SMOS Soil Freeze/Thaw

The SMOS F/T Service generates daily information on the Northern hemisphere soil state from SMOS daily gridded level 3 brightness temperatures (data provided by Centre Aval de Traitement des Données SMOS - CATDS). The Service uses two ancillary datasets: ECMWF 2m air temperature data and NSIDC IMS snow cover data. The data are provided in The Equal-Area Scalable Earth Grid (EASE2-Grid) at 25 km x 25 km resolution. The product start date is July 1st 2010.

Detailed information on the algorithm can be found in the Algorithm Theoretical Baseline Document. The latest version is available from the Service web page: http://nsdc.fmi.fi/data/data_smos

Temporal coverage July 2010 - present Temporal resolution: Daily Spatial coverage: 0 - 85 N Spatial resolution 25 km x 25 km Projection Polar-stereographic Grid EASE-2 Data dimension 720 x 720 (columns x rows)

Estimated soil state within a pixel in three levels as follows: 0 – thaw 1 – partially frozen 2 – frozen 255 – no data value

Data and Resources

Additional Info

Field Value
Source ftp://litdb.fmi.fi/outgoing/SMOS-FTService/
Principal Investigator Kimmo Rautiainen
Data Curator Mwaba Hiltunen
Last Updated January 21, 2021, 08:57 (CET)
Created November 22, 2018, 11:41 (CET)
Parameter name(s) soil state
Project/Program name(s) SMOS Freeze and Thaw Processing and Dissemination Service. Funding from ESA ESRIN Contract No. 4000124500/18/I-EF. The development work of the product was started within the SMOS+ Innovation Permafrost (ESA ESRIN Contract no: 4000105184/12/I-BG) project and continued within SMOS+ Frost2Study (ESRIN Contract no: 4000110973/14/NL/FF/lf).
Observing system name ESA SMOS