Global Sea Ice Concentration (SSMIS)

Operational Near real time product

Ice concentration is computed from atmospherically corrected SSMIS brightness temperatures, using a combination of state-of-the-art algorithms. The product series is operational since 2005. This product is complementary to the AMSR-2 global sea ice concentration product (OSI-408 series).

Acronym : GBL SICO
Product navigator reference :


OSI SAF producer : Danish Meteorological Institute
Identifier : OSI-401-d
Digital object identifier (DOI) 10.15770/EUM_SAF_OSI_NRT_2004
Acronym for EDC (APNM) : OSICOGB
Citation : See at bottom
Processing level : L3
Satellite input : DMSP/SSMIS
Other input : NWP outputs
Temporal sampling : 1 per day
Central time : 12:00
Timeliness : ? The timeliness is the time elapsing from the sensing time of the last contributing file to the product dissemination to users. It is similar to the latency. 5 h
Spatial coverage : Global
Spatial sampling : 10 km
Projection : Polar Stereographic
File Formats : HL FTP Server (NetCDF3), EDC (NetCDF3), EUMETCast (NetCDF3)
Characteristics & methods : Daily averaged fractional ice cover in percentage. Include uncertainty estimates.
Data Access

OSI SAF FTP server (last 31 days)

Directory: ice/conc/



OSI SAF FTP server (archive)

Directory: ice/conc/

EUMETSAT Multicast

Redistribution by Copernicus Marine Service

Accuracy Requirements
Target accuracy : 10 % for NH-product. 15 % for SH-product
Verification/validation method : Comparison with high resolution manual ice charts (available between twice a week and once a week): the performance shall be validated for only the “ice” and “water” cases, separately.
Applications and users
Usage : NWP and Ocean/Ice models, operational Met and Sea Ice services.
Authorised to be operational / released :
Declared operational / released since :
On EUMETCast since :
On EDC since :
On FTP server since :
First date :
Full series temporal coverage : 2005-onwards
Detailed history :

The product series is operational since 2005.

  • version OSI-401 from 2005 to 26/05/2016
  • version OSI-401-b from 26/05/2016 to 24/04/2023
  • version OSI-401-d since 24/04/2023
Citation : OSI SAF Global Sea Ice Concentration (SSMIS), OSI-401-d, doi:10.15770/EUM_SAF_OSI_NRT_2004. EUMETSAT Ocean and Sea Ice Satellite Application Facility. Data extracted from [distributor/distribution mean]: ([extracted period],) ([extracted domains],) accessed [download date]

The content within square brackets "[…]" is to be replaced with whatever distributor, period, domain or download date is relevant to the data being used. The "extracted period" and "extracted domains" are only needed if a subset of the data is being used.
Suggestions for "distributor/distribution mean": OSI SAF FTP server/the EUMETSAT Data Centre/EUMETCast/name and URL of a redistributor...
  • Improved algorithm, will supersedes OSI-401-b.

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