Record Details
Preconditioning of the 2007 sea-ice melt in the eastern Beaufort Sea, Arctic Ocean
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Preconditioning of the 2007 sea-ice melt in the eastern Beaufort Sea, Arctic Ocean |
| Names |
Hutchings, Jennifer K.
(creator) Perovich, Donald K. (creator) |
| Date Issued | 2015 (iso8601) |
| Note | To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by International Glaciological Society and can be found at: http://www.igsoc.org/annals/56/69/ |
| Abstract | During summer 2007, perennial sea ice in the Beaufort Sea, Arctic Ocean, experienced an unprecedented amount of basal melt. It has previously been shown that this basal melt was linked to an increase in open-water fraction, increasing absorption of solar radiation into the ocean. GPS ice drifters, deployed around the site where the unprecedented basal melt was observed, provide a coincident observation of local divergence. This divergence is used to drive a multi-thickness category thermodynamic sea-ice model. We demonstrate that ∼75% of the observed open-water fraction by midsummer 2007 can be attributed to ice pack divergence during the growth season, preconditioning the ice pack for early melt in summer. Divergence during the melt season explains the remaining 25% of open water. Enhanced ice pack divergence in spring and summer 2007, in response to the increased transport of ice out of the Beaufort Sea, was sufficient to explain the melt observed in summer 2007 and the heat stored in the upper ocean at the end of summer. |
| Genre | Article |
| Topic | sea-ice dynamics |
| Identifier | Hutchings, J. K., & Perovich, D. K. (2015). Preconditioning of the 2007 sea-ice melt in the eastern Beaufort Sea, Arctic Ocean. Annals of Glaciology, 56(69), 94-98. doi:10.3189/2015AoG69A006 |
