Decadal climate oscillations in the Arctic: A new feedback loop for atmosphere-ice-ocean interactions

被引:132
作者
Mysak, LA
Venegas, SA
机构
[1] McGill Univ, Ctr Climate & Global Change Res, Montreal, PQ H3A 2K6, Canada
[2] McGill Univ, Dept Atmospher & Ocean Sci, Montreal, PQ H3A 2K6, Canada
关键词
D O I
10.1029/98GL02782
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
A combined complex empirical orthogonal function analysis of 40 years of annual sea ice concentration (SIC) and winter sea level pressure (SLP) data reveals the existence of an approximately 10-year climate cycle in the Arctic and subarctic. The cycle is characterized by a clockwise propagating signal in the SIC anomalies and a standing oscillation in the SLP anomalies, the latter being linked to a fluctuation between the two phases of the North Atlantic Oscillation. To describe the formation and evolution of the SIC and SLP anomalies associated with the cycle, a simple feedback loop is proposed.
引用
收藏
页码:3607 / 3610
页数:4
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