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Does ocean coupling matter for the northern extratropical response to projected Arctic sea ice loss?
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2016
Source: Geophysical Research Letters, 43(5), 2149-2157.
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Journal Title:Geophysical Research Letters
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Description:The question of whether ocean coupling matters for the extratropical Northern Hemisphere atmospheric response to projected late 21st century Arctic sea ice loss is addressed using a series of experiments with Community Climate System Model version 4 at 1 degrees spatial resolution under different configurations of the ocean model component: no interactive ocean, thermodynamic slab ocean, and full-depth (dynamic plus thermodynamic) ocean. Ocean-atmosphere coupling magnifies the response to Arctic sea ice loss but does not change its overall structure; however, a slab ocean is inadequate for inferring the role of oceanic feedbacks. The westerly winds along the poleward flank of the eddy-driven jet weaken in response to Arctic sea ice loss, accompanied by a smaller-magnitude strengthening on the equatorward side, with largest amplitudes in winter. Dynamical and thermodynamic oceanic feedbacks amplify this response by approximately 50%. Air temperature, precipitation, and sea level pressure responses also show sensitivity to the degree of ocean coupling.
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Source:Geophysical Research Letters, 43(5), 2149-2157.
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Document Type:
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Rights Information:CC BY
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Compliance:Submitted
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Main Document Checksum:urn:sha256:0eee8e09a3878029633fdc3e53b93e47bb29f60b5f8a11ddf462d8041b281dc9
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