Sea ice transport: A highly variable link between Arctic and North Atlantic
Sea ice transport: A highly variable link between Arctic and North Atlantic
复制标题
海冰运输：北极和北大西洋之间高度可变的联系
DOI：
--
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
P. Lemke
中科院分区：
文献类型：
--
作者：
M. Hilmer;M. Harder;P. Lemke
利用NCEP/NCAR再分析项目获得的40年(1958-1997年)大气强迫场，用优化的动力-热力学海冰模式研究了进入东北大西洋的海冰体积通量的变化。模拟的北极海冰出口表现出相当大的年际到年代际变化，主要是对格陵兰以及巴伦支海和喀拉海海平面气压异常的线性反应。我们的模型结果表明，1968年的冰出口异常被认为是导致北大西洋北部所谓的“大盐度异常”的原因，这种异常并不是独一无二的，而是作为北极气候系统可变性的一部分而频繁发生的事件。
The variability of the ice volume flux into the northeast Atlantic is investigated with an optimized dynamic‐thermodynamic sea ice model using 40 years (1958–1997) of atmospheric forcing fields derived from the NCEP/NCAR reanalysis project. The simulated sea ice export from the Arctic exhibits considerable interannual to decadal variability and is primarily a linear response to sea level pressure anomalies over Greenland and over the Barents and Kara Seas. Our model results suggest that ice export anomalies such as in 1968 which supposedly caused the so‐called “Great Salinity Anomaly” in the northern North Atlantic are not unique but rather frequent events as part of the variability of the Arctic climate system.