Impact of mesoscale eddy parameterization on Arctic Atlantic Water circulation and heat transport in the eddy-permitting grey zone

Pemberton, Per; Wåhlström, Iréne; Fredriksson, Sam T.

doi:10.5194/os-22-2375-2026

Articles | Volume 22, issue 4

https://doi.org/10.5194/os-22-2375-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-22-2375-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 4

Research article

|

11 Aug 2026

Research article |

| 11 Aug 2026

Impact of mesoscale eddy parameterization on Arctic Atlantic Water circulation and heat transport in the eddy-permitting grey zone

Per Pemberton, Iréne Wåhlström, and Sam T. Fredriksson

Data sets

Dataset for Impact of mesoscale eddy parameterization on Arctic Atlantic Water circulation and heat transport in the eddy-permitting grey zone P. Pemberton et al. https://doi.org/10.5281/zenodo.20781603

ORAS5 global ocean reanalysis monthly data from 1958 to present Copernicus Climate Change Service, Climate Data Store https://doi.org/10.24381/cds.67e8eeb7

Dai and Trenberth Global River Flow and Continental Dis- charge Dataset A. Dai https://doi.org/10.5065/D6V69H1T

ARCTIC_MULTIYEAR_PHY_002_003 ARCTIC_MULTIYEAR_PHY_002_003 https://doi.org/10.48670/moi-00007

Eddy kinetic energy in the Arctic Ocean from moored velocity observations Wilken-Jon von Appen et al. https://doi.org/10.1594/PANGAEA.941165

Short summary

Mesoscale ocean eddies (10–100 km) are crucial for transporting heat and salt in global circulation. While traditionally parameterized in ocean models, advances in computational power allow them to be partly resolved, questioning whether parameterizations should be used in this regime. We examine implications for Atlantic water circulation and heat transport to the Arctic, highlighting challenges in using – or omitting – mesoscale eddy parameterizations.