Articles | Volume 17, issue 5
Research article
08 May 2023
Research article |  | 08 May 2023

Modelling the evolution of Arctic multiyear sea ice over 2000–2018

Heather Regan, Pierre Rampal, Einar Ólason, Guillaume Boutin, and Anton Korosov

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Cited articles

Aaboe, S., Sørensen, A., Lavergne, T., and Eastwood, S.: Copernicus Climate Data Records Sea Ice Edge and Sea Ice Type Product User Guide and Specification, Tech. rep., 2019. a, b, c, d
Babb, D. G., Galley, R. J., Howell, S. E. L., Landy, J. C., Stroeve, J. C., and Barber, D. G.: Increasing multiyear sea ice loss in the Beaufort Sea: A new export pathway for the diminishing multiyear ice cover of the Arctic Ocean, Geophys. Res. Lett., 49, e2021GL097595,, 2022. a
Barnier, B., Madec, G., Penduff, T., Molines, J., Treguier, A., Sommer, J. L., Beckmann, A., Biastoch, A., Böning, C., Dengg, J., Derval, C., Durand, E., Gulev, S., Remy, E., Talandier, C., Theetten, S., Maltrud, M., McClean, J., and Cuevas, B. D.: Impact of partial steps and momentum advection schemes in a global ocean circulation model at eddy permitting resolution, Ocean Dynam., 56, 543–567,, 2006. a
Boutin, G., Ólason, E., Rampal, P., Regan, H., Lique, C., Talandier, C., Brodeau, L., and Ricker, R.: Arctic sea ice mass balance in a new coupled ice–ocean model using a brittle rheology framework, The Cryosphere, 17, 617–638,, 2023. a, b, c, d, e, f, g, h, i
Colony, R. and Thorndike, A. S.: An estimate of the mean field of Arctic sea ice motion, J. Geophys. Res., 89, 10623–10629,, 1984. a
Short summary
Multiyear ice (MYI), sea ice that survives the summer, is more resistant to changes than younger ice in the Arctic, so it is a good indicator of sea ice resilience. We use a model with a new way of tracking MYI to assess the contribution of different processes affecting MYI. We find two important years for MYI decline: 2007, when dynamics are important, and 2012, when melt is important. These affect MYI volume and area in different ways, which is important for the interpretation of observations.