The dataset contains 2 archives. The first archive contains all data (saved as netCDF files) relative to the Figures presented in Boutin et al. (2023). The second archive contains monthly averaged fields (saved as netCDF files) of the simulation described in Boutin et al. (2023). They include quantities relative to sea ice properties (icemod files) and to the mass balance (ice growth/melt etc... simba files). They cover the north Atlantic and the Arctic Ocean (north of Bering Strait) for the period 2000-2018. In case information is missing, do not hesitate to contact guillaume.boutin@nersc.no , heather.regan@nersc.no or einar.olason@nersc.no This research has been funded by the Norwegian Research Council (Nansen Legacy: grant no. 27673, FRASIL: grant no. 263044, and ARIA: grant no. 302934), JPI Climate and JPI Oceans (MEDLEY project, under agreement with the Norwegian Research Council, grant no 316730), and by Copernicus Marine Environment Monitoring Service (CMEMS) WIzARd project. CMEMS is implemented by Mercator Ocean in the framework of a delegation agreement with the European Union Copernicus Marine Environment Monitoring Services (contract no. 69), and the European Space Agency through the Cryosphere Virtual Laboratory (CVL, grant no. 4000128808/19/I-NS). This project is supported by Schmidt Futures – a philanthropic initiative that seeks to improve societal outcomes through the development of emerging science and technologies. Nomenclature nextsim: sit: sea ice thickness (cell average) [m] sic: sea ice concentration [-] sic_thin: sea ice concentration of newly formed thin ice (young ice) [m] sit_thin: sea ice thickness of newly formed thin ice (young ice, cell average) [m] siu: u-component ("grid-wise") of the sea ice drift velocity siv: v-component ("grid-wise") of the sea ice drift velocity Mass balance component: mlt_bot: sea ice volume (per cell area) melted at the sea ice bottom per day [m/day] mlt_top: sea ice volume (per cell area) melted at the surface of the sea ice per day [m/day] vice_melt: sea ice volume (per cell area) formed(+)/melted(-) per day [m/day] newice: sea ice volume (per cell area) formed in open water (=supercooling) per day [m/day] del_vi: sea ice volume (per cell area) change of old/thick (i.e not young) ice per day [m/day] del_vi_thin: sea ice volume (per cell area) change of thin newly formed (=young) ice per day [m/day] newice: sea ice volume (per cell area) formed by flooding of snow [m/day] total_growth: sea ice volume (per cell area) formed per day [m/day] basal_growth: sea ice volume (per cell area) formed at the bottom per day [m/day] basal_growth_thin: sea ice volume (per cell area) formed at the bottom of thin/newly formed (=young) ice per day [m/day]