Full resolution Metop Sea Surface Temperature metagranules

Full resolution Metop Sea Surface Temperature metagranules

Operational Near real time product

Level 2 sub-skin Sea Surface Temperature derived from AVHRR on Metop-C, global and provided in full-resolution swath (1 km at nadir), in GHRSST compliant netCDF format.

Acronym : MGR SST
Product navigator reference :


OSI SAF producer : Météo-France
Identifier : OSI-204-c
Digital object identifier (DOI) 10.15770/EUM_SAF_OSI_NRT_2013
Acronym for EDC (APNM) : MGR SST
Citation : See at bottom
Processing level : L2P
Satellite input : Metop-C/AVHRR
Other input : ECMWF outputs (temperature, humidity and aerosols profiles)
Temporal sampling : 480 per day (each 3min)
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. 4h
Spatial coverage : Global
Spatial sampling : 1km
Projection : Swath
File Formats : LML FTP Server (NetCDF4)
Characteristics & methods : The satellite input data has successively come from Metop-A, Metop-B and Metop-C level 1 data processed at EUMETSAT. SST is retrieved from AVHRR infrared channels (3.7, 10.8 and 12.0 µm) using a multispectral algorithm and a cloud mask.
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/l2p/global/

OSI SAF backup FTP (last 7 days)

Directory: ifremer/cersat/projects/osisaf/sst/l2p/global/

Accuracy Requirements
Target accuracy : monthly absolute mean difference: 0,5 K, standard deviation : 0,8 K
Verification/validation method : routine comparison with drifting buoy measurements
Authorised to be operational / released :
Declared operational / released since :
On FTP server since :
First date :
Full series temporal coverage : 2012-onwards
Detailed history :

The product series is operational since 2007:

  • version OSI-204 from 2007 to 2016
  • version OSI-204-b from 2016 onwards
  • version OSI-204-c from 2020 onwards
Citation : OSI SAF Full resolution Sea Surface Temperature metagranules (Metop-C) 2020-onwards, OSI-204-c, doi:10.15770/EUM_SAF_OSI_NRT_2013. 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 Temperatures (GHRSST).

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

    This product has been distributed in addition to the Metop-B MGR SST (OSI-204-b) but only on the OSI SAF means (FTP, HTTPS, Thredds, Opendap), not on EUMETCast from November 2020.

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