Global Metop Sea Surface Temperature

IDENTIFICATION
DescriptionGHRSST L3C global sub-skin Sea Surface Temperature from the Advanced Very High Resolution Radiometer (AVHRR) on Metop satellites (currently Metop-B) (GDS V2) : global 12 hourly synthesis on a 0.05° global grid
Product typeNear real time productGlobal Metop Sea Surface Temperature
StatusOperational
IdentifierOSI-201-b
AcronymGBL SST
Acronym for EDC (APNM)OSSTGLB
Product navigator referenceEO:EUM:DAT:METOP:GLB-SST
CHARACTERISTICS
Processing levelL3C
Satellite inputMetop-B/AVHRR
Other inputECMWF outputs (temperature, humidity and aerosols profiles)
Frequency2 per day
Central time00:00, 12:00
Timeliness6 h
Spatial coverageglobal
Spatial sampling0.05°
Projectioncylindrical equidistant
Characteristics & methodsSubskin temperature;
multispectral algorithm

Global AVHRR level 1b data are acquired at Météo-France/Centre de Météorologie Spatiale (CMS) through the EUMETSAT/EUMETCAST system. SST is retrieved from the AVHRR infrared channels (3.7, 10.8 and 12.0μm) using a multispectral algorithm. Atmospheric profiles of water vapor and temperature from a numerical weather prediction model, together with a radiatiave transfer model, are used to correct the multispectral algorithm for regional and seasonal biases due to changing atmospheric conditions. This global L3C product is derived from full resolution AVHRR l1b data that are re-mapped onto a 0.05 degree grid twice daily. The product format is compliant with the GHRSST Data Specification (GDS) version 2.
ACCURACY REQUIREMENTS
Thresold accuracymonthly bias : 1°C, sdt dev. : 1.5°C
Target accuracymonthly bias : 0.5°C, sdt dev. : 0.8°C
Optimal accuracymonthly bias : 0.1°C, sdt dev. : 0.3°C
Verification/validation methodroutine comparison with drifting buoy measurements
DATA ACCESS
Diffusion mean(s) and format(s)EUMETCast (NetCDF4)
LML FTP Server (NetCDF4)
EDC (GRIB2)
EDC (NetCDF4)
Main FTP serverLML FTP server (hosted by Ifremer)Other FTP server,
other mean(s) to access main server
backup LML FTP server (last 7 days)
Thredds
HTTPS
EUMETCastEUMETCastDiscovery mean(s)Naiad
EUMETSAT Data CentreEDC
RedistributionPODAAC-GHGMB-3CO02 (Metop-B, GDS 2) http://podaac.jpl.nasa.gov/dataset/AVHRR_SST_METOP_B_GLB-OSISAF-L3C-v1.0
Applications and usersOperational Met Services Operational analyses and ocean models Research or Environmental monitoringOSI SAF ProducerMétéo-France
VIEW MORE DOCUMENTATION
Product web pageDescriptionProduct User ManualPUM
Live production statusStatusAlgorithm Theoretical Baseline DocumentATBD
Last products at a glanceQuicklookScientific Validation ReportSVR
Continuous monitoringQuality
HISTORY, COMMENTS
  • 12/01/2017: Stop the GRIB dissemination. The product is now provided only in NetCDF. This product format is compliant with the Data Specification (GDS) version 2 from the Group for High Resolution Sea Surface Temperatures (GHRSST).
  • Sep. 2016 : announce of plan to stop the GRIB dissemination at end of 2016
  • 12/07/2016 : start of the dissemination by EUMETCast in GHRSST NetCDF format, on top the GRIB format.
  • 23/02/2016 : this product supersedes the same product based on Metop-A input (OSI-201)
Authorised to be operational/released31/01/2016
Declared operational/released23/02/2016
On EUMETCast since23/02/2016
In EDC since23/02/2016