Global Low Resolution Sea Ice Drift

IDENTIFICATION
DescriptionIce motion vectors with a time span of 48 hours are estimated by an advanced cross-correlation method (the Continuous MCC, CMCC) on pairs of satellite images. Several single-sensor products are available, along with a merged (multi-sensor) dataset.
Product typeNear real time productThumbnail
StatusOperational
IdentifierOSI-405-c
AcronymGBL LR SIDR
Acronym for EDC (APNM)OSIDRGB
Product navigator referenceEO:EUM:DAT:MULT:GBL-LR-SID
CHARACTERISTICS
Processing levelL3
Satellite inputDMSP/SSMIS, Metop/ASCAT and GCOM-W/AMSR-2
Other inputECMWF outputs
Frequency1 per day
Central time12:00
Timeliness6 h
Spatial coverageGlobal
Spatial sampling62.5 km
ProjectionPolar stereographic
Characteristics & methodsSingle and multi sensor analysis.
Displacement after 48 hours in km.
ACCURACY REQUIREMENTS
Thresold accuracy10 km yearly std deviation on both x and y components after 48 hours displacement
Target accuracy5 km yearly std deviation on both x and y components after 48 hours displacement
Optimal accuracy2 km yearly std deviation on both x and y components after 48 hours displacement
Verification/validation methodCollocation with buoys
DATA ACCESS
OSI SAF ProducerNorwegian Meteorological InstituteMain FTP serverHL FTP server, last 31 days (hosted by MET Norway)
Other FTP serverArchive HL FTP server
Diffusion mean(s) and format(s)MET Norway FTP Server (NetCDF3)Other mean(s) to access main serverThredds
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
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

An new variable is introduced in the OSI-405-c NetCDF files : the product uncertainties. The new variable provides an uncertainty value (aka expected accuracy) for each grid location. In the case of OSI -405-c, the new variable holds the standard deviation of the uncertainty in the components of the ice drift displacement vectors.

Authorised to be operational/released22/11/2016
Declared operational/released30/05/2017
On EUMETCast since30/05/2017
In EDC since30/05/2017
First product date30/05/2017