Simulation of the interannual variability of the wind-driven Arctic sea-ice cover during 1958-1998
作者： G. Arfeuille , L. A. Mysak , L. -B. Tremblay
DOI: 10.1007/PL00013732
关键词: Icelandic Low 、 Sea ice 、 Oceanography 、 Climatology 、 Arctic dipole anomaly 、 Arctic ice pack 、 Arctic geoengineering 、 Geology 、 Arctic sea ice decline 、 North Atlantic oscillation 、 Arctic oscillation
摘要: A thermodynamic-dynamic sea-ice model based on a granular material rheology developed by Tremblay and Mysak is used to study the interannual variability of Arctic cover during 41-year period 1958–98. Monthly wind stress forcing derived from National Centers for Environmental Prediction (NCEP) Reanalysis data produce year-to-year variations in circulation thickness. We focus analyzing volume Basin subsequent changes export into Greenland Sea via Fram Strait. The relative contributions Strait thickness velocity anomalies are first investigated, former shown be particularly important several large events. these events next linked prior Basin. origin evolution then related atmospheric patterns Arctic. Large generally preceded formed along East Siberian coast due anomalous winds which occur when High centered closer than usual this coastal area. When center relocates over Beaufort Icelandic Low extends far Basin, ice transported region Transpolar Drift Stream. Finally, link between North Atlantic Oscillation (NAO) index briefly discussed. overall results show that its must considered order fully understand through
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