Journal article

Impact of Ural Blocking on Winter Warm Arctic-Cold Eurasian Anomalies. Part I: Blocking-Induced Amplification

Dehai Luo, Yiqing Xiao, Yao Yao, Aiguo Dai, Ian Simmonds, Christian LE Franzke



In Part I of this study, the impact of Ural blocking (UB) on the warm Arctic-cold Eurasian (WACE) pattern associated with the winter (DJF) arctic sea ice loss during 1979-2013 is examined by dividing the arctic sea ice reduction region into two dominant subregions: The Barents and Kara Seas (BKS) and the North American high-latitude (NAH) region (Baffin and Hudson Bay, Davis Strait, and Labrador Sea). It is found that atmospheric response to arctic sea ice loss resembles a negative Arctic response oscillation with a dominant positive height anomaly over the Eurasian subarctic region. Regression analyses of the two subregions further show that the sea ice loss over the BKS corresponds to the ..

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Awarded by National Science Foundation of China

Awarded by U.S. National Science Foundation

Awarded by U.S. Department of Energy's Office of Science

Awarded by U.S. National Oceanic and Atmospheric Administration

Awarded by Australian Research Council

Awarded by Directorate For Geosciences

Funding Acknowledgements

The first three authors acknowledge the support from the National Science Foundation of China (Grants 41375067, 41430533, and 41505075). This study was motivated when the first author was a visiting scientist at the State University of New York at Albany during May 2015. A. Dai is supported by the U.S. National Science Foundation (Grant AGS-1353740), the U.S. Department of Energy's Office of Science (Award DE-SC0012602), and the U.S. National Oceanic and Atmospheric Administration (Award NA15OAR4310086). I. Simmonds was supported by Australian Research Council Grant DP 160101997. C. Franzke was supported by the German Research Foundation (DFG) through the cluster of excellence CliSAP. The authors thank three anonymous reviewers and Prof. Walsh, whose comments improved this paper.