Journal article

The winter midlatitude-Arctic interaction: effects of North Atlantic SST and high-latitude blocking on Arctic sea ice and Eurasian cooling

Binhe Luo, Lixin Wu, Dehai Luo, Aiguo Dai, Ian Simmonds

CLIMATE DYNAMICS | SPRINGER | Published : 2019

Abstract

In this paper, the effects of Eurasian circulation patterns such as high-latitude European blocking (HEB) and Ural blocking (UB) events on winter sea-ice concentration (SIC) in the Barents–Kara seas (BKS) and Eurasian cooling is examined to differentiate the different roles of HEB and UB in association with positive North Atlantic Oscillation (NAO + ) events. A particular focus is on the SIC variability resulting from the effect of sea surface temperature (SST) near the Gulf Stream Extension (GSE) region through to the position change of Eurasian blocking. It is found that the SST shows a dipole pattern with a positive (negative) anomaly to the south (north) of the GSE, while the high SST in..

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Grants

Awarded by Chinese Academy of Sciences Strategic Priority Research Program


Awarded by National Natural Science Foundation of China


Awarded by US National Science Foundation


Awarded by US Department of Energy's Office of Science


Awarded by US National Oceanic and Atmospheric Administration


Awarded by Australian Research Council


Funding Acknowledgements

The authors acknowledge the support from the Chinese Academy of Sciences Strategic Priority Research Program (Grant Number XDA19070403) and the National Natural Science Foundation of China (Grant Numbers 41430533). Dai acknowledges the funding support from the US National Science Foundation (Grant Number AGS-1353740), the US Department of Energy's Office of Science (Award No. DE-SC0012602), and the US National Oceanic and Atmospheric Administration (Award No. NA15OAR4310086). Simmonds was supported by Australian Research Council Grant DP160101997.