The observational influence of the North Atlantic SST tripole on the early spring atmospheric circulation
The observational influence of the North Atlantic SST tripole on the early spring atmospheric circulation
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北大西洋海温三极子对早春大气环流的观测影响
DOI：
10.1002/2016gl068099
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发表时间：
2016-03-28
影响因子：
5.2
通讯作者：
Wan, Jianghua
中科院分区：
文献类型：
--
作者：
Han, Zhe;Luo, Feifei;Wan, Jianghua
本研究通过观测调查了北大西洋海面温度（SST）三极子对早春（2月至4月）北大西洋涛动（NAO）类环流的强迫。对应早春的海温三极强迫，大气环流非常微弱且微不足道。然而，进一步分析表明，海温异常对类NAO环流的观测效果受到伴随的海冰异常的干扰。随着海冰异常的线性效应消除，早春时存在与北大西洋海温三极相关的等效正压 NAO 环流。
This study investigated the forcing of the North Atlantic sea surface temperature (SST) tripole on the North Atlantic Oscillation (NAO)-like circulation in early spring (February-April) in observations. Corresponding to an SST tripole forcing in early spring, the atmospheric circulation is very weak and insignificant. However, further analyses indicate that the observational effect of the SST anomalies on the NAO-like circulation is disturbed by the concomitant sea ice anomalies. With the linear effects of sea ice anomalies removed, there is an equivalent barotropic NAO-like circulation in early spring related to a North Atlantic SST tripole.