Asymmetric Impacts of Urbanization on Extreme Hourly Precipitation Across the Yangtze River Delta Urban Agglomeration During 1978–2012 DOI Open Access
Xiaomeng Song, Jianhui Wei,

Jiachen Qi

et al.

Water, Journal Year: 2025, Volume and Issue: 17(10), P. 1531 - 1531

Published: May 19, 2025

Significant progress has been made in understanding how extreme precipitation responds to climate warming across various time scales. However, the impact of urbanization on these events remains unclear. This study aims thoroughly examine effects hourly (EHP) and its spatial heterogeneity based dynamic station classification methods EHP indices using high-resolution records Yangtze River Delta (YRD) urban agglomeration. We also explore contributed changes associated uncertainties. The results indicate an overall increase all YRD, with significant increases being more pronounced areas. Furthermore, correlate positively urbanization, showing greater at higher levels urbanization. While cannot be overlooked, contribution appears relatively limited, contributions less than 50%. are predominantly positive, noticeable for different sub-regions temporal variations during stages or Moreover, influenced by urban–rural methods, especially regarding their contributions.

Language: Английский

Urbanization Enhances Shorter‐Duration Precipitation Intensity in the Yangtze River Delta Region DOI

Xue Xie,

D. Qin,

Mingzhong Xiao

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(8)

Published: April 25, 2025

Abstract Understanding the response of extreme precipitation events under urbanization conditions is vital for mitigating risk urban flooding. Nevertheless, previous studies assessing impact on often neglected role natural climate variations. To fill this gap, study aims to investigate how varying durations responds urbanization, accounting We classified agglomeration Yangtze River Delta (YRD) in East China into nine distinct groups based seasonal patterns, utilizing structural self‐organizing maps (SOM), and explored relationship between with Geographical Detector Model. The results revealed substantial fluctuations within YRD, showing significant spatial variability underscoring importance considering variations studies. After variations, our findings unveiled a notable urbanization‐induced effect, particularly prominent during summer autumn. Additionally, urbanization's influence demonstrated time‐scaling shorter‐duration exhibiting stronger correlation urbanization. Furthermore, interaction elevation surpassed individual factors, intensifying as event duration decreased, especially less than 3 days, indicating more complex mechanism their precipitation. This research enhance understanding shapes patterns. These are crucial planning adaptation strategies address risks associated heavy areas.

Language: Английский

Citations

1
Spatiotemporal Characteristics of Mesoscale Convective Systems in the Yangtze River Delta Urban Agglomeration and Their Response to Urbanization DOI Creative Commons
Xinguan Du, Ting Sun, Kyaw Than Oo

et al.

Atmosphere, Journal Year: 2025, Volume and Issue: 16(3), P. 245 - 245

Published: Feb. 21, 2025

Mesoscale convective systems (MCSs) are major contributors to extreme precipitation in urban agglomerations, exhibiting complex characteristics influenced by large-scale climate variability and local processes. This study utilizes a high-resolution MCS database spanning from 2001 2020 investigate the spatiotemporal variations of MCSs Yangtze River Delta (YRD) agglomeration assess their response urbanization. Our analysis reveals significant spatial temporal differences activities during warm season (April September), including initiation, movement, lifespan, with notable trends observed over period. found contribute substantially hourly precipitation, accounting for approximately 60%, which exceeds contribution total precipitation. Furthermore, role has also increased, driven intensification MCS-induced rainfall. Additionally, exhibit regional differences. Urban areas experience more pronounced changes activity compared surrounding rural regions. Specifically, urbanization contributes 16% MCS-related 19% highlighting its substantial enhancing these Moreover, mountainous water bodies cities show stronger certain than plains. may be attributed climatological conditions that favor regions, as well interactions between urbanization, topography, land–sea contrasts. These complicated dynamics warrant further investigation better understand implications.

Language: Английский

Citations

0
Water-heat-carbon nexus for understanding mechanisms and response thresholds across urbanization gradients DOI Creative Commons
Kaiping Wang, Chenxing Wang,

Jingran Gao

et al.

Geography and sustainability, Journal Year: 2025, Volume and Issue: unknown, P. 100283 - 100283

Published: March 1, 2025

Language: Английский

Citations

0
Trend analysis of the coupling effect between new urbanization and resources-environment in the Guangdong-Hong Kong-Macao Greater Bay area DOI
Haiqiang Dou, Guoqin Zhang

Ecological Indicators, Journal Year: 2025, Volume and Issue: 175, P. 113601 - 113601

Published: May 17, 2025

Language: Английский

Citations

0
Asymmetric Impacts of Urbanization on Extreme Hourly Precipitation Across the Yangtze River Delta Urban Agglomeration During 1978–2012 DOI Open Access
Xiaomeng Song, Jianhui Wei,

Jiachen Qi

et al.

Water, Journal Year: 2025, Volume and Issue: 17(10), P. 1531 - 1531

Published: May 19, 2025

Significant progress has been made in understanding how extreme precipitation responds to climate warming across various time scales. However, the impact of urbanization on these events remains unclear. This study aims thoroughly examine effects hourly (EHP) and its spatial heterogeneity based dynamic station classification methods EHP indices using high-resolution records Yangtze River Delta (YRD) urban agglomeration. We also explore contributed changes associated uncertainties. The results indicate an overall increase all YRD, with significant increases being more pronounced areas. Furthermore, correlate positively urbanization, showing greater at higher levels urbanization. While cannot be overlooked, contribution appears relatively limited, contributions less than 50%. are predominantly positive, noticeable for different sub-regions temporal variations during stages or Moreover, influenced by urban–rural methods, especially regarding their contributions.

Language: Английский

Citations

0