Articles | Volume 16, issue 2
The Cryosphere, 16, 533–557, 2022
https://doi.org/10.5194/tc-16-533-2022
The Cryosphere, 16, 533–557, 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 et al.

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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.