Impacts of moisture transport on extreme precipitation in the Central Plains Urban Agglomeration, China

Chen, Yufan1; Zhang, Shuyu1; Gong, Guoqing1; Chen, Penghan1; Gan, Thian Yew2; Chen, Deliang3; Liu, Junguo1,4,5

2024-11-01

10.1016/j.gloplacha.2024.104582

GLOBAL AND PLANETARY CHANGE   影响因子和分区

0921-8181

1872-6364

In recent decades, the Central Plains Urban Agglomeration of China (CPUA) has faced recurring extreme precipitation events (EPEs), leading to severe floods, endangering residents, and causing significant property damage. This study examines the spatiotemporal patterns of summer EPEs in the CPUA from 1961 to 2022. We used the Hybrid Single-Particle Lagrangian Integrated Trajectory model to trace the water vapor trajectories associated with these events, identifying atmospheric circulations linked to various moisture sources. Summer EPEs in the CPUA have become more frequent and intense. Urban regions typically experience stronger EPEs, while mountainous regions encounter more frequent but milder precipitation. The moisture contributing to these events comes from sources including Eurasia (9.94 %), the northern and southern Western North Pacific (48.39 %), and the Bay of Bengal and South China Sea (41.67 %). Notably, contributions from Eurasia and the northern Western North Pacific have increased, whereas those from the Bay of Bengal and the South China Sea have decreased. Events driven by Western North Pacific moisture have stronger impacts on urban areas, influenced by abnormal anticyclonic patterns and the development of the Huang-Huai cyclone, which triggers intense convective activity over the CPUA. The strengthening of the Western North Pacific subtropical high promotes the transport of warm air, which merges with colder inland air, leading to extreme precipitation.

Editor: Dr. Storelvmo Trude Extreme precipitation Moisture transport Back trajectories Atmospheric circulation

SCI

英语

第一 ; 通讯

National Key Research and Development Program of China[2023YFC3011400] ; Shenzhen Science and Technology Program[KCXFZ20201221173601003] ; Henan Provincial Key Laboratory of Hydrosphere and Watershed Water Security, Guangdong Basic and Applied Basic Research Foundation[2022A1515011070] ; Young Scientists Fund of the National Natural Science Foundation of China[42401018] ; Open Research Fund of Henan Provincial Key Laboratory of Hydrosphere[HWWSF202304]

Physical Geography ; Geology

Geography, Physical ; Geosciences, Multidisciplinary

WOS:001317076900001

ELSEVIER

Web of Science

1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China
2.Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB, Canada
3.Univ Gothenburg, Dept Earth Sci, Gothenburg, Sweden
4.North China Univ Water Resources & Elect Power, Yellow River Res Inst, Zhengzhou, Peoples R China
5.North China Univ Water Resources & Elect Power, Henan Prov Key Lab Hydrosphere & Watershed Water S, Zhengzhou, Peoples R China

Chen, Yufan,Zhang, Shuyu,Gong, Guoqing,et al. Impacts of moisture transport on extreme precipitation in the Central Plains Urban Agglomeration, China[J]. GLOBAL AND PLANETARY CHANGE,2024,242.

Chen, Yufan.,Zhang, Shuyu.,Gong, Guoqing.,Chen, Penghan.,Gan, Thian Yew.,...&Liu, Junguo.(2024).Impacts of moisture transport on extreme precipitation in the Central Plains Urban Agglomeration, China.GLOBAL AND PLANETARY CHANGE,242.

Chen, Yufan,et al."Impacts of moisture transport on extreme precipitation in the Central Plains Urban Agglomeration, China".GLOBAL AND PLANETARY CHANGE 242(2024).