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Possible Links between Arctic Sea Ice Loss Events and Cold Eurasian Anomalies in Winter
Journal of Meteorological Research ( IF 3.2 ) Pub Date : 2021-01-07 , DOI: 10.1007/s13351-020-0052-4
Wenqin Zhuo , Zhina Jiang

Recently, there have been two competing perspectives on the links of rapid sea ice retreat over the Barents-Kara Seas (BKS) and in midlatitude severe cold winters over Eurasia. By using the daily ECMWF reanalysis (ERA)-Interim dataset during 1979–2016, we reconcile two contrasting viewpoints, namely, if an upward turbulent heat flux appears and maintains several days after the rapid sea ice loss over the BKS in winter, a dipole structure which consists of a primary positive center of action around the Barents Sea with the other opposite-sign center of action over Eurasian continent is easily amplified, and consequently a cold anomaly over Eurasia will occur, but not vice versa. Our work casts light on the links between the Arctic sea ice loss and Eurasian cold winter anomalies by revealing the different responses of the surface turbulent heat flux (STHF) after rapid sea ice retreat on a daily basis.



中文翻译:

北极海冰损失事件与冬季欧亚冷异常之间的可能联系

最近,在巴伦支-卡拉海(BKS)和中纬度欧亚大陆严寒冬季的快速退缩之间存在两种相互竞争的观点。通过使用1979-2016年期间的每日ECMWF重新分析(ERA)-临时数据集,我们调和了两种截然相反的观点,即,如果冬季BKS海冰迅速流失后,出现了向上的湍流热通量并保持了几天,则偶极子由巴伦支海周围主要的正作用中心和欧亚大陆上另一个相反的作用中心组成的结构很容易被放大,因此欧亚大陆上将发生冷异常,反之则不然。

更新日期:2021-01-07
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