Asymmetrical synchronization of extreme rainfall events in southwest China
Panjie Qiao, Zhiqiang Gong, Wenqi Liu, Yongwen Zhang, Guolin Feng
Based on the complex network method, this study reveals the temporal and spatial characteristics of the synchronization of extreme rainfall events in southwest China (SWC) during the main rainfall season (May–September). Our results show the significant synchronization pattern of extreme rainfall events in SWC, which is closely associated with the convergence of warm-wet air and cold-dry air and the corresponding occurrence of extreme rainfall in SWC. The network divergence indicates a dominated direction of the net influence of extreme rainfall from the Sichuan Basin to the Yunnan–Guizhou Plateau, implying the extreme rainfall synchronization moving from north to south in SWC is more frequent than the opposite direction. The development of the low vortex and the north wind system usually shows a movement from north to south, resulting in the evolution of extreme rainfall events more tend to present a southward movement. The low-reinforced latitude cyclonic circulation leads to the strengthened transportation of water vapour from the tropical area to the north and converges with the anticyclonic circulation in the mid-latitudes to form the movement of heavy rainfall events from the Yunnan–Guizhou Plateau to the Sichuan Basin. Therefore, the synchronization direction of extreme rainfall events in SWC has obvious asymmetry spatial feature due to the more frequent and stronger circulation system moving from north to south than the opposite.
circulation system
complex network
event synchronization
extreme rainfall
10.1002/joc.7569
Dive into the research topics of 'Asymmetrical synchronization of extreme rainfall events in southwest China'. Together they form a unique fingerprint.
rainfall Earth & Environmental Sciences 100%
plateau Earth & Environmental Sciences 26%
air Earth & Environmental Sciences 19%
basin Earth & Environmental Sciences 17%
asymmetry Earth & Environmental Sciences 16%
divergence Earth & Environmental Sciences 15%
vortex Earth & Environmental Sciences 15%
water vapor Earth & Environmental Sciences 14%
Qiao, P., Gong, Z., Liu, W., Zhang, Y., & Feng, G. (2022). Asymmetrical synchronization of extreme rainfall events in southwest China. International Journal of Climatology, 42(11), 5935-5948. https://doi.org/10.1002/joc.7569
Qiao, Panjie ; Gong, Zhiqiang ; Liu, Wenqi et al. / Asymmetrical synchronization of extreme rainfall events in southwest China. In: International Journal of Climatology. 2022 ; Vol. 42, No. 11. pp. 5935-5948.
@article{3e76b69fadb14601aca54e3d848f56c1,
title = "Asymmetrical synchronization of extreme rainfall events in southwest China",
abstract = "Based on the complex network method, this study reveals the temporal and spatial characteristics of the synchronization of extreme rainfall events in southwest China (SWC) during the main rainfall season (May–September). Our results show the significant synchronization pattern of extreme rainfall events in SWC, which is closely associated with the convergence of warm-wet air and cold-dry air and the corresponding occurrence of extreme rainfall in SWC. The network divergence indicates a dominated direction of the net influence of extreme rainfall from the Sichuan Basin to the Yunnan–Guizhou Plateau, implying the extreme rainfall synchronization moving from north to south in SWC is more frequent than the opposite direction. The development of the low vortex and the north wind system usually shows a movement from north to south, resulting in the evolution of extreme rainfall events more tend to present a southward movement. The low-reinforced latitude cyclonic circulation leads to the strengthened transportation of water vapour from the tropical area to the north and converges with the anticyclonic circulation in the mid-latitudes to form the movement of heavy rainfall events from the Yunnan–Guizhou Plateau to the Sichuan Basin. Therefore, the synchronization direction of extreme rainfall events in SWC has obvious asymmetry spatial feature due to the more frequent and stronger circulation system moving from north to south than the opposite.",
keywords = "circulation system, complex network, event synchronization, extreme rainfall, southwest China",
author = "Panjie Qiao and Zhiqiang Gong and Wenqi Liu and Yongwen Zhang and Guolin Feng",
note = "Funding Information: This study was supported by the National Key Research and Development Program of China (2018YFA0606301) and the National Natural Science Foundation of China Project (42075057, 41875100, and 61573173). Funding Information: National Natural Science Foundation of China, Grant/Award Numbers: 41875100, 42075057, 61573173; The National Key Research and Development Program of China, Grant/Award Number: 2018YFA0606301 Funding information Publisher Copyright: {\textcopyright} 2022 Royal Meteorological Society.",
doi = "10.1002/joc.7569",
journal = "International Journal of Climatology",
Qiao, P, Gong, Z, Liu, W, Zhang, Y & Feng, G 2022, 'Asymmetrical synchronization of extreme rainfall events in southwest China', International Journal of Climatology, vol. 42, no. 11, pp. 5935-5948. https://doi.org/10.1002/joc.7569
Asymmetrical synchronization of extreme rainfall events in southwest China. / Qiao, Panjie; Gong, Zhiqiang; Liu, Wenqi et al.
In: International Journal of Climatology, Vol. 42, No. 11, 01.09.2022, p. 5935-5948.
T1 - Asymmetrical synchronization of extreme rainfall events in southwest China
AU - Qiao, Panjie
AU - Gong, Zhiqiang
AU - Liu, Wenqi
AU - Zhang, Yongwen
AU - Feng, Guolin
N1 - Funding Information: This study was supported by the National Key Research and Development Program of China (2018YFA0606301) and the National Natural Science Foundation of China Project (42075057, 41875100, and 61573173). Funding Information: National Natural Science Foundation of China, Grant/Award Numbers: 41875100, 42075057, 61573173; The National Key Research and Development Program of China, Grant/Award Number: 2018YFA0606301 Funding information Publisher Copyright: © 2022 Royal Meteorological Society.
N2 - Based on the complex network method, this study reveals the temporal and spatial characteristics of the synchronization of extreme rainfall events in southwest China (SWC) during the main rainfall season (May–September). Our results show the significant synchronization pattern of extreme rainfall events in SWC, which is closely associated with the convergence of warm-wet air and cold-dry air and the corresponding occurrence of extreme rainfall in SWC. The network divergence indicates a dominated direction of the net influence of extreme rainfall from the Sichuan Basin to the Yunnan–Guizhou Plateau, implying the extreme rainfall synchronization moving from north to south in SWC is more frequent than the opposite direction. The development of the low vortex and the north wind system usually shows a movement from north to south, resulting in the evolution of extreme rainfall events more tend to present a southward movement. The low-reinforced latitude cyclonic circulation leads to the strengthened transportation of water vapour from the tropical area to the north and converges with the anticyclonic circulation in the mid-latitudes to form the movement of heavy rainfall events from the Yunnan–Guizhou Plateau to the Sichuan Basin. Therefore, the synchronization direction of extreme rainfall events in SWC has obvious asymmetry spatial feature due to the more frequent and stronger circulation system moving from north to south than the opposite.
AB - Based on the complex network method, this study reveals the temporal and spatial characteristics of the synchronization of extreme rainfall events in southwest China (SWC) during the main rainfall season (May–September). Our results show the significant synchronization pattern of extreme rainfall events in SWC, which is closely associated with the convergence of warm-wet air and cold-dry air and the corresponding occurrence of extreme rainfall in SWC. The network divergence indicates a dominated direction of the net influence of extreme rainfall from the Sichuan Basin to the Yunnan–Guizhou Plateau, implying the extreme rainfall synchronization moving from north to south in SWC is more frequent than the opposite direction. The development of the low vortex and the north wind system usually shows a movement from north to south, resulting in the evolution of extreme rainfall events more tend to present a southward movement. The low-reinforced latitude cyclonic circulation leads to the strengthened transportation of water vapour from the tropical area to the north and converges with the anticyclonic circulation in the mid-latitudes to form the movement of heavy rainfall events from the Yunnan–Guizhou Plateau to the Sichuan Basin. Therefore, the synchronization direction of extreme rainfall events in SWC has obvious asymmetry spatial feature due to the more frequent and stronger circulation system moving from north to south than the opposite.
KW - circulation system
KW - complex network
KW - event synchronization
KW - extreme rainfall
KW - southwest China
U2 - 10.1002/joc.7569
DO - 10.1002/joc.7569
JO - International Journal of Climatology
JF - International Journal of Climatology
Qiao P, Gong Z, Liu W, Zhang Y, Feng G. Asymmetrical synchronization of extreme rainfall events in southwest China. International Journal of Climatology. 2022 Sep 1;42(11):5935-5948. doi: 10.1002/joc.7569