Remote Impact of Typhoon In‐Fa on the Catastrophic Flood Over Henan, Inland of China in July 2021
Abstract It has been shown the catastrophic flood in Henan, inland of China in July 2021, was strongly influenced by Typhoon In‐Fa in the western North Pacific. However, the remote impact of Typhoon In‐Fa via the monsoonal flow has not yet been clearly addressed. Our results show the In‐Fa amplified...
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| Format: | Article |
| Language: | English |
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Wiley
2025-05-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2025GL115122 |
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| author | Zhiqi Yan Wanyi Sun Congwen Zhu Boqi Liu Yuejian Zhu Ning Jiang Yuhan Yan |
| author_facet | Zhiqi Yan Wanyi Sun Congwen Zhu Boqi Liu Yuejian Zhu Ning Jiang Yuhan Yan |
| author_sort | Zhiqi Yan |
| collection | DOAJ |
| description | Abstract It has been shown the catastrophic flood in Henan, inland of China in July 2021, was strongly influenced by Typhoon In‐Fa in the western North Pacific. However, the remote impact of Typhoon In‐Fa via the monsoonal flow has not yet been clearly addressed. Our results show the In‐Fa amplified the East Asian Summer Monsoon (EASM) flow through potential vorticity advection, strengthening a mid‐latitude anticyclone in the troposphere over Northeast Asia, steering northward track of In‐Fa via enhanced cyclonic vorticity in its north. The cross‐time scale interaction between In‐Fa and the EASM intensified easterly winds, facilitated long‐distance moisture transport, and resulted in this catastrophic flooding. These findings reveal the remote impact of typhoon via the dynamical interaction with EASM flow, which better explains the extremity of this flooding. |
| format | Article |
| id | doaj-art-d4bddb5c3e804a6fa9087523a1fb95f7 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-d4bddb5c3e804a6fa9087523a1fb95f72025-08-20T03:10:31ZengWileyGeophysical Research Letters0094-82761944-80072025-05-015210n/an/a10.1029/2025GL115122Remote Impact of Typhoon In‐Fa on the Catastrophic Flood Over Henan, Inland of China in July 2021Zhiqi Yan0Wanyi Sun1Congwen Zhu2Boqi Liu3Yuejian Zhu4Ning Jiang5Yuhan Yan6State Key Laboratory of Severe Weather Meteorological Science and Technology (LaSW) Chinese Academy of Meteorological Sciences (CAMS) Beijing ChinaState Key Laboratory of Severe Weather Meteorological Science and Technology (LaSW) Chinese Academy of Meteorological Sciences (CAMS) Beijing ChinaState Key Laboratory of Severe Weather Meteorological Science and Technology (LaSW) Chinese Academy of Meteorological Sciences (CAMS) Beijing ChinaState Key Laboratory of Severe Weather Meteorological Science and Technology (LaSW) Chinese Academy of Meteorological Sciences (CAMS) Beijing ChinaState Key Laboratory of Severe Weather Meteorological Science and Technology (LaSW) Earth System Modeling and Prediction Centre (CEMC) China Meteorological Administration Beijing ChinaState Key Laboratory of Severe Weather Meteorological Science and Technology (LaSW) Chinese Academy of Meteorological Sciences (CAMS) Beijing ChinaState Key Laboratory of Severe Weather Meteorological Science and Technology (LaSW) Chinese Academy of Meteorological Sciences (CAMS) Beijing ChinaAbstract It has been shown the catastrophic flood in Henan, inland of China in July 2021, was strongly influenced by Typhoon In‐Fa in the western North Pacific. However, the remote impact of Typhoon In‐Fa via the monsoonal flow has not yet been clearly addressed. Our results show the In‐Fa amplified the East Asian Summer Monsoon (EASM) flow through potential vorticity advection, strengthening a mid‐latitude anticyclone in the troposphere over Northeast Asia, steering northward track of In‐Fa via enhanced cyclonic vorticity in its north. The cross‐time scale interaction between In‐Fa and the EASM intensified easterly winds, facilitated long‐distance moisture transport, and resulted in this catastrophic flooding. These findings reveal the remote impact of typhoon via the dynamical interaction with EASM flow, which better explains the extremity of this flooding.https://doi.org/10.1029/2025GL115122remote impact of typhoon In‐FaEast Asian summer monsooncross‐timescale interactioncatastrophic flood in July 2021 |
| spellingShingle | Zhiqi Yan Wanyi Sun Congwen Zhu Boqi Liu Yuejian Zhu Ning Jiang Yuhan Yan Remote Impact of Typhoon In‐Fa on the Catastrophic Flood Over Henan, Inland of China in July 2021 Geophysical Research Letters remote impact of typhoon In‐Fa East Asian summer monsoon cross‐timescale interaction catastrophic flood in July 2021 |
| title | Remote Impact of Typhoon In‐Fa on the Catastrophic Flood Over Henan, Inland of China in July 2021 |
| title_full | Remote Impact of Typhoon In‐Fa on the Catastrophic Flood Over Henan, Inland of China in July 2021 |
| title_fullStr | Remote Impact of Typhoon In‐Fa on the Catastrophic Flood Over Henan, Inland of China in July 2021 |
| title_full_unstemmed | Remote Impact of Typhoon In‐Fa on the Catastrophic Flood Over Henan, Inland of China in July 2021 |
| title_short | Remote Impact of Typhoon In‐Fa on the Catastrophic Flood Over Henan, Inland of China in July 2021 |
| title_sort | remote impact of typhoon in fa on the catastrophic flood over henan inland of china in july 2021 |
| topic | remote impact of typhoon In‐Fa East Asian summer monsoon cross‐timescale interaction catastrophic flood in July 2021 |
| url | https://doi.org/10.1029/2025GL115122 |
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