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Processes controlling surface, bottom and lateral melt of Arctic sea ice in a state of the art sea ice model

Tsamados, M; Feltham, D; Petty, A; Schroeder, D; Flocco, D; (2015) Processes controlling surface, bottom and lateral melt of Arctic sea ice in a state of the art sea ice model. Philosophical Transactions of The Royal Society A-Mathematical Physical and Engineering Sciences , 373 , Article 2052. 10.1098/rsta.2014.0167.

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Abstract

We present a modelling study of processes controlling the summer melt of the Arctic sea ice cover. We perform a sensitivity study and focus our interest on the thermodynamics at the ice–atmosphere and ice– ocean interfaces. We use the Los Alamos community sea ice model CICE, and additionally implement and test three new parametrization schemes: (i) a prognostic mixed layer; (ii) a three equation boundary condition for the salt and heat flux at the ice–ocean interface; and (iii) a new lateral melt parametrization. Recent additions to the CICE model are also tested, including explicit melt ponds, a form drag parametrization and a halodynamic brine drainage scheme. The various sea ice parametrizations tested in this sensitivity study introduce a wide spread in the simulated sea ice characteristics. For each simulation, the total melt is decomposed into its surface, bottom and lateral melt components to assess the processes driving melt and how this varies regionally and temporally. Because this study quantifies the relative importance of several processes in driving the summer melt of sea ice, this work can serve as a guide for future research priorities.

Type: Article
Title: Processes controlling surface, bottom and lateral melt of Arctic sea ice in a state of the art sea ice model
DOI: 10.1098/rsta.2014.0167
Publisher version: http://dx.doi.org/10.1098/rsta.2014.0167
Language: English
Additional information: Copyright 2015 The Author(s) Published by the Royal Society. All rights reserved.
Keywords: sea ice model, melt, processes
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1473160
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