143580 - Experimental evidence for a universal threshold characterizing wave-induced.pdf (3.55 MB)
Experimental evidence for a universal threshold characterizing wave-induced sea ice break-up
journal contributionposted on 2023-05-20, 22:12 authored by Voermans, JJ, Rabault, J, Filchuk, K, Ryzhov, I, Petra HeilPetra Heil, Marchenko, A, Collins, CO, Dabboor, M, Sutherland, G, Babanin, AV
Waves can drastically transform a sea ice cover by inducing break-up over vast distances in the course of a few hours. However, relatively few detailed studies have described this phenomenon in a quantitative manner, and the process of sea ice break-up by waves needs to be further parameterized and verified before it can be reliably included in forecasting models. In the present work, we discuss sea ice break-up parameterization and demonstrate the existence of an observational threshold separating breaking and non-breaking cases. This threshold is based on information from two recent field campaigns, supplemented with existing observations of sea ice break-up. The data used cover a wide range of scales, from laboratory-grown sea ice to polar field observations. Remarkably, we show that both field and laboratory observations tend to converge to a single quantitative threshold at which the wave-induced sea ice breakup takes place, which opens a promising avenue for robust parametrization in operational forecasting models.
Department/SchoolInstitute for Marine and Antarctic Studies
Place of publicationGermany
Rights statementCopyright the Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.