Title

CATDS-PDC L4SM RZSM - 1 day global map of root zone soil moisture values from SMOS satellite

Date (Publication)

2022-12-07

Citation identifier

CATDS-PDC_L4SM_RZSM

Citation identifier

DOI:10.12770/316e77af-cb72-4312-96a3-3011cc5068d4

Abstract

This product is a daily product of root zone soil moisture representative of the 0-1 m depth of the soil.

Credit

CATDS (CNES, IFREMER, CESBIO)

Point of contact

Organisation name	Individual name	Electronic mail address	Role
CATDS		support@catds.fr	Author
CESBIO	Yann Kerr	yann.kerr@cnes.fr	Principal investigator
CATDS (CNES, IFREMER, CESBIO)		support@catds.fr	Publisher

Thèmes Sextant

• /Imagery/Satellite Imagery

GEMET - INSPIRE themes, version 1.0

• Orthoimagery

Theme

• SMOS

• CATDS

• CPDC

• L3SM

• Soil Moisture

• Filtered

• Land Product

• RZSM

• Root Zone Soil Moisture

Use limitation

Creative Commons license to apply : Attribution (BY) : http://creativecommons.org/licenses/?lang=en

Access constraints

License

Use constraints

License

Spatial representation type

Grid

Denominator

1

Language

English

Character set

UTF8

Topic category

• Geoscientific information

Begin date

2010-01-17

Reference system identifier

EPSG / WGS 84 / NSIDC EASE-Grid 2.0 Global (EPSG:6933) / 8.6

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

Distribution format

Name	Version
NetCDF	netcdf 3 with 64 bit offset option

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD-1.0-link--download	https://data.catds.fr/cpdc/Land_products/GRIDDED/L4SM/OPER/MIR_CLF4RD	OPER-DESC
WWW:LINK	https://wwz.ifremer.fr/catds_admin/content/download/147436/1791616/	ATBD L4SM RZSM
WWW:LINK-1.0-http--metadata-URL	https://doi.org/10.12770/316e77af-cb72-4312-96a3-3011cc5068d4	DOI of the dataset
WWW:LINK-1.0-http--publication-URL	http://doi.org/10.5281/zenodo.4298572	Reference
WWW:DOWNLOAD-1.0-link--download	ftp://ftp.ifremer.fr/	FTP Access
WWW:DOWNLOAD-1.0-link--download	https://data.catds.fr/cpdc/Land_products/GRIDDED/L4SM/OPER/MIR_CLF4RA	OPER-ASC
WWW:DOWNLOAD-1.0-link--download	https://data.catds.fr/cpdc/Land_products/GRIDDED/L4SM/RE07/MIR_CLF4RA	RE07-ASC
WWW:DOWNLOAD-1.0-link--download	https://data.catds.fr/cpdc/Land_products/GRIDDED/L4SM/RE07/MIR_CLF4RD	RE07-DESC
WWW:LINK-1.0-http--publication-URL	https://doi.org/10.1109/ACCESS.2024.3404123	Publication

OnLine resource

Protocol	Linkage	Name
WWW:LINK	https://www.catds.fr/	CATDS Web portal

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 - https://doi.org/10.57780/SM1-e20cf57 - from ESA (European Space Agency).

The L4SM RZSM is the daily product of root zone soil moisture (m3/m3) representative of the 0-1 m depth of the soil. The product contains also a quality index taking into account the presence of Radio Frequency Interference (RFI), low quality of retrieval of the input surface soil moisture, and a high fraction of non-nominal surfaces.

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_CLF4Rx_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)

Metadata

File identifier

316e77af-cb72-4312-96a3-3011cc5068d4

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2025-01-28T08:41:28.89397Z

Metadata standard name

ISO 19115:2003/19139 - SEXTANT

Metadata standard version

1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
IFREMER	Tarot Stephane	Stephane.Tarot@ifremer.fr	Local service desk