Decadal modulation of the ENSO–East Asian winter monsoon relationship by the Atlantic Multidecadal Oscillation

Geng, Xin; Zhang, Wenjun; Stuecker, Malte F.; Liu, Peng; Jin, Fei‐Fei; Tan, Guirong

doi:10.1007/s00382-016-3465-0

Cited by 58 publications

(50 citation statements)

References 76 publications

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“…This AMO phase dependence of the La Niña‐EAWM connection (Figure b) is consistent with the AMO phase dependence in the correlation between Niño3.4 index and the EAWMI (Figure c). These results are consistent with our recent study proposing a nonlinear decadal modulation of the ENSO‐EAWM relationship by the AMO (Geng et al, ). These observational results suggest that the AMO seems to play an important role in the nonstationarity of the ENSO‐EAWM relationship.…”

Section: Application To the Nonstationary Enso‐eawm Relationshipsupporting

confidence: 94%

“…Recent observational analyses, however, suggest that this ENSO‐EAWM relationship seems to vary over time and exhibits pronounced multidecadal fluctuations (e.g., He & Wang, ; Zhou et al, ). The waxing and waning of the statistical ENSO‐EAWM relationship is usually explored based on running correlation analysis and is argued to be associated with changes in slow background forcings, ranging from the modulation effect by solar activity (Zhou et al, ), the Pacific Decadal Oscillation (PDO) (Wang et al, ), the Atlantic Multidecadal Oscillation (AMO) (Geng et al, ), and both the PDO and AMO (He & Wang, ; Kim et al, ). At present, the causes of the decadal variation, or apparent nonstationarity, of the ENSO‐EAWM relationship remain a subject of active debate.…”

Section: Introductionmentioning

confidence: 99%

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A New Method for Interpreting Nonstationary Running Correlations and Its Application to the ENSO‐EAWM Relationship

Geng

Zhang

Jin

et al. 2018

Geophysical Research Letters

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We here propose a new statistical method to interpret nonstationary running correlations by decomposing them into a stationary part and a first‐order Taylor expansion approximation for the nonstationary part. Then, this method is applied to investigate the nonstationary behavior of the El Niño–Southern Oscillation (ENSO)‐East Asian winter monsoon (EAWM) relationship, which exhibits prominent multidecadal variations. It is demonstrated that the first‐order approximation of the nonstationary part can be expressed to a large extent by the impact of the nonlinear interaction between the Atlantic Multidecadal Oscillation (AMO) and ENSO (AMO*Niño3.4) on the EAWM. Therefore, the nonstationarity in the ENSO‐EAWM relationship comes predominantly from the impact of an AMO modulation on the ENSO‐EAWM teleconnection via this key nonlinear interaction. This general method can be applied to investigate nonstationary relationships that are often observed between various different climate phenomena.

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Section: Application To the Nonstationary Enso‐eawm Relationshipsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

A New Method for Interpreting Nonstationary Running Correlations and Its Application to the ENSO‐EAWM Relationship

Geng

Zhang

Jin

et al. 2018

Geophysical Research Letters

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“…Wang and He () had pointed out that the EAWM–ENSO relationship is weakened in the mid‐1970s and this weakening was induced by the decadal weakening of the EAWM and the inter‐decadal variations of SST anomalies related to ENSO. The Pacific Decadal Oscillation (PDO) and Atlantic Multi‐decadal Oscillation (AMO) have modulation effects on the variations of atmosphere and their relationship with ENSO (Wang et al, ; Yoon and Yeh, ; He and Wang, ; Geng et al, ; Kim et al, ). During the positive phase of PDO (or negative phase of AMO), the correlation between EAWM and ENSO is not robust.…”

Section: Introductionmentioning

confidence: 99%

“…During the positive phase of PDO (or negative phase of AMO), the correlation between EAWM and ENSO is not robust. During the negative phase of PDO (or positive phase of AMO), ENSO could exert strong impacts on the EAWM (Wang et al, ; Geng et al, ; Kim et al, ). Moreover, Kim et al .…”

Section: Introductionmentioning

confidence: 99%

The northern and southern modes of East Asian winter monsoon and their relationships with El Niño‐Southern Oscillation

Chen

et al. 2018

Intl Journal of Climatology

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The characteristics of the northern and southern modes of the East Asian winter monsoon (EAWM) and their relationships with El Niño‐Southern Oscillation (ENSO) are further investigated in this paper using reanalysis data. The results demonstrate that the northern mode shows strong inter‐decadal variations, whereas the southern mode is marked by noticeable inter‐annual variations. The west–east pressure gradient plays a leading role in influencing northern mode, and both the west–east and north–south pressure gradients have significant impacts on the southern mode. The two modes are closely related, but their relationship shows inter‐decadal variations. The relationship between the southern mode and ENSO is significant and stable, but the relationship between the northern mode and ENSO is unstable and shows obvious inter‐decadal variations. The relationship between the northern mode and ENSO is significant before the late 1960s and after late 1990s, but it is not significant during the period between the late 1960s and late 1990s. ENSO influences the activity of northern mode mainly by changing the west–east pressure gradient. During the periods of a weak relationship between northern mode and ENSO, the variations in west–east pressure gradient may be dominated by the climate systems at mid–high latitudes, and the effects of ENSO are confined or offset. The inter‐decadal variations in the relationship between northern mode and ENSO may be modulated by the Pacific Decadal Oscillation (PDO) and Atlantic Multi‐decadal Oscillation (AMO), but their roles and importance have varied over time. The relationship between EAWM and ENSO and its inter‐decadal variations vary with the EAWM index, which is induced by the differences between the northern and southern modes. When the EAWM index is more closely correlated with the southern (northern) mode, its relationship with ENSO is (not) significant and stable (unstable).

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“…These climate changes range from decadal to centennial and millennial variations, and have been well documented through historical and proxy records, particularly annual growth rings in trees, cave stalagmites, corals, cores of lake and deep-sea sediments and ice cores (Mc-Manus et al, 1994;Jones et al, 2009;Esper et al, 2002). Interannual and decadal climate oscillations include El Niño-Southern Oscillation, the North Atlantic Oscillation, the Pacific Decadal Oscillation or the Atlantic Multidecadal Oscillation (Henley et al, 2015;Geng et al, 2017;Kayano et al, 2019). They have also been associated to the collapse of the Maya civilization in Mesoamerica between the 8th and 9th centuries, suggesting that intense droughts may have led to social stresses (Hodell et al, 1995;Haug et al, 2003;Douglas et al, 2015;Beach et al, 2016).…”

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confidence: 99%

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2020

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After a collaborative and uninterrupted work, the UPS has continued to improve one more year as a Research University, and has gone from the position 6,611 in the world and 13 in Ecuador (Webometrics, 2013) to the position 2627 (Webometrics, 2020) worldwide, it is the 170 on the continent and 7 in Ecuador. The continuous improvement of all teams and the strategic vision have made progress in the World Ranking, allowing to go to 3984 positions in 7 years and 366 new positions compared to 2019. Within this global strategy of improvement of the UPS as a Research University, LA GRANJA, belonging to the area of Life Sciences, was the first university publication of Ecuador to be included in SCOPUS, Elsevier publishing house and indexed in the Emerging Source Citation Index of the Web of Science (WOS). This edition presents articles by authors from 5 countries and 16 Universities and Research Centers. We started this number 31 with the topic of weather monitoring, in an effort between the Sciences Department of Environmental Systems of Switzerland and Universidad de Cuenca, led by Dr. Ryan Padrón and his excellent team. In addition, researchers from Universidad de las Fuerzas Armadas, led by Teófilos Toulkeridis, analyze the problem of perceptions in the important and current topic of Climate Change.

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Decadal modulation of the ENSO–East Asian winter monsoon relationship by the Atlantic Multidecadal Oscillation

Cited by 58 publications

References 76 publications

A New Method for Interpreting Nonstationary Running Correlations and Its Application to the ENSO‐EAWM Relationship

A New Method for Interpreting Nonstationary Running Correlations and Its Application to the ENSO‐EAWM Relationship

The northern and southern modes of East Asian winter monsoon and their relationships with El Niño‐Southern Oscillation

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