Global Sea Ice Type

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 type differs between First-year ice and Multiyear ice which are defined from target regions of known ice types. The product series is operational since 2005 (version OSI-403-b since 15/09/2015).
Product typeArchived NRT productThumbnail
StatusSuperseded
IdentifierOSI-403-b
AcronymGBL SITY
Acronym for EDC (APNM)OSITYGB
Product navigator referenceEO:EUM:DAT:MULT:GBLSITY
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 First year, Multi year.
Multisensor analysis, daily average. Risk mitigation against sensor degradation.
ACCURACY REQUIREMENTS
Thresold accuracy200000 km2 monthly std.dev. in difference from running mean
Target accuracy100000 km2 monthly std.dev. in difference from running mean
Optimal accuracy50000km2 monthly std.dev. in difference from running mean
Verification/validation methodCompare NH multi-year area with 11-days running mean.
DATA ACCESS
OSI SAF ProducerNorwegian Meteorological Institute
Diffusion 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

Improvement compared to OSI-403-a : Dynamical training statistics to improve transitions between seasons and between sensors, use of SSMIS from F18.

Improvement planned in OSI-403-c : Introduction of the new sensor AMSR2 from JAXA's GCOM-W1, and upgrade to include ASCAT from Metop-B.

Authorised to be operational/released29/05/2015
Declared operational/released15/09/2015
On EUMETCast since15/09/2015
In EDC since15/09/2015
Last product date29/05/2017