Three Eurasian teleconnection patterns: spatial structures, temporal variability, and associated winter climate anomalies

Liu, Yuyun; Wang, Lin; Zhou, Wen; Chen, Wen

doi:10.1007/s00382-014-2163-z

Cited by 211 publications

(230 citation statements)

References 46 publications

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“…Jhun and Lee (2004) also noted the concurrent variation of EAWM intensity and the strength of the East Asian jet in the upper troposphere. In remote forcing, the Eurasian pattern studied by Wallace and Gutzler (1981) comprises a wave train across the Eurasian continent that links the East Asian climate with remote regions through stationary eddy propagation (Bueh and Nakamura 2007;Sung et al 2009;Liu et al 2014). Zhou et al (2009) noted that atmospheric blocking over the Ural Mountains was responsible for the persistent low temperatures and snowstorm over southeast China in January 2008.…”

Section: Introductionmentioning

confidence: 98%

Variation of circulation and East Asian climate associated with anomalous strength and displacement of the East Asian trough

Leung

Zhou

2015

Clim Dyn

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Variations of the East Asian trough (EAT) and its relationship with the East Asian climate are documented in this study. The variations investigated include the trough's strength and its meridional and zonal displacements. Anomalous cold (warmth) in Southeast Asia is concurrent with the southward (northward) displacement of the EAT. The southward displacement of the EAT is likely associated with an anomalous strong Siberian high and Aleutian low, which manipulate anomalous northerly wind between them. On the other hand, the temperature in northeast Asia is influenced by both the strength and the zonal displacement of the trough. These properties of the EAT are closely linked to temperatures in the northern and southern portions of East Asia. The relation between variations of the EAT and the East Asian winter monsoon is also examined. In addition, the relation between the EAT and transient eddies is studied. Anomalous transient eddies concurrent with variations of the EAT are contributed by a localized anomalous meridional gradient due to the variation of stationary eddies and zonal symmetric structure. Variations in the polar vortex are significant for variations in the strength of the EAT. To investigate the role of eddies in the anomalous evolution of the EAT, we also study stationary and transient eddy forcing on the evolution of anomalous EAT and zonal symmetric structures using wave activity flux and extended E-vectors.

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Section: Introductionmentioning

confidence: 98%

Variation of circulation and East Asian climate associated with anomalous strength and displacement of the East Asian trough

Leung

Zhou

2015

Clim Dyn

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“…Most published research relating to teleconnection patterns has focused on analyzing and distinguishing the temporal characteristics and spatial structures at mid-high latitudes, primarily in winter (Wallace and Gutzler 1981;Esbensen 1984;Barnston and Livezey 1987;Panagiotopoulos et al 2002;Liu et al 2014). In this study, we investigated the correlations between certain teleconnection patterns and some atmospheric circulation components from the North Polar Region to the tropics of Eurasia and the Pacific in all seasons.…”

Section: Discussionmentioning

confidence: 99%

“…Most studies have focused on the mid-high latitudes (Li et al 2008;Sung et al 2009;Qian and Liang 2012;Takaya and Nakamura 2013;Liu et al 2014). Here, we explored the possible impacts of our selected teleconnection patterns on the circulation components in the lower latitudes.…”

Section: Impacts On Subtropical Circulationsmentioning

confidence: 99%

“…The EU pattern is focused on sea level pressure (SLP) in winter. This EU pattern is regarded as conventional EU pattern (hereafter referred to as C-EU pattern) in the literature of Liu et al (2014). In its positive phase, the Siberian High is strong and it expands westward, whereas when the EU pattern exhibits negative polarity, a prevailing zonal circulation extends from the Himalayas to the northern polar region over Eurasia (Smoliak 2009).…”

Section: Introductionmentioning

confidence: 99%

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Impacts of four northern-hemisphere teleconnection patterns on atmospheric circulations over Eurasia and the Pacific

Gao

Paek

2016

Theor Appl Climatol

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The impacts of four teleconnection patterns on atmospheric circulation components over Eurasia and the Pacific region, from low to high latitudes in the Northern Hemisphere (NH), were investigated comprehensively in this study. The patterns, as identified by the Climate Prediction Center (USA), were the East Atlantic (EA), East Atlantic/ Western Russia (EAWR), Polar/Eurasia (POLEUR), and Scandinavian (SCAND) teleconnections. Results indicate that the EA pattern is closely related to the intensity of the subtropical high over different sectors of the NH in all seasons, especially boreal winter. The wave train associated with this pattern serves as an atmospheric bridge that transfers Atlantic influence into the low-latitude region of the Pacific. In addition, the amplitudes of the EAWR, SCAND, and POLEUR patterns were found to have considerable control on the "Vangengeim-Girs" circulation that forms over the AtlanticEurasian region in winter or spring. The EA and EAWR mainly affect the westerlies in winter and spring and the POLEUR and SCAND, respectively, in summer and winter. Strong westerlies confine the extension of the North Polar vortex, which generally results in a small weak vortex and a shallow East Asian trough located in a position further east than normal. Furthermore, the North Polar vortex presents significant connections with the patterns during winter and summer. Analyses in this work suggest that the teleconnection patterns in summer could be driven, at least partly, by the Atlantic Multidecadal Oscillation, which to some degree might transmit the influence of the Atlantic Ocean to Eurasia and the Pacific region.

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“…Many studies have explored the impact of the EAWM variability, focusing on the AO and/or ENSO. On the other hand, several studies have argued for a decreasing role of the ENSO [13] and an increasing role of other large-scale patterns, originating in the Northern Hemispheric mid-latitudes or the Arctic, in influencing East Asian winter temperatures [14][15][16]. Recent studies have suggested the combined effects of the AO and Western Pacific (WP) pattern [17] and the AO and Eurasian teleconnection (EU) [18] on East Asian winter temperatures and monsoons.…”

Section: Introductionmentioning

confidence: 99%

Prediction Skill for the East Asian Winter Monsoon Based on APCC Multi-Models

Shin

Moon

2018

Atmosphere

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Abstract:The prediction skill for the East Asian winter monsoon (EAWM) has been analyzed, using the observations and different climate models that participate in the APEC Climate Center (APCC) multi-model ensemble (MME) seasonal forecast. The authors first examined the characteristics of the existing EAWM indices to find a suitable index for the APCC seasonal forecast system. This examination revealed that the selected index shows reasonable prediction skill of EAWM intensity and well-represents the characteristics of wintertime temperature anomalies associated with the EAWM, especially for the extreme cold winters. Although most models capture the main characteristics of the seasonal mean circulation over East Asia reasonably well, they still suffer from difficulty in predicting the interannual variability (IAV) of the EAWM. Fortunately, the POAMA has reasonable skill in capturing the timing and strength of the EAWM IAV and reproduces the EAWM-related circulation anomalies well. The better performance of the POAMA may be attributed to the better skill in simulating the high-latitude forcing including the Siberian High (SH) and Artic Oscillation (AO) and the strong links of the ENSO to the EAWM, compared to other models.

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Three Eurasian teleconnection patterns: spatial structures, temporal variability, and associated winter climate anomalies

Cited by 211 publications

References 46 publications

Variation of circulation and East Asian climate associated with anomalous strength and displacement of the East Asian trough

Variation of circulation and East Asian climate associated with anomalous strength and displacement of the East Asian trough

Impacts of four northern-hemisphere teleconnection patterns on atmospheric circulations over Eurasia and the Pacific

Prediction Skill for the East Asian Winter Monsoon Based on APCC Multi-Models

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