Climatic Change, Год журнала: 2025, Номер 178(4)
Опубликована: Март 18, 2025
Язык: Английский
Journal of Climate, Год журнала: 2022, Номер 36(2), С. 693 - 709
Опубликована: Окт. 5, 2022
Abstract Heavy precipitation (HP) events can be preceded by moist heatwaves (HWs; i.e., hot and humid weather), both intensified urbanization. However, the effect of HWs on increasing urban HP remains unknown. Based statistical analyses daily weather observations ERA5 reanalysis data, we herein investigate urban-intensified dividing summer into NoHW- HW-preceded in Yangtze River delta (YRD) agglomeration China. During period 1961–2019, YRD has experienced more frequent, longer-lasting, stronger intense season (i.e., June–August), urbanization contributed to these increases (by 22.66%–37.50%). In contrast, effects are almost absent if remove from all events. Our results show that urbanization-induced associated with, magnified by, areas region. Moist conducive an unstable atmosphere stormy weather, they also enhance heat island intensity, driving over areas. Significance Statement The contribution heavy been widely reported previous studies. (hot extremes); however, it is unknown whether HP. We choose explore this question find contributes frequency, duration, maximum cumulative intensity season. signal not detectable other words, play a key role magnifying Given projected continue expanding occur with frequency future, water cycle merits further investigation.
Язык: Английский
Процитировано
27
Journal of Hydrology, Год журнала: 2022, Номер 613, С. 128417 - 128417
Опубликована: Авг. 28, 2022
Язык: Английский
Процитировано
25
Earth s Future, Год журнала: 2024, Номер 12(7)
Опубликована: Июль 1, 2024
Abstract Heavy precipitation, which is changing significantly as Earth's climate warms, can result in flooding that seriously damages societies. However, little known about how heavy precipitation of varying durations responds to the diverse gradients urban development China. Through statistical analyses spanning from 1990 2021, we have examined shorter‐duration (≤3 days) and longer‐duration (>3 across a spectrum development, encompassing long‐term built‐up (LTB), recently (RTB), rural background catchments within each agglomeration catchment (UAC) We find urbanization primarily influences with more pronounced effect observed LTB catchments. Conversely, influence on appears be weakened RTB The intensification induced by humid regions larger UACs, while weaker UACs. Notably, attribution analysis results geographical detector model confirm our findings. Anthropogenic‐related factors (population density, nighttime light data, impervious surface percent, land temperature) UACs than natural (distance coast, wind elevation), dominate events Our highlight necessity considering spatial difference between UAC center periphery for accurate projections effective prevention potential flood risks future.
Язык: Английский
Процитировано
6
Water Resources Research, Год журнала: 2022, Номер 58(11)
Опубликована: Окт. 28, 2022
Abstract Precipitation intensity–duration–frequency (IDF) curves play a crucial role in the design and planning of urban infrastructure to reduce risk flooding rainfall‐triggered landslides. However, changing rainfall characteristics warming climate render conventional IDF inappropriate due statistical assumption stationarity. In this study, we develop vine copula‐based projections future at sub‐daily multi‐day time scales with multi‐model ensemble five regional simulations over China. Stochastic spatiotemporal downscaling precipitation is achieved generate extreme high spatial (0.1°) temporal (3 hourly) resolution. These downscaled are combined by copula improve reliability accuracy climate‐model‐based relative historical observations. Our findings reveal that stochastic reproduces well based on observations The approach outperforms Bayesian model averaging generating more accurate reliable curves. areas 196 Chinese cities projected experience an increase up 30% intensity nearly two times frequency events under emission scenario (RCP8.5). current than half would thus be inadequate prevent losses caused hazards if designed solely Compared curves, find nonstationary covariate (i.e., extrapolating trends) likely underestimate failures climate. This work highlights guidelines China should upgraded adapt existing
Язык: Английский
Процитировано
22
Earth s Future, Год журнала: 2024, Номер 12(7)
Опубликована: Июль 1, 2024
Abstract Urbanization alters the thermal and dynamic environment of local climate system, resulting in significant impacts on precipitation both urban adjacent areas. Nevertheless, there remains a gap our understanding urbanization‐induced effects asymmetrical, symmetrical, other patterns agglomerations (UAs) with divergent background climates geographic regions at different timescales. Specifically, this asymmetrical change pattern is characterized by an increase heavy (or light) rainfall decrease light heavy) rainfall. Here, we assessed urbanization across 18 UAs situated diverse geographical areas China The results demonstrate that predominantly located humid region. amplified changes Yangtze River Delta, Pearl Beibu Gulf, Middle River, Guanzhong, but exacerbated symmetrical some such as Chengdu‐Chongqing. Notably, effect demonstrates greater significance hourly scale, exemplified where impact nearly twice pronounced when compared to daily scale. Moreover, had either no or has negative within continental arid regions. This related intensity urbanization, complex topography. finding implies managers should consider contexts provide scientific guidance for planning.
Язык: Английский
Процитировано
5
Geophysical Research Letters, Год журнала: 2024, Номер 51(13)
Опубликована: Июль 2, 2024
Abstract Current global climate models (GCMs), limited to grid‐scale land‐atmosphere coupling, cannot represent subgrid urban‐rural precipitation contrasts. This study develops an innovative two‐way coupling framework in the National Center for Atmospheric Research (NCAR) Community Earth System Model version 2 (CESM2) explicitly resolve interaction over individual land units. Results show that urban heat island (UHI) leads rainfall effect (URE), which turn alleviates overestimated UHI China CESM2. The URE manifests as a shift toward more heavy and less light world areas than surrounding rural counterparts. feature is consistent with available observations. In situations, promotes atmospheric instability enhances water vapor holding capacity, resulting areas. Conversely, decreased evaporation from impermeable surfaces diminish relative humidity, suppressing precipitation.
Язык: Английский
Процитировано
4
Atmospheric Research, Год журнала: 2024, Номер unknown, С. 107695 - 107695
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
4
Urban Climate, Год журнала: 2024, Номер 56, С. 102062 - 102062
Опубликована: Июль 1, 2024
Язык: Английский
Процитировано
3
Journal of Geophysical Research Atmospheres, Год журнала: 2025, Номер 130(2)
Опубликована: Янв. 16, 2025
Abstract Heatwave preconditioned‐heavy rainfall (HW_HR), a preconditioned compound event, can cause more damage than single heatwave or rainstorm. Both heatwaves and rainstorms be exacerbated by the presence of cities, but response their compounding to urbanization remains unclear especially at hourly scale. Here, we investigate spatial temporal responses HW_HR typical urban agglomeration, Pearl River Delta, using observations scenario‐based numerical simulations. Compared rural areas, show that in areas has higher probability occurrence mean intensity, its diurnal cycle frequency is narrower, peaking afternoon. The intensity effects most significant, with urbanization‐induced increase being five times non‐heatwave (noHW_HR). Our simulations support suggest changes are intense spatially heterogeneous relatively weak continuous noHW_HR. also preconditioning not only amplifies key variables alter atmospheric conditions provides pre‐storm unstable environment for urban‐induced warm‐dry surface trigger enhance convection. sub‐daily suggests preconditioning‐induced thermodynamic gradually decrease, whereas dynamic as event approaches. study highlights importance understanding on events, providing new insights into role preconditions water cycle.
Язык: Английский
Процитировано
0
The Science of The Total Environment, Год журнала: 2025, Номер 963, С. 178402 - 178402
Опубликована: Янв. 17, 2025
Язык: Английский
Процитировано
0