Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 15, issue 24
Articles | Volume 15, issue 24
https://doi.org/10.5194/gmd-15-9057-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-15-9057-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 24
Development and technical paper
 | 
20 Dec 2022
Development and technical paper |  | 20 Dec 2022

An ensemble Kalman filter-based ocean data assimilation system improved by adaptive observation error inflation (AOEI)

Shun Ohishi, Takemasa Miyoshi, and Misako Kachi

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Short summary
An adaptive observation error inflation (AOEI) method was proposed for atmospheric data assimilation to mitigate erroneous analysis updates caused by large observation-minus-forecast differences for satellite brightness temperature around clear- and cloudy-sky boundaries. This study implemented the AOEI with an ocean data assimilation system, leading to an improvement of analysis accuracy and dynamical balance around the frontal regions with large meridional temperature differences.
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