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Impact of Topography on Circulation and Water Mass Transformation in 0.72 HYCOM-CICE Arctic Ocean

Dmitry Dukhovskoy, Eric Chassignet, Joseph Metzger, Pam Posey, Alan Wallcraft
(Abstract received 01/06/2011 for session X)

The numerical simulation of the Arctic Ocean is challenging due to the complex processes that control the ocean flow and water mass transformation within the basin. Topography of the Arctic Ocean and adjacent basins plays a major role in determining the flow field and thermohaline structure in the Arctic Ocean. Coarse resolution models of the Arctic Ocean simplify topography either by closing off the Arctic shelves and Bering Strait, or by closing narrow straits in the Canadian Arctic Archipelago, or both. A suite of numerical experiments is run with 0.72-degree resolution HYCOM-CICE modeling system (ARCc0.72) in order to analyze sensitivity of model solutions to topography representation in the Arctic Ocean. Results from ARCc0.72 model experiments with closed/open Bering Strait, channels of the Arctic Archipelago, and Barents Sea shelf are discussed.

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2011 LOM Workshop, Miami, Florida February 7 - 9, 2011