The mechanism of growth of the low-frequency East Asia–Pacific teleconnection and the triggering role of tropical intraseasonal oscillation

Wang, Jiabao; Wen, Zhiping; Wu, Renguang; Guo, Yuanyuan; Chen, Zesheng

doi:10.1007/s00382-015-2815-7

Cited by 32 publications

(17 citation statements)

References 57 publications

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“…The Indian summer monsoon intraseasonal variability tends to be connected to a circumglobal teleconnection pattern in the Northern Hemisphere midlatitudes (Ding & Wang, ). This variability also plays a substantial role on the initiation of the East Asia‐Pacific pattern (Wang, Wen, et al, ), along with the convective systems over the South China Sea (Li et al, ), and affects the runoff formation of the Amudarya and Syrdarya rivers in central Asia (Schiemann et al, ).…”

Section: Observational and Modeling Perspectivesmentioning

confidence: 99%

“…THE SUBSEASONAL TO SEASONAL (S2S) TELECONNECTION SUB-PROJECT 902 PUBLICATIONS Reviews of Geophysics REVIEW ARTICLE Some of these climatic teleconnection patterns also exhibit variability on subseasonal time scales (Feldstein, 2003;Murakami, 1988;Wang, Wen, et al, 2016). Thus, in recent years there has been a greater appreciation of the importance of the two-way interactions between the tropics and the midlatitude and high latitude on intraseasonal time scales of 10 to 100 days.…”

Section: Stan Et Almentioning

confidence: 99%

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Review of Tropical‐Extratropical Teleconnections on Intraseasonal Time Scales

Stan

Straus

Frederiksen

et al. 2017

Reviews of Geophysics

249

214

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The interactions and teleconnections between the tropical and midlatitude regions on intraseasonal time scales are an important modulator of tropical and extratropical circulation anomalies and their associated weather patterns. These interactions arise due to the impact of the tropics on the extratropics, the impact of the midlatitudes on the tropics, and two‐way interactions between the regions. Observational evidence, as well as theoretical studies with models of complexity ranging from the linear barotropic framework to intricate Earth system models, suggest the involvement of a myriad of processes and mechanisms in generating and maintaining these interconnections. At this stage, our understanding of these teleconnections is primarily a collection of concepts; a comprehensive theoretical framework has yet to be established. These intraseasonal teleconnections are increasingly recognized as an untapped source of potential subseasonal predictability. However, the complexity and diversity of mechanisms associated with these teleconnections, along with the lack of a conceptual framework to relate them, prevent this potential predictability from being translated into realized forecast skill. This review synthesizes our progress in understanding the observed characteristics of intraseasonal tropical‐extratropical interactions and their associated mechanisms, identifies the significant gaps in this understanding, and recommends new research endeavors to address the remaining challenges.

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Section: Observational and Modeling Perspectivesmentioning

confidence: 99%

Section: Stan Et Almentioning

confidence: 99%

Review of Tropical‐Extratropical Teleconnections on Intraseasonal Time Scales

Stan

Straus

Frederiksen

et al. 2017

Reviews of Geophysics

249

214

View full text Add to dashboard Cite

show abstract

“…The MJO‐midlatitude teleconnection has been analyzed widely from the observational/reanalysis data, modeling, and forecasting perspectives. It has been reported that the MJO strongly modulates the midlatitude weather and climate systems such as blocking frequency (Henderson et al, ), extreme precipitation (Mundhenk et al, ), North Atlantic Oscillation (Cassou, ; Lin et al, ), East Asia‐Pacific (Wang et al, ), and Pacific/North American patterns (Mori & Watanabe, ). A detailed review on the tropical‐extratropical teleconnections on intraseasonal timescale is offered by Stan et al ().…”

Section: Introductionmentioning

confidence: 99%

Modulation of the MJO and North Pacific Storm Track Relationship by the QBO

et al. 2018

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This study demonstrates a possible impact of the quasi‐biennial oscillation (QBO) on the Madden‐Julian Oscillation (MJO)‐related North Pacific storm track (NPST) change during October–March for the period of 1979–2016. The NPST shows significant intraseasonal changes in response to the MJO. In general, when the MJO convection is located over the Indian Ocean (western to central Pacific), the NPST tends to shift poleward (southward). This MJO‐related NPST change has larger amplitude during the easterly phase of the QBO (EQBO) than during its westerly phase (WQBO). The spatial distribution of this NPST change also exhibits significant differences between the two QBO phases with a zonally elongated pattern during EQBO winters but separated into two centers during WQBO winters. Diagnoses of the dynamical processes associated with the NPST change indicate the dominant roles of the baroclinic energy conversion and downstream energy propagation. The analysis of intraseasonal flow change indicates a larger amplitude of the MJO‐related baroclinicity over the North Pacific. This is likely due to a stronger MJO and associated Rossby wave source in EQBO winters, which may give rise to the enhanced amplitude of the NPST change. On the other hand, different spatial distribution of the NPST change is likely a result of a direct impact of the QBO on the NPST. These results suggest that the QBO impact needs to be considered for better reproduction of the MJO‐NPST teleconnection in general circulation models, which may also benefit subseasonal prediction of extratropical storm activities.

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“…The knowledge of SST anomalies in the shelves is also useful for climate monitoring and prediction, since they respond to a multiple-scale organization of atmospheric circulation anomalies occurring over distant parts of the globe, commonly called teleconnections. Climate teleconnections can exhibit variability on intraseasonal (IS) time scales, which are those between 10 and 100 days (Feldstein, 2003;Murakami, 1981; Wang et al, 2016). Moreover, in recent years there has been a greater appreciation of the importance of the two-way interactions between the tropics and the mid-latitudes and high latitudes on IS time scales (Stan et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Relationship between sea surface temperature anomalies in the Southwestern Atlantic Continental Shelf and atmospheric variability on intraseasonal timescales

et al. 2021

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The intraseasonal (IS) variability of the sea surface temperature (SST) in the Southwestern Atlantic Northern Argentinean Continental Shelf (SWACS NACS, 45-33°S -70-50°W), and its relationship with that in the atmosphere, was studied for the austral warm season. SST satellite data (11-km resolution NOAA CoastWatch Program) and data of different atmospheric variables (Reanalysis1 NCEP/NCAR and ERA-Interim) were used. Data were ltered using a 10-90day lter to isolate the IS variability. A Principal Component analysis was applied then to the ltered SST anomalies (SSTA) and the activity of the leading modes was described through the corresponding temporal series. The rst three modes are signi cant. EOF1 (25.7% of variance) exhibits SSTA of opposite sign to the north/south of 42°S. EOF2 (9.0%) and EOF3 (5.1%) are related with centers of SSTA of opposite sign located off the Uruguayan coast and in the middle shelf. Composites of SSTA and of key atmospheric variables were made considering the days in which the main modes were active. They show that the SSTA described by the three modes are associated with distinctive regional sea level pressure anomalies that, in turn, seem to be related to atmospheric Rossby wave trains extending from the Australia area towards South America. The corresponding atmospheric wave sources vary depending on the mode. These results show, therefore, that the SSTA in the SWACS NACS exhibit signi cant IS variability that is, in part, locally and remotely in uenced by atmospheric anomalies oscillating on similar timescales. These ocean-atmosphere teleconnections could help to improve ocean predictability at those timescales in the future.

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The mechanism of growth of the low-frequency East Asia–Pacific teleconnection and the triggering role of tropical intraseasonal oscillation

Cited by 32 publications

References 57 publications

Review of Tropical‐Extratropical Teleconnections on Intraseasonal Time Scales

Review of Tropical‐Extratropical Teleconnections on Intraseasonal Time Scales

Modulation of the MJO and North Pacific Storm Track Relationship by the QBO

Relationship between sea surface temperature anomalies in the Southwestern Atlantic Continental Shelf and atmospheric variability on intraseasonal timescales

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