Assessment of simulations of a polar low with the Canadian Regional Climate Model

Acknowledgments Computations were made on the supercomputer Beluga, managed by Calcul Que´bec and the Digital Research Alliance of Canada. The authors are deeply indebted to Katja Winger for her essential support in the use of the CRCM6/GEM4, as well as for downloading and preparing available ERA5 reanalyses. The authors would also like to thank Franc¸ois Roberge for his valu- able help in the use of the r.diag toolkit and the CRCM6/GEM4. Author Contributions Conceptualization: Marta Moreno-Iba´ñez, Rene´ Laprise. Formal analysis: Marta Moreno-Iba´ñez, Rene´ Laprise, Philippe Gachon. Funding acquisition: Rene´ Laprise. Investigation: Marta Moreno-Iba´ñez. Methodology: Marta Moreno-Iba´ñez, Rene´ Laprise. Project administration: Rene´ Laprise. Resources: Rene´ Laprise. Software: Marta Moreno-Iba´ñez. Supervision: Rene´ Laprise, Philippe Gachon. Validation: Rene´ Laprise, Philippe Gachon. Visualization: Marta Moreno-Iba´ñez. Writing – original draft: Marta Moreno-Iba´ñez. Writing – review & editing: Marta Moreno-Iba´ñez, Rene´ Laprise, Philippe Gachon. References 1. Walsh JE, Ballinger TJ, Euskirchen ES, Hanna E, Mård J, Overland JE, et al. Extreme weather and cli- mate events in northern areas: A review. Earth-Science Reviews. 2020; 209: 103324. https://doi.org/ 10.1016/j.earscirev.2020.103324 2. Turner J, Rasmussen EA, Carleton AM. Introduction. In: Rasmussen EA, Turner J, editors. Polar Lows: Mesoscale Weather Systems in the Polar Regions. Cambridge: Cambridge University Press; 2003. p. 1–51.

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