Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 18, issue 22
Articles | Volume 18, issue 22
https://doi.org/10.5194/gmd-18-8535-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-18-8535-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 22
Model evaluation paper
 | 
14 Nov 2025
Model evaluation paper |  | 14 Nov 2025

Evaluating the E3SMv2-MPAS ocean–sea ice coupled unstructured model in the Arctic: Atlantification processes and systematic biases

Xinyuan Lv, Huizan Wang, Yu Cao, Kaijun Ren, Yangjun Wang, and Hao Ding

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Short summary
This study evaluates the performance of the varying-resolution mesh model, E3SMv2-MPAS, in simulating key Arctic processes—from sea ice distribution and surface properties to the complex, three-dimensional structures of the Atlantic Water layer. We also pinpoint specific areas where the model still struggles, providing valuable directions for future model development. This progress means scientists can now use this tool more confidently to understand how Arctic ocean layers work and change.
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