Impact of ocean vertical-mixing parameterization on Arctic sea ice and upper-ocean properties using the NEMO-SI3 model

Allende, Sofia; Treguier, Anne Marie; Lique, Camille; de Boyer Montégut, Clément; Massonnet, François; Fichefet, Thierry; Barthélemy, Antoine

doi:https://doi.org/10.5194/gmd-17-7445-2024

Articles | Volume 17, issue 20

https://doi.org/10.5194/gmd-17-7445-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Nucleus for European Modelling of the Ocean - NEMO

https://doi.org/10.5194/gmd-17-7445-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 20

Model evaluation paper

|

25 Oct 2024

Model evaluation paper |

| 25 Oct 2024

Impact of ocean vertical-mixing parameterization on Arctic sea ice and upper-ocean properties using the NEMO-SI3 model

Sofia Allende, Anne Marie Treguier, Camille Lique, Clément de Boyer Montégut, François Massonnet, Thierry Fichefet, and Antoine Barthélemy

Data sets

Sensitivity experiments of the parameters involved in the turbulent kinetic energy mixed layer penetration scheme of the NEMO ocean model Sofia Allende Contador https://doi.org/10.14428/DVN/NZSKTU

Mixed layer depth over the global ocean : a climatology computed with a density threshold criterion of 0.03 kg/m3 from the value at the reference depth of 5 m Clément de Boyer Montégut https://doi.org/10.17882/98226

World ocean database 2023 James R. Reagan et al. https://doi.org/10.25921/va26-hv25

Sea ice concentration daily gridded data from 1978 to present derived from satellite observations Copernicus Climate Change Service (C3S) https://doi.org/10.24381/cds.3cd8b812

PIOMAS Ice Volume Data J. Zhang et al. https://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/

Model code and software

sofiallende/nemo: v4.2.1 (NEMO-v4.2.1) Sofia Allende https://doi.org/10.5281/zenodo.10732752

Short summary

We study the parameters of the turbulent-kinetic-energy mixed-layer-penetration scheme in the NEMO model with regard to sea-ice-covered regions of the Arctic Ocean. This evaluation reveals the impact of these parameters on mixed-layer depth, sea surface temperature and salinity, and ocean stratification. Our findings demonstrate significant impacts on sea ice thickness and sea ice concentration, emphasizing the need for accurately representing ocean mixing to understand Arctic climate dynamics.