Increased quasi stationarity and persistence of winter Ural blocking and Eurasian extreme cold events in response to Arctic warming. Part I: Insights from observational analyses

Part I of this study examines the relationship among winter cold anomalies over Eurasia, Ural blocking (UB), and the background conditions associated with Arctic warming over the Barents and Kara Seas (BKS) using reanalysis data. It is found that the intensity, persistence, and occurrence region of...

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Bibliographic Details
Published in:Journal of Climate
Other Authors: Yao, Yao (author), Luo, Dehai (author), Dai, Aiguo (author), Simmonds, Ian (author)
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Arctic
Online Access:https://doi.org/10.1175/JCLI-D-16-0261.1
Description
Summary:Part I of this study examines the relationship among winter cold anomalies over Eurasia, Ural blocking (UB), and the background conditions associated with Arctic warming over the Barents and Kara Seas (BKS) using reanalysis data. It is found that the intensity, persistence, and occurrence region of UB-related Eurasian cold anomalies depend strongly on the strength and vertical shear (VS) of the mean westerly wind (MWW) over mid-high-latitude Eurasia related to BKS warming.

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