Articles | Volume 18, issue 5
Research article
25 Oct 2022
Research article |  | 25 Oct 2022

The role of oceanic heat flux in reducing thermodynamic ice growth in Nares Strait and promoting earlier collapse of the ice bridge

Sergei Kirillov, Igor Dmitrenko, David G. Babb, Jens K. Ehn, Nikolay Koldunov, Søren Rysgaard, David Jensen, and David G. Barber

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Cited articles

Babb, D., Kirillov, S., Kuzyk, Z., Netser, T., Liesch, J., Kamula, C. M., Zagon, T., Barber, D. G., and Ehn, J.: On the intermittent formation of an ice bridge (Nunniq) across Roes Welcome Sound, Northwestern Hudson Bay, and its use to local Inuit hunters, Arctic, 75, 198–224,, 2022. 
Barber, D. G. and Massom, R. A.: The role of sea ice in Arctic and Antarctic polynyas, in: Polynyas: Windows to the World, edited by: Smith, W. O. and Barber, D. G., Elsevier Oceanogr. Ser., 74, 1–54, 2007. 
Barber, D. G., Babb, D. G., Ehn, J. K., Chan, W., Matthes, L., Dalman, L. A., Campbell, Y., Harasyn, M. L., Firoozy, N., Theriault, N., Lukovich, J. V., Zagon, T., Papakyriakou, T., Capelle, D. W., Forest, A., and Gariepy, A.: Increasing mobility of high Arctic sea ice increases marine hazards off the east coast of Newfoundland, Geophys. Res. Lett., 45, 2370–2379,, 2018. 
Beszczynska-Möller, A., Woodgate, R. A., Lee, C., Melling, H., and Karcher, M.: A synthesis of exchanges through the main oceanic gateways to the Arctic Ocean, Oceanography, 24, 82–99,, 2011. 
Bilello, M. A.: Formation, growth, and decay of sea-ice in the Canadian Arctic Archipelago, Arctic, 14, 2–24, 1961. 
Short summary
The sea ice bridge usually forms during winter in Nares Strait and prevents ice drifting south. However, this bridge has recently become unstable, and in this study we investigate the role of oceanic heat flux in this decline. Using satellite data, we identify areas where sea ice is relatively thin and further attribute those areas to the heat fluxes from the warm subsurface water masses. We also discuss the potential role of such an impact on ice bridge instability and earlier ice break up.