A teleconnection pattern in upper-level meridional wind over the North African and Eurasian continent in summer

Lu, Riyu; Oh, Jai-Ho; KIM, BAEK-JO

doi:10.1034/j.1600-0870.2002.00248.x

Cited by 165 publications

(89 citation statements)

References 13 publications

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“…7). The results obtained above that show that Asia's climate was modulated by a wave pattern is consistent with a growing body of evidence that highlights the importance of Rossby waves on this area (Lu et al 2002;Enomoto et al 2003;Enomoto 2004;Ding et al 2011;Kosaka et al 2011;Huang et al 2012;Wu et al 2016a, b;Lin et al 2016;Wang et al 2017). The associated pattern is known as "silk road" or CGT pattern, depending on the path of the wave.…”

Section: Impact Of the Observed Circumglobal Teleconnection Patternsupporting

confidence: 74%

A role of the Atlantic Ocean in predicting summer surface air temperature over North East Asia?

et al. 2017

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Section: Impact Of the Observed Circumglobal Teleconnection Patternsupporting

confidence: 74%

A role of the Atlantic Ocean in predicting summer surface air temperature over North East Asia?

et al. 2017

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“…Due to the normally dry condition over the eastern cold tongue region, the large negative SST anomalies can hardly further suppress convection and cause the weak rainfall response. to resemble that of SRP (or CGT) (Lu et al, 2002;Wu, 2002;Ding and Wang, 2005;Bothe et al, 2010;Gao et al, 2013). The SRP is characterized by the stationary Rossby waves along the Asian jet (Lu et al, 2002;Wu, 2002;Ding and Wang, 2005;Lin, 2014) that acts as a waveguide and confines the waves within it (Hoskins and Ambrizzi, 1993).…”

Section: Sst Anomaliesmentioning

confidence: 99%

“…Wu (2002) identified a dominant pattern for the interannual variation of upper-level winds over mid-latitude Asia in boreal summer: two anomalous anticyclones over the west Asia and mid-latitude East Asia and a cyclonic between the two large anticyclones. Lu et al (2002) found a similar teleconnection pattern, and it was named as the Silk Road pattern (SRP) later (Enomoto et al, 2003). It forms as a result of the propagation of quasi-stationary Rossby waves along the Asian jet and has a wavelength of about 60 ∘ in the zonal direction (Lu et al, 2002;Enomoto et al, 2003;Sato and Takahashi, 2003;Kosaka et al, 2009Kosaka et al, , 2012.…”

Section: Introductionmentioning

confidence: 96%

“…Lu et al (2002) found a similar teleconnection pattern, and it was named as the Silk Road pattern (SRP) later (Enomoto et al, 2003). It forms as a result of the propagation of quasi-stationary Rossby waves along the Asian jet and has a wavelength of about 60 ∘ in the zonal direction (Lu et al, 2002;Enomoto et al, 2003;Sato and Takahashi, 2003;Kosaka et al, 2009Kosaka et al, , 2012. SRP is viewed as a part of the circumglobal teleconnection (CGT) pattern that extends zonally through the whole hemisphere (Ding and Wang, 2005;Yasui and Watanabe, 2010;Chen and Huang, 2012;Lin, 2014) and can influence climate over a broad area, including precipitation and temperature over TP and East Asia (Liu and Yin, 2001;Wu, 2002;Bothe et al, 2010Bothe et al, , 2011Gao et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Interannual variation of precipitation over the Hengduan Mountains during rainy season

Dong

Huang

et al. 2017

Intl Journal of Climatology

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The present study investigates the interannual variability of precipitation over the Hengduan Mountains (HMs) during rainy season based on daily precipitation dataset of 151 meteorological stations. More HMs precipitation is associated with an anomalous lower level cyclonic circulation over the northern South China Sea (SCS) and the upper level Silk Road pattern (SRP)‐like geopotential height anomalies. Along the north flank of the anomalous cyclonic circulation, easterly wind anomalies weaken climatology winds and prevent further movement of southwest moisture transport, leading to the enhancement of moisture convergence over HMs. Diagnosis shows that anomalous vertical motions are owing to the advection of anomalous temperature by basic zonal winds. The anomalous lower level cyclonic circulation over the northern SCS is related to La Niña‐like sea surface cooling in the equatorial central and eastern Pacific. This cooling adjusts the Walker Circulation, causing positive precipitation anomalies near the SCS, which trigger the anomalous cyclonic circulation as a warm Rossby wave response. The distribution of upper level geopotential height anomalies over the mid‐latitude Asian land resembles the SRP. Due to its barotropic structure, the SRP leads to warm and cold anomalies over the central Asia and the central China, respectively. The advection of anomalous temperature gradient by mean westerlies leads to anomalous ascending motions and more precipitation over HMs.

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“…Stationary Rossby waves may respond strongly to orography, thermal sources and sinks. During boreal summer, stationary Rossby wave trains are induced by tropical and subtropical heat sources over the Atlantic (Lu et al, 2002), the Bay of Bengal (Joseph and Srinivasan, 1999) and the WNP (Kosaka and Nakamura, 2010). We will discuss the possible physical processes by which SST variations affect the teleconnection patterns in the following paragraphs.…”

Section: Role Of Teleconnection Patterns and Remote Influences Of Sstmentioning

confidence: 99%

Teleconnection patterns impacting on the summer consecutive extreme rainfall in Central‐Eastern China

Li²,

Zhai

et al. 2016

Intl Journal of Climatology

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Consecutive extreme rainfall (CER) events can cause enormous damage to human society and the environment in eastern China. This study analyses persistent atmospheric circulation patterns related to dominant CER modes over Central‐Eastern China. Results reveal that the two leading modes together explain 30% of the total CER variance. The circulation patterns related to the first CER mode manifest a barotropic Eurasian (EU) pattern teleconnection 4 days before the CER events occur in the southern Yangtze River. The second CER mode is associated with a negative Pacific‐Japan (PJ) teleconnection pattern, which persists for 5 days until the onset of CER events in the Yangtze River Valley. Furthermore, the stagnant double blocking highs around the Urals and the Sea of Okhotsk and the vapour transport from the western North Pacific (WNP) distinguish the persistent circulations of the second CER mode from the first mode. Therefore, the configuration of persistent circulation patterns is likely responsible for the occurrence of CER events. Further analysis suggests that the Rossby waves, in association with dipolar sea surface temperature (SST) anomalies in the northeastern Atlantic, propagate eastward towards East Asia, generating an EU‐like teleconnection 4 days prior to CER event onset. Furthermore, cold SST anomalies in the warm pool and warm SST anomalies in the tropical WNP‐South China Sea and the western Indian Ocean induce poleward‐propagating Rossby waves, creating a negative PJ teleconnection pattern up to 5 days prior to CER events. These results are supported by ray paths originating from base points of EU and PJ teleconnections.

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A teleconnection pattern in upper-level meridional wind over the North African and Eurasian continent in summer

Cited by 165 publications

References 13 publications

A role of the Atlantic Ocean in predicting summer surface air temperature over North East Asia?

A role of the Atlantic Ocean in predicting summer surface air temperature over North East Asia?

Interannual variation of precipitation over the Hengduan Mountains during rainy season

Teleconnection patterns impacting on the summer consecutive extreme rainfall in Central‐Eastern China

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