ESA Soil Moisture Climate Change Initiative (Soil_Moisture_cci): 'Combined' Product, Version 03.2

The Soil Moisture CCI 'Combined' dataset is one of the three datasets created as part of the European Space Agency's (ESA) Soil Moisture Essential Climate Variable (ECV) CCI project. The product has been created by merging the "Active" and "Passive" datasets which were created for the project, these being respectively fusions of scatterometer and radiometer soil moisture products derived from the AMI-WS, ASCAT, SMMR, SSM/I, TMI, AMSR-E, WindSat, AMSR2 and SMOS satelllite instruments.



The product, provided as global daily images in NetCDF-4 classic file format, presents a global coverage of surface soil moisture at a spatial resolution of 0.25 degrees. It is provided in volumetric units [m3 m-3] and covers the period (yyyy-mm-dd) 1978-11-01 to 2015-12-31. For information regarding the theoretical and algorithmic base of the product, please see the Algorithm Theoretical Baseline Document version 2.0 or the paper by Wagner 2012, both available in the documentation section. An overview of all known errors associated with it is provided in the Comprehensive Error Characterization Report. Other additional reference documents and information relating to the dataset can also be found on the CCI Soil Moisture project web site or within the Product Specification Document.



The data set should be cited using all three of the following references:



1. Dorigo, W.A., Wagner, W., Albergel, C., Albrecht, F., Balsamo, G., Brocca, L., Chung, D., Ertl, M., Forkel, M., Gruber, A., Haas, E., Hamer, D. P. Hirschi, M., Ikonen, J., De Jeu, R. Kidd, R. Lahoz, W., Liu, Y.Y., Miralles, D., Lecomte, P. (2017). ESA CCI Soil Moisture for improved Earth system understanding: State-of-the art and future directions. In Remote Sensing of Environment, 2017, ISSN 0034-4257, https://doi.org/10.1016/j.rse.2017.07.001



2. Gruber, A., Dorigo, W. A., Crow, W., Wagner W. (2017). Triple Collocation-Based Merging of Satellite Soil Moisture Retrievals. IEEE Transactions on Geoscience and Remote Sensing. PP. 1-13. 10.1109/TGRS.2017.2734070



3. Liu, Y.Y., Dorigo, W.A., Parinussa, R.M., de Jeu, R.A.M. , Wagner, W., McCabe, M.F., Evans, J.P., van Dijk, A.I.J.M. (2012). Trend-preserving blending of passive and active microwave soil moisture retrievals, Remote Sensing of Environment, 123, 280-297, doi: 10.1016/j.rse.2012.03.014

Simple

Date (Publication)
2017-06-28T13:57:11
Date (Creation)
2017-06-28T13:57:11
Citation identifier
https://catalogue.ceda.ac.uk/uuid/7c7a38b2d2ce448b99194bff85a85248
Citation identifier
Centre for Environmental Data Analysis (CEDA) / 7c7a38b2d2ce448b99194bff85a85248
Citation identifier
alternative.identifier / esacci.SOILMOISTURE.day.L3S.SSMV.multi-sensor.multi-platform.COMBINED.03-2.r1.v20170611
Point of contact
Organisation name Individual name Electronic mail address Role

Unavailable

Dorigo, Wouter

Unavailable

 		Author

Unavailable

Wagner, Wolfgang

Unavailable

 		Author

Unavailable

Gruber, A.

Unavailable

 		Author

Unavailable

Scanlon, T.

Unavailable

 		Author

Unavailable

Hahn, S.

Unavailable

 		Author

Unavailable

Kidd, R.

Unavailable

 		Author

Unavailable

Paulik, C

Unavailable

 		Author

Unavailable

Reimer, C.

Unavailable

 		Author

Unavailable

Van der Schalie, R.

Unavailable

 		Author

Unavailable

De Jeu, R.

Unavailable

 		Author

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Custodian

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Distributor

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

pointofContact

CCI Open Data Portal

support@ceda.ac.uk

pointofContact

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Publisher
Maintenance and update frequency
Not planned
Update scope
Dataset
Keywords

GEMET - INSPIRE themes, version 1.0

  • orthoimagery
Access constraints
Other restrictions
Other constraints
Public data: access to these data is available to both registered and non-registered users.
Use constraints
Other restrictions
Other constraints
Under the following licence https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_soilmoisture_terms_and_conditions.pdf, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Spatial representation type
Grid
Language
English
Topic category
  • Imagery base maps earth cover
N
S
E
W
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Begin date
1978-11-01T00:00:00
End date
2015-12-31T23:59:59
Unique resource identifier
WGS 84
Distribution format
Name Version

Data are in NetCDF format
Distributor contact
Organisation name Individual name Electronic mail address Role

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Distributor
OnLine resource
Protocol Linkage Name
https://catalogue.ceda.ac.uk/uuid/7c7a38b2d2ce448b99194bff85a85248

CEDA Data Catalogue Page
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/soil_moisture/data/daily_files/COMBINED/v03.2/

DOWNLOAD
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/soil_moisture/metadata/sample_images/ESACCI-SOILMOISTURE-L3S-SSMV-COMBINED-20080401000000-fv02.1.png

Sample Image
OnLine resource
Protocol Linkage Name
http://www.hydrol-earth-syst-sci.net/15/425/2011/hess-15-425-2011.html

Liu et al., 2011 Developing an improved soil moisture dataset by blending passive and active microwave satellite-based retrievals
OnLine resource
Protocol Linkage Name
http://publik.tuwien.ac.at/files/PubDat_209402.pdf

Wagner, 2012: FUSION OF ACTIVE AND PASSIVE MICROWAVE OBSERVATIONS TO CREATE AN ESSENTIAL CLIMATE VARIABLE DATA RECORD ON SOIL MOISTURE

OnLine resource
Protocol Linkage Name
http://www.esa-soilmoisture-cci.org/sites/default/files/documents/public/Deliverables%20-%20CCI%20SM%202/CCI2_Soil_Moisture_D3.3.1_Product_Users_Guide%203.3.pdf

Product User Guide
OnLine resource
Protocol Linkage Name
https://doi.org/10.1016/j.rse.2017.07.001

Dorigo, W.A., Wagner, W., Albergel, C., Albrecht, F., Balsamo, G., Brocca, L., Chung, D., Ertl, M., Forkel, M., Gruber, A., Haas, E., Hamer, D. P. Hirschi, M., Ikonen, J., De Jeu, R. Kidd, R. Lahoz, W., Liu, Y.Y., Miralles, D., Lecomte, P. (2017). ESA CCI Soil Moisture for improved Earth system understanding: State-of-the art and future directions. In Remote Sensing of Environment, 2017, ISSN 0034-4257, https://doi.org/10.1016/j.rse.2017.07.001

OnLine resource
Protocol Linkage Name
https://doi.org/10.1109/TGRS.2017.2734070

Gruber, A., Dorigo, W. A., Crow, W., Wagner W. (2017). Triple Collocation-Based Merging of Satellite Soil Moisture Retrievals. IEEE Transactions on Geoscience and Remote Sensing. PP. 1-13. 10.1109/TGRS.2017.2734070

OnLine resource
Protocol Linkage Name
https://doi.org/10.1016/j.rse.2012.03.014

Liu, Y.Y., Dorigo, W.A., Parinussa, R.M., de Jeu, R.A.M. , Wagner, W., McCabe, M.F., Evans, J.P., van Dijk, A.I.J.M. (2012). Trend-preserving blending of passive and active microwave soil moisture retrievals, Remote Sensing of Environment, 123, 280-297, doi: 10.1016/j.rse.2012.03.014

OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/soil_moisture/docs/v03.2/CCI2_Soil_Moisture_DL2.1_ATBD_v3.2_01_Executive_Summary.pdf

Algorithm Theoretical Baseline Document (ATBD) D2.1 Version 03.2: Executive Summary
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/soil_moisture/docs/v03.2/CCI2_Soil_Moisture_DL2.1_ATBD_v3.2_03_passive.pdf

Algorithm Theoretical Baseline Document (ATBD) D2.1 Version 03.2: Soil Moisture Retrievals from Passive Microwave Sensors
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/soil_moisture/docs/v03.2/CCI2_Soil_Moisture_DL2.1_ATBD_v3.2_02_active.pdf

Algorithm Theoretical Baseline Document (ATBD) D2.1 Version 03.2: Active Soil Moisture Retrievals
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/soil_moisture/docs/v03.2/CCI2_Soil_Moisture_DL2.1_ATBD_v3.2_04_merging.pdf

Algorithm Theoretical Baseline Document (ATBD) D2.1 Version 03.2 Merging Active and Passive Soil Moisture Retrievals
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/soil_moisture/docs/v03.2/ESA_CCI_SM_PSD_D1.2.1_v1.9.pdf

Product Specification Document (PSD) D1.2.1 Version 1.9
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/neodc/esacci/soil_moisture/metadata/display_defaults/display_metadata_esacci.SOILMOISTURE.day.L3S.SSMV.multi-sensor.multi-platform.COMBINED.03-2.r1.json

Suggested metadata for display_metadata_esacci.SOILMOISTURE.day.L3S.SSMV.multi-sensor.multi-platform.COMBINED.03-2.r1.json
OnLine resource
Protocol Linkage Name
https://climate.esa.int

ESA Climate Change Initiate website
OnLine resource
Protocol Linkage Name
https://climate.esa.int/projects/soil-moisture

ESA CCI Soil Moisture project website
Hierarchy level
Dataset

Conformance result

Title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication)
2010-12-08
Statement

Data were processed by the ESA CCI Soil Moisture project team and transferred to CEDA for the ESA CCI Open Data Portal Project.

This dataset forms part of the CCI Soil Moisture v03.2 dataset collection (doi:10.5285/d2eea061026240eb8a2f9cc64a691338. http://dx.doi.org/10.5285/d2eea061026240eb8a2f9cc64a691338 )

Metadata

File identifier
7c7a38b2d2ce448b99194bff85a85248 XML
Metadata language
English
Character set
UTF8
Parent identifier
ESA Soil Moisture Climate Change Initiative (Soil_Moisture_cci): Version 03.2 data collection

d2eea061026240eb8a2f9cc64a691338
Hierarchy level
Dataset
Date stamp
2025-11-17T03:14:46
Metadata standard name
UK GEMINI
Metadata standard version

2.3
Metadata author
Organisation name Individual name Electronic mail address Role

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Point of contact
 
 

Overviews

Spatial extent

thumbnail

Keywords

GEMET - INSPIRE themes, version 1.0

orthoimagery


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