Interconnection between the Indian and the East Asian summer monsoon: Spatial synchronization patterns of extreme rainfall events,International Journal of Climatology

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Interconnection between the Indian and the East Asian summer monsoon: Spatial synchronization patterns of extreme rainfall events
International Journal of Climatology ( IF 3.9 ) Pub Date : 2022-09-13 , DOI: 10.1002/joc.7861
Shraddha Gupta _{1,

2} , Zhen Su _{1,

3} , Niklas Boers _{1,

4,

5} , Jürgen Kurths _{1,

2} , Norbert Marwan _{1,

6} , Florian Pappenberger ₇

Affiliation

A deeper understanding of the intricate relationship between 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 southeastern China occurring in June, and a northern mode between the core ISM zone and northern China which peaks in July—and their associated large-scale atmospheric circulation patterns. Furthermore, we discover that certain phases of the Madden–Julian oscillation and the lower frequency mode of the boreal summer intraseasonal oscillation (BSISO) seem to favour the overall synchronization 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 connection.

更新日期：2022-09-13

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