North Atlantic Regional Sea Surface Temperature

Operational Near real time product

This NAR SST product consists in Metop-B/AVHRR and NOAA-20/VIIRS derived sub-skin Sea Surface Temperature over North Atlantic and European Seas at 2 km resolution four times a day.

Acronym : NAR SST
Product navigator reference :


OSI SAF producer : Météo-France
Identifier : OSI-202-c
Acronym for EDC (APNM) : OSSTNARN
Processing level : L3C
Satellite input : Metop-B/AVHRR and NOAA-20/VIIRS
Other input : ECMWF outputs (temperature, humidity and aerosols profiles)
Frequency : 4 per day
Timeliness : 6h
Spatial coverage : North Atlantic
Spatial sampling : 2 km
Projection : polar stereographic
File Formats : LML FTP Server (NetCDF4), EDC (NetCDF4), EDC (GRIB2), EUMETCast (NetCDF4)
Characteristics & methods : Subskin temperature; multispectral algorithm + use of NWP output
Data Access
Other means :


Discovery mean(s) : Naiad
Accuracy Requirements
Target accuracy : monthly bias : 0,5°c, Sdt Deviation : 0,8°c
Verification/validation method : routine comparison with drifting buoy measurements
Applications and users
Usage : Atmosphere and ocean models
Oceanography and fisheries.
Authorised to be operational / released :
Declared operational / released since :
On EUMETCast since :
On EDC since :
On FTP server since :
Expected date for operational/released :
First date :
  • Superseded OSI-202-b (based on Metop-B and NPP) on 19/11/2020

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