Articles | Volume 16, issue 2
https://doi.org/10.5194/tc-16-533-2022
https://doi.org/10.5194/tc-16-533-2022
Research article
 | 
15 Feb 2022
Research article |  | 15 Feb 2022

A new state-dependent parameterization for the free drift of sea ice

Charles Brunette, L. Bruno Tremblay, and Robert Newton

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Cited articles

Andersen, S., Tonboe, R., Kaleschke, L., Heygster, G., and Pedersen, L. T.: Intercomparison of passive microwave sea ice concentration retrievals over the high-concentration Arctic sea ice, J. Geophys. Res.-Oceans, 112, C8, https://doi.org/10.1029/2006JC003543, 2007. a
Aporta, C.: Life on the ice: understanding the codes of a changing environment, Polar Rec., 38, 341–354, https://doi.org/10.1017/S0032247400018039, 2002. a
Armitage, T. W. K., Bacon, S., Ridout, A. L., Petty, A. A., Wolbach, S., and Tsamados, M.: Arctic Ocean surface geostrophic circulation 2003–2014, The Cryosphere, 11, 1767–1780, https://doi.org/10.5194/tc-11-1767-2017, 2017a. a, b, c, d, e, f
Armitage, T. W. K., Bacon, S., Ridout, A. L., Petty, A. A., Wolbach, S., and Tsamados, M.: Arctic Ocean surface geostrophic circulation 2003–2014, The Cryosphere, 11, 1767–1780, https://doi.org/10.5194/tc-11-1767-2017, 2017b (data available at: http://www.cpom.ucl.ac.uk/dynamic_topography). a
Armitage, T. W., Manucharyan, G. E., Petty, A. A., Kwok, R., and Thompson, A. F.: Enhanced eddy activity in the Beaufort Gyre in response to sea ice loss, Nat. Commun., 11, 1–8, https://doi.org/10.1038/s41467-020-14449-z, 2020. a
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Short summary
Sea ice motion is a versatile parameter for monitoring the Arctic climate system. In this contribution, we use data from drifting buoys, winds, and ice thickness to parameterize the motion of sea ice in a free drift regime – i.e., flowing freely in response to the forcing from the winds and ocean currents. We show that including a dependence on sea ice thickness and taking into account a climatology of the surface ocean circulation significantly improves the accuracy of sea ice motion estimates.