Meteosat Sea Surface Temperature

Operational Near real time product

Level 3 hourly sub-skin Sea Surface Temperature derived from Meteosat at 0° longitude, covering 60S-60N and 60W-60E and re-projected on a 0.05° regular grid, in GHRSST compliant netCDF format.

Acronym : MET SST
Product navigator reference :


OSI SAF producer : Météo-France
Identifier : OSI-206-a
Digital object identifier (DOI) 10.15770/EUM_SAF_OSI_NRT_2014
Citation : See at bottom
Processing level : L3C
Satellite input : Meteosat-10/SEVIRI
Other input : NWP outputs (temperature and humidity profiles, aerosols optical depth), Sea Surface Temperature analysis (OSTIA), cloud mask
Temporal sampling : 24 per day
Timeliness : ? The timeliness is the time elapsing from the sensing time of the last contributing file to the product dissemination to users. It is similar to the latency. 3h
Spatial coverage : East Atlantic, West Indian: 60N-60S 60W-60E
Spatial sampling : 0.05° Lat-Lon
Projection : cylindrical equidistant
File Formats : LML FTP Server (NetCDF4), EDC (NetCDF4), EUMETCast (NetCDF4)
Characteristics & methods : The satellite input data come from the imager SEVIRI on MSG satellites (Meteosat-11 then Meteosat-10). SST is retrieved from SEVIRI infrared channels (10.8 and 12.0 µm) using a multispectral algorithm and the cloud mask from NWC SAF.
Atmospheric profiles of water vapor and temperature from a numerical weather prediction model, Sea Surface Temperature from an analysis, together with a radiative transfer model, are used to correct the multispectral algorithm for regional and seasonal biases due to changing atmospheric conditions.
The quality of the products is monitored regularly by daily comparison of the satellite estimates against buoy measurements.
The product format is compliant with the GHRSST Data Specification (GDS) version 2. Users are advised to use data only with quality levels 3,4 and 5.
Data Access
Credentials for access to OSI SAF tools For the FTP access, please use the username anonymous.

OSI SAF FTP (main, full archive)

Directory: ifremer/cersat/projects/osisaf/sst/l3c/east_atlantic_west_indian/

OSI SAF backup FTP (last 7 days)

Directory: ifremer/cersat/projects/osisaf/sst/l3c/east_atlantic_west_indian/

EUMETSAT Multicast

Redistribution by PO.DAAC

Accuracy Requirements
Target accuracy : monthly absolute mean difference: 0.5 K, standard deviation: 1 K
Verification/validation method : routine comparison with drifting buoy measurements
Declared operational / released since :
On EUMETCast since :
On EDC since :
On FTP server since :
First date :
Full series temporal coverage : 2004-onwards
Detailed history :

The product series is operational since 2004:

  • version OSI-206 (Meteosat-8, Meteosat-9 and Meteosat-10) from 2004 to 20/02/2018
  • version OSI-206-a (Meteosat-11 until 21/03/2023, later on Meteosat-10) from 20/02/2018 onwards

From 20/02/2018, using cloud mask from NWC SAF software v2016.

From 19/01/2021, processed with a new chain: improved SST methodology, especially the bias correction parameterization, using cloud mask from NWC SAF software v2018

Citation : OSI SAF Meteosat 0° Sea Surface Temperature 2018-onwards, OSI-206-a, doi:10.15770/EUM_SAF_OSI_NRT_2014. EUMETSAT Ocean and Sea Ice Satellite Application Facility. Data extracted from [distributor/distribution mean]: ([extracted period],) ([extracted domains],) accessed [download date]

The content within square brackets "[…]" is to be replaced with whatever distributor, period, domain or download date is relevant to the data being used. The "extracted period" and "extracted domains" are only needed if a subset of the data is being used.
Suggestions for "distributor/distribution mean": OSI SAF FTP server/the EUMETSAT Data Centre/EUMETCast/name and URL of a redistributor...
  • This product format is compliant with the Data Specification (GDS) version 2 from the Group for High Resolution Sea Surface Temperature (GHRSST).

    GHRSST identifier (collection id): SEVIRI_SST-OSISAF-L3C-v1.0

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