干旱区生态环境知识资源中心(Arid): Does Urbanization Exacerbate Asymmetrical Changes in Precipitation at Divergent Time Scales in China?

Arid

DOI	10.1029/2023EF004355
	Does Urbanization Exacerbate Asymmetrical Changes in Precipitation at Divergent Time Scales in China?
	Li, Fanggang; Pan, Xin; Xu, Nan; Meng, Xiangjin; Li, Zhiqing; Guluzade, Rufat; Dai, Yang; Yang, Yingbao
通讯作者	Pan, X ; Yang, YB
来源期刊	EARTHS FUTURE
EISSN	2328-4277
出版年	2024
卷号	12 期号:7
英文摘要	Urbanization alters the thermal and dynamic environment of the local climate system, resulting in significant impacts on precipitation in both urban and adjacent areas. Nevertheless, there remains a significant gap in our understanding of urbanization-induced effects on asymmetrical, symmetrical, and other precipitation patterns in urban agglomerations (UAs) with divergent background climates and geographic regions at different timescales. Specifically, this asymmetrical change pattern is characterized by an increase in heavy (or light) rainfall and a decrease in light (or heavy) rainfall. Here, we assessed the effects of urbanization on precipitation patterns across 18 UAs situated in diverse background climates and geographical areas in China at different timescales. The results demonstrate that urbanization predominantly alters precipitation patterns in UAs located in the humid region. Specifically, urbanization amplified asymmetrical changes in Yangtze River Delta, Pearl River Delta, Beibu Gulf, Middle Yangtze River, and Guanzhong, but exacerbated symmetrical changes in precipitation in some regions such as Chengdu-Chongqing. Notably, the urbanization effect demonstrates greater significance at the hourly scale, as exemplified in the Yangtze River Delta, Pearl River Delta, and Middle Yangtze River, where the urban impact is nearly twice as pronounced when compared to the daily scale. Moreover, urbanization had either no effect or has a negative impact on precipitation patterns in UAs located within continental and arid regions. This is related to the intensity of urbanization, background climate and complex topography. This finding implies that urban managers should consider the impact of urbanization on precipitation patterns in different contexts to provide scientific guidance for urban planning. China has undergone rapid urbanization in recent decades, resulting in increased heavy precipitation and decreased light precipitation in specific urban agglomerations. However, the influence of urbanization on different precipitation patterns (e.g., symmetric and asymmetric) at various timescales remains uncertain. This study investigates rainfall pattern changes across 18 urban agglomerations with diverse geographical locations and background climates. Our findings reveal that from 1961 to 2015, urbanization primarily modified precipitation patterns in humid regions, amplifying asymmetric changes in the Yangtze River Delta, Pearl River Delta, Middle Yangtze River, and Beibu Gulf. Importantly, in specific urban agglomerations, the impact of urbanization on precipitation is more pronounced at the hourly scale compared to the daily scale. The influence of urbanization on precipitation change patterns at various time scales were investigated in 18 Urban Agglomerations in China Urbanization has altered the precipitation patterns in the humid zone, amplifying heavy rainfall and suppressing light rainfall in the Yangtze River Delta, Pearl River Delta, Beibu Gulf regions The precipitation effect of urbanization exhibits a more pronounced variation on an hourly scale, being twice as substantial as on a daily scale in specific urban agglomerations
英文关键词	urbanization precipitation patterns urban agglomerations heavy precipitation lighting precipitation divergent timescales
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001273374000001
WOS关键词	HOURLY PRECIPITATION ; URBAN AGGLOMERATION ; AEROSOL IMPACTS ; RIVER DELTA ; HEAT ; SENSITIVITY ; RAINFALL ; EVENTS ; LINK ; CIRCULATION
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403337
推荐引用方式 GB/T 7714	Li, Fanggang,Pan, Xin,Xu, Nan,et al. Does Urbanization Exacerbate Asymmetrical Changes in Precipitation at Divergent Time Scales in China?[J],2024,12(7).
APA	Li, Fanggang.,Pan, Xin.,Xu, Nan.,Meng, Xiangjin.,Li, Zhiqing.,...&Yang, Yingbao.(2024).Does Urbanization Exacerbate Asymmetrical Changes in Precipitation at Divergent Time Scales in China?.EARTHS FUTURE,12(7).
MLA	Li, Fanggang,et al."Does Urbanization Exacerbate Asymmetrical Changes in Precipitation at Divergent Time Scales in China?".EARTHS FUTURE 12.7(2024).