Global Sea Ice Edge

IDENTIFICATION
DescriptionIce classes are assigned from atmospherically corrected SSMIS brightness temperatures and ASCAT backscatter values, using a Bayesian approach. Both the sea ice edge product and the sea ice type product are classification products differing between different ice classes. Sea ice edge differs between the classes open water, open ice, and closed ice which are defined from the ice concentration thresholds of 30 proc. and 70 proc., respectively. The product series is operational since 2005 (version OSI-403-b since 15/09/2015).
Product typeNear real time productThumbnail
StatusOperational
IdentifierOSI-402-b
AcronymGBL SIED
Acronym for EDC (APNM)OSIEDGB
Product navigator referenceEO:EUM:DAT:MULT:GBLSIED
CHARACTERISTICS
Processing levelL3
Satellite inputDMSP/SSMIS and Metop/ASCAT
Other inputECMWF forecast for atmospheric correction
Frequency1 per day
Central time12:00
Timeliness5 h
Spatial coverageglobal
Spatial sampling10 km
Characteristics & methodsDiscrimination Open ice/Closed ice/No ice. Multisensor analysis, daily average. Risk mitigation against sensor degradation.
ACCURACY REQUIREMENTS
Thresold accuracy30 km, distance to ice edge (yearly average)
Target accuracy20 km (yearly average)
Optimal accuracy10 km (yearly average)
Verification/validation methodComparison with high resolution manual ice charts
DATA ACCESS
OSI SAF ProducerNorwegian Meteorological Institute
Discovery mean(s) and format(s)EUMETCast (GRIB1)
MET Norway FTP Server (GRIB1)
MET Norway FTP Server (NetCDF3)
MET Norway FTP Server (HDF5)
RedistributionSEAICE_GLO_SEAICE_L4_NRT_OBSERVATIONS_011_001 :
http://marine.copernicus.eu/web/69-myocean-interactive-catalogue.php?option=com_csw&view=details&product_id=SEAICE_GLO_SEAICE_L4_NRT_OBSERVATIONS_011_001
Link FTP serverMET FTP server
Applications and usersNWP and Ocean/Ice models, operational Met and Sea Ice services.
VIEW MORE DOCUMENTATION
Product web pageDescriptionProduct User ManualPUM
Live production statusProduction statusAlgorithm Theoretical Baseline DocumentATBD
Last products at a glanceQuicklookScientific Validation ReportSVR
Continuous monitoringQuality
HISTORY, COMMENTS

Dynamical algorithm to improve transitions between seasons

Authorised to be operational/released29/05/2015
Declared operational/released15/09/2015
On EUMETCast since15/09/2015
In EDC since15/09/2015