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Journal Article

Interconnection between the Indian and the East Asian Summer Monsoon: spatial synchronization patterns of extreme rainfall events

Authors
/persons/resource/shraddha.gupta

Gupta,  Shraddha
Potsdam Institute for Climate Impact Research;

/persons/resource/zhen.su

Su,  Zhen
Potsdam Institute for Climate Impact Research;

/persons/resource/Niklas.Boers

Boers,  Niklas
Potsdam Institute for Climate Impact Research;

/persons/resource/Juergen.Kurths

Kurths,  Jürgen
Potsdam Institute for Climate Impact Research;

/persons/resource/Marwan

Marwan,  Norbert
Potsdam Institute for Climate Impact Research;

Pappenberger,  Florian
External Organizations;

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Fulltext (public)

27388oa.pdf
(Publisher version), 8MB

Supplementary Material (public)
Citation

Gupta, S., Su, Z., Boers, N., Kurths, J., Marwan, N., Pappenberger, F. (2023): Interconnection between the Indian and the East Asian Summer Monsoon: spatial synchronization patterns of extreme rainfall events. - International Journal of Climatology, 43, 2, 1034-1049.
https://doi.org/10.1002/joc.7861


Cite as: https://publications.pik-potsdam.de/pubman/item/item_27388
Abstract
A deeper understanding of the intricate relationship be- tween the two components of the Asian Summer Monsoon (ASM) – the Indian Summer Monsoon (ISM) and the East Asian Summer Monsoon (EASM) – is crucial to improve the subseasonal forecasting of extreme precipitation events. Using an innovative complex network-based approach, we identify two dominant synchronization pathways between ISM and EASM – a southern mode between the Arabian Sea and south-eastern China occurring in June, and a north- ern mode between the core ISM zone and northern China which peaks in July – and their associated large-scale at- mospheric circulation patterns. Furthermore, we discover that certain phases of the Madden-Julian oscillation and the lower frequency mode of the boreal summer intrasea- sonal oscillation (BSISO) seem to favour the overall synchro- nization of extreme rainfall events between ISM and EASM while the higher frequency mode of the BSISO is likely to support the shifting between the modes of ISM-EASM con- nection.