Ocean Science
Ocean Science
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Articles | Volume 19, issue 3
Articles | Volume 19, issue 3
https://doi.org/10.5194/os-19-729-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/os-19-729-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 3
Research article
 | 
26 May 2023
Research article |  | 26 May 2023

Improving sea surface temperature in a regional ocean model through refined sea surface temperature assimilation

Silje Christine Iversen, Ann Kristin Sperrevik, and Olivier Goux

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Latest update: 29 Oct 2025
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Short summary
We present two methods to refine the assimilation of satellite sea surface temperatures (SSTs) into a regional ocean model. First, we correct the SSTs for biases and show that this correction reduces the model SST errors. Then, we implement a special observation operator that handles the spatial resolution mismatch between coarse passive microwave SSTs and the high-resolution model. We find that excluding this operator spatially smooths the modeled SST, whereas its inclusion prevents this.
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Data assimilation techniques and applications in coastal and...