Brightness Temperature (TB) Users’manual and useful tips Quality assessment flags https://data.catds.fr/cpdc/Common_products/GRIDDED/L3/RE08/MIR_CDF3TN WWW:DOWNLOAD POL-RE08-NORTH POL-RE08-NORTH - Reprocessed products (01/2010 - 03/2024), polar projection, north hemisphere https://data.catds.fr/cpdc/Common_products/GRIDDED/L3/RE08/MIR_CDF3TS WWW:DOWNLOAD POL-RE08-SOUTH POL-RE08-SOUTH - Reprocessed products (01/2010 - 03/2024), polar projection, north hemisphere 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/ https://doi.org/10.12770/6294e08c-baec-4282-a251-33fee22ec67f DOI DOI of the dataset DOI of the dataset 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 L3TB product includes all brightness temperatures from SMOS satellite acquired that day, at top of atmosphere level, transformed to ground polarisation reference frame, filtered when several acquisitions are available, and binned and averaged into fixed incidence angle classes (including a 40° incidence angle, to ease the comparison with SMAP data). This product is available on each of the EASE2 grid projections (cylindrical and polar). For the cylindrical projection: Ascending and descending orbits are processed separately, and only in full polarisation. For the polar projections: Each orbit (equator to equator) is processed separately. For the cylindrical projection: Products from reprocessing RE07 are available for the period 01/2010 - 05/2021. Products from operational (OPER) processing are available since 06/2021. For the polar projections: Products from reprocessing RE08 are available for the period 01/2010 - 03/2024. Products from operational (OPER) processing are available since 04/2024. Reprocessed products and operational products are derived using the same algorithm and configuration, hence ensuring the temporal continuity. In this product, the brightness temperature values potentially contaminated by RFI or by the sun are not removed from the data. Instead, 2 counter fields (Nb_RFI_Flags and NB_SUN_Flags) are present, in order to count the number of views identified as contaminated. Therefore a low counter value means a low probability of contamination, and a high counter value means a high probability of contamination. File naming : SM_clas_MIR_CDF3Tx_startdate_enddate_vvv_ccc_7 - clas : File class (OPER : operational mode, REXX : reprocessing xx) - x : A for ascending orbit, D for descending orbit, N for north pole, S for south pole - 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/