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Sea-Ice Concentration (AMSR3)

Operational Near real time product

Ice concentration is computed from atmospherically corrected AMSR3 brightness temperatures, using a combination of state-of-the-art algorithms. This product is the continuation of the AMSR2 product.

Identification
Acronym : GBL AMSR SICO
EUMETSAT collection ref. :

EO:EUM:DAT:1178

OSI SAF producer : Danish Meteorological Institute
Identifier : OSI-408-g
Id for archive (APNM) : OSICOAMSRGB
Licence/Attribution/Citation : CC BY 4.0 See below
Characteristics
Processing level : L3
Satellite input : GOSAT-GW/AMSR3
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 Format(s) : NetCDF4
Characteristics & methods : The Level 3 AMSR Sea Ice Concentration consists of these major fields:
- Sea ice concentration. Indicates the fraction of a given ocean grid point covered by ice (daily averaged fractional ice cover in percentage).
- Uncertainties. The algorithm uncertainty, the smearing uncertainty and the resulting total uncertainty of each sea ice concentration grid cell.
- Confidence level. Based on the daily standard deviation within each grid cell, provided as a guide.
Data Access

OSI SAF FTP server (last 31 days)

ftp://osisaf.met.no/prod/

Directory: ice/conc_amsr

OSI SAF FTP server (archive)

ftp://osisaf.met.no/archive/

Directory: ice/conc_amsr

OSI SAF Thredds

https://thredds.met.no/thredds/catalog/osisaf/osisaf.html

https://thredds.met.no/thredds/catalog/osisaf/osisaf_seaiceconc.html

EUMETSAT Multicast

EUMETCast

EUMETSAT Archive

EUMETSAT Data Centre

<p><a href="https://user.eumetsat.int/catalogue/EO:EUM:DAT:1178/access">Direct link</a></p>

Redistribution by Copernicus Marine Service

https://marine.copernicus.eu/

Direct link

Accuracy Requirements
Target accuracy : 10 % for NH-product. 15 % for SH-product
Verification/validation method : Comparison with high spatial 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 : Climate models, NWP and Ocean/Ice models, operational Met and Sea Ice services.
History
Authorised to be operational / released :
Declared operational / released since :
On EUMETCast since :
On FTP server since :
First date :
Full series temporal coverage : 2016-onwards
Detailed history :

The product series is operational since 2017, some data are available from a bit earlier, end of 2016.

  • version OSI-408 from 19/09/2016 to 25/04/2023
  • version OSI-408-a since 25/04/2023 (AMSR2-based)
  • version OSI-408-g since 01/09/2026 (AMSR3-based)
Licence/Attribution/Citation
Licence : CC BY 4.0
Attribution : You must include attribution to EUMETSAT OSI SAF
Recommended citation : EUMETSAT OSI SAF, Global Sea Ice Concentration (AMSR3) (2026), OSI-408-g, doi: 10.15770/EUM_SAF_OSI_NRT_2023
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