Contradictory influences of urbanization on intense convective rainfall in a subtropical city

Détails

Ressource 1Télécharger: Zhuang 2024.pdf (1630.89 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_7C0F4C269DD7
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Contradictory influences of urbanization on intense convective rainfall in a subtropical city
Périodique
Environmental Research Letters
Auteur⸱e⸱s
Zhuang Qi, Koukoula Marika, Liu Shuguang, Zhou Zhengzheng, Gao Lisha, Peleg Nadav
ISSN
1748-9326
Statut éditorial
Publié
Date de publication
01/10/2024
Peer-reviewed
Oui
Volume
19
Numéro
10
Pages
104020
Langue
anglais
Résumé
In light of the rapid growth in cities, there is a pressing need to explore how urbanization affects extreme weather, especially short-duration convective storms that can potentially trigger urban floods. Here we use a high-resolution Weather Research and Forecasting convection-permitting model to simulate 23 summer convective storms over the subtropical city of Shanghai, China. We simulated these events in three different scenarios: present urban, no-urban, and urban-expansion settings. Results show contradictory findings of urbanization's influence on convective rainfall, which is associated with urban-surroundings hydrothermal differences and diurnal cycles. Urban expansion further intensifies daytime convective rainfall when inhomogeneous temperature and moisture conditions between the city and its surroundings are present, whereas other conditions may suppress rainfall intensity. The findings provide the potential mechanisms of rainfall modification by urban expansion in subtropical cities, offering useful insights for urban planning and flood management in Shanghai and other rapidly urbanizing cities.
Open Access
Oui
Financement(s)
Fonds national suisse / 194649
Création de la notice
30/08/2024 14:31
Dernière modification de la notice
07/09/2024 7:02
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