The Cryosphere
The Cryosphere
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Articles | Volume 20, issue 6
Articles | Volume 20, issue 6
https://doi.org/10.5194/tc-20-3299-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-3299-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 6
Research article
 | 
03 Jun 2026
Research article |  | 03 Jun 2026

Sea ice data assimilation in ORAS6

Philip Browne, Eric de Boisseson, Sarah Keeley, Charles Pelletier, and Hao Zuo

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Short summary
An initial estimate of sea ice conditions are required to start modern weather forecasting models. To get these we have to combine observations, typically from satellites, with previous estimates of the sea ice conditions. This paper talks about how we do this in the latest version of the model, where the sea ice state has to be specified for ice of different thicknesses. We describe the method that is used when we produce an estimate for every hour for the past 50 years.
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