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Please use this identifier to cite or link to this item:
http://hdl.handle.net/1956/628
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| Title: | A Possible Feedback Mechanism Involving the Arctic Freshwater, the Arctic Sea Ice, and the North Atlantic Drift |
| Authors: | Otterå, Odd Helge
Drange, Helge |
| Keywords: | Arctic Ocean
freshwater
seaice
North Atlantic Drift |
| Issue Date: | 15-Mar-2004 |
| Publisher: | Science Press |
| Citation: | http://www.iap.ac.cn/publ/aas/ |
| Series/Report no.: | Advances in Atmospheric Sciences;21( 5) |
| Abstract: | Model studies point to enhanced warming and to increased freshwater fluxes to high northern
latitudes in response to global warming. In order to address possible feedbacks in the ice-ocean system
in response to such changes, the combined e ect of increased freshwater input to the Arctic Ocean and
Arctic warming—the latter manifested as a gradual melting of the Arctic sea ice—is examined using a
3-D isopycnic coordinate ocean general circulation model. A suite of three idealized experiments is carried
out: one control integration, one integration with a doubling of the modern Arctic river runo , and a third
more extreme case, where the river runo is five times the modern value. In the two freshwater cases, the
sea ice thickness is reduced by 1.5–2 m in the central Arctic Ocean over a 50-year period. The modelled
ocean response is qualitatively the same for both perturbation experiments: freshwater propagates into
the Atlantic Ocean and the Nordic Seas, leading to an initial we... |
| URI: | http://hdl.handle.net/1956/628 |
| ISSN: | 0256-1530 |
| Appears in Collections: | Eprints by Nansen Environmental and Remote Sensing Center (NERSC)
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| ott04_AAS.pdf | 3329Kb | Adobe PDF | View/Open |
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