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| Titel |
The impact of refreezing of melt ponds on Arctic sea ice thinning |
| VerfasserIn |
Daniela Flocco, Daniel Feltham, Eleanor Bailey, David Schroeder |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250089912
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| Publikation (Nr.) |
 EGU/EGU2014-4125.pdf |
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| Zusammenfassung |
| The presence of melt ponds over the sea ice cover in the Arctic has a profound impact on the surface albedo inducing a positive feedback leading to sea ice thinning.
At the end of summer the melt ponds, covering a large sea ice, start freezing and get trapped between the sea ice beneath and a thin surface layer of ice.
The pond water also stores latent heat that is released as they freeze. Ponds trapped under a layer of refrozen ice have been observed in the Arctic and our model results, confirmed by observations, show that they are present for a few months after the formation of the initial ice lid.
In this work we study the ice/water temperature profile in the trapped pond system and its evolution until the pond freezes and show the impact of the presence of a trapped pond on sea ice growth. We show a number of sensitivity studies assessing the impact of varying the model’s meteorological inputs, sea ice parameters and ocean salinity. |
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