Catalogue PIGMA
CATDS-PDC L3OS 3G - Debiased gaussian average daily salinity field product from SMOS satellite
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.
Simple
- Date (Publication)
- 2021-06-01
- Date
- Identifier
- CATDS-PDC_L3OS_3G / 332
- Credit
- CATDS (CNES, IFREMER, LOCEAN, ACRI)
- Status
- onGoing On going
- Thèmes Sextant
-
- /Imagery/Satellite Imagery
- Cersat - Latency
-
- Less than 1 month
- Cersat - Project
-
- SMOS
- CATDS
- Cersat - GCMD parameter
-
- /Salinity
- GEMET - INSPIRE themes, version 1.0
-
- Orthoimagery
- Theme
-
- SMOS
- CATDS
- CPDC
- L3OS
- Ocean Salinity
- 3G
- Ocean Product
- Centre de données ODATIS
-
- CDS-SAT-CERSAT
- Type de jeux de donnée ODATIS
-
- /Observational data/satellite
- Variables ODATIS
-
- /Physical Oceanography/Salinity
- Cersat - Parameter
-
- Salinity
- Access constraints
- OtherRestrictions
- Use constraints
- Product developed by Ifremer/CERSAT and funded in the frame of GMES MyOcean project. Authors : Emmanuelle Autret (eautret@ifremer.fr), Jean-François Piollé (jfpiolle@ifremer.fr)
- Other constraints
- CC-BY (Creative Commons - Attribution)
- Other constraints
- 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]
- Spatial representation type
- grid Grid
- Denominator
- 1
- Distance
- 25 km
- Metadata language
- English
- Character set
- utf8 UTF8
- Topic category
-
- Geoscientific information
))
- Begin date
- 2010-02-01
- Reference system identifier
- EPSG / WGS 84 / NSIDC EASE-Grid 2.0 Global (EPSG:6933) / 8.6
- Reference system identifier
- http://www.opengis.net/def/crs/EPSG/0/6933
- Number of dimensions
- 3
- Dimension name
- Column
- Dimension size
- 1388
- Dimension name
- Vertical
- Dimension size
- 584
- Dimension name
- Sample
- Dimension size
- 14
- Cell geometry
- Area
- Transformation parameter availability
- No
- Distribution format
-
-
NetCDF
(
netcdf 3 with 64 bit offset option
)
-
NetCDF
(
netcdf 3 with 64 bit offset option
)
- OnLine resource
-
Ifremer FTP Access - OPER Files
(
WWW:FTP
)
FTP
- OnLine resource
-
Processing and validation
(
WWW:LINK
)
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/
- OnLine resource
-
Ifremer FTP Access - RE07 files
(
WWW:FTP
)
FTP
- OnLine resource
- Ifremer HTTPS Access - OPER files ( WWW:LINK )
- OnLine resource
- Ifremer HTTPS Access - RE07 files ( WWW:LINK )
- OnLine resource
-
Product notices
(
WWW:LINK
)
List of products, user manuals and algorithms documents
- OnLine resource
- Digital Object Identifier (DOI) ( DOI )
- Hierarchy level
- Dataset
- Statement
-
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/
- Attribute description
- composite
- Processing level code
- L3 /
- File identifier
- 4ec7499c-0d6b-4321-8ac0-8d062865da41 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2023-12-07T10:51:24.981Z
- Metadata standard name
- ISO 19115-3:2018 - Remote Sensing
- Metadata standard version
- 1.0
Overviews
Spatial extent
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