Urban Climate最新文献_第7页

Street albedo distribution's impacts on air temperature and outdoor thermal sensation during heat and cold waves 冷热期街道反照率分布对气温和室外热感觉的影响

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-23 DOI: 10.1016/j.uclim.2025.102551

Matteo Migliari , Loïc Chesne , Adam Postal , Julien Despax , André-Marie Dogbo , Yan Ulanowski , Stéphane Laporte , Sinéad Nicholson , Olivier Baverel

{"title":"Street albedo distribution's impacts on air temperature and outdoor thermal sensation during heat and cold waves","authors":"Matteo Migliari , Loïc Chesne , Adam Postal , Julien Despax , André-Marie Dogbo , Yan Ulanowski , Stéphane Laporte , Sinéad Nicholson , Olivier Baverel","doi":"10.1016/j.uclim.2025.102551","DOIUrl":"10.1016/j.uclim.2025.102551","url":null,"abstract":"<div><div>Climate change adaptation and mitigation require a re-evaluation of urbanisation practices. Uncomfortable summer microclimates discourage outdoor activities, driving people into air-conditioned spaces, the use of which raises outdoor thermal sensation (OTS) and air temperature (T<sub>air</sub>), through expelled waste heat. To avoid this adverse feedback loop, thermally acceptable public spaces are crucial. Streets are the backbone of urban areas and optimising their albedo distribution is a leverage for reducing summer T<sub>air</sub> and OTS. High-albedo surfaces are beneficial for lowering T<sub>air</sub> by reflecting solar radiation, but the reflection might hit people nearby. In contrast, low-albedo surfaces absorb more solar radiation instead of reflecting it. Many cities feature dark-coloured roadways for vehicle traffic and brighter sidewalks for pedestrians. This distribution appears unsuitable for extreme summer conditions: dark roadways retain heat despite low foot traffic, while light-coloured sidewalks, due to their smaller dimensions, have less impact on T<sub>air</sub> and may increase pedestrian OTS through reflected radiation. Our work demonstrates via validated ENVI-met simulations that a reversed street albedo distribution, featuring light-coloured roadways paired with darker sidewalks, would improve current urban microclimates during heatwaves. This change lower T<sub>air</sub> and OTS daytime values and decrease the percentage of frequented spaces posing health risks, with limited rebound effects during cold waves.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102551"},"PeriodicalIF":6.9,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Concentrations, temporal variations, human exposures and source identifications of PCDD/fs from an urban site employing passive air samplers in Bursa, Türkiye 使用被动空气采样器从布尔萨市一个城市场地提取PCDD/fs的浓度、时间变化、人类暴露和来源鉴定

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-23 DOI: 10.1016/j.uclim.2025.102585

Tarık Donmez, Berke Gülegen, Yücel Tasdemir

{"title":"Concentrations, temporal variations, human exposures and source identifications of PCDD/fs from an urban site employing passive air samplers in Bursa, Türkiye","authors":"Tarık Donmez, Berke Gülegen, Yücel Tasdemir","doi":"10.1016/j.uclim.2025.102585","DOIUrl":"10.1016/j.uclim.2025.102585","url":null,"abstract":"<div><div>Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzo-furans (PCDFs) are toxic, long-lasting pollutants that accumulate in human fat tissue, posing significant health risks. The obtained data were evaluated based on congener profiles and levels, possible sources, seasonal concentration changes, health risks and atmospheric transport. This study investigated atmospheric PCDD/F levels in an urban site from June 2022 to June <span><span>2023</span></span> using three passive air samplers (PASs) in Bursa, Türkiye. Monthly samples were taken using three passive air samplers. The findings demonstrated the utility of PAS as a cost-effective and reliable monitoring device. Seasonal average concentrations were 324.66 ± 51.87 fg/m<sup>3</sup> in spring, 234.79 ± 57.57 fg/m<sup>3</sup> in summer, 363.07 ± 77.99 fg/m<sup>3</sup> in fall and 479.88 ± 73.20 fg/m<sup>3</sup> in winter. The yearly mean concentration value was 341.50 ± 108.27 fg/m<sup>3</sup>. The measured concentrations in this study corresponded closely to those reported for regions with similar characteristics. The most dominant congeners observed during the sampling period were OCDD, OCDF, 1,2,3,4,6,7,8-HpCDF and 1,2,3,4,6,7,8-HpCDD. The measured concentrations indicated no threatening situation in the risk evaluation. Pollutant transport was determined to be mostly local, suggesting limited long-range movement after employing the Clausius-Clapeyron equation. Principal component analysis (PCA) identified vehicle emissions, residential heating and industrial combustion as key sources of PCDD/Fs. Seasonal variation and source analysis emphasized the effect of human activities and meteorological patterns. This study contributes to understanding urban air pollution and supports future efforts to manage PCDD/F emissions in similar regions.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102585"},"PeriodicalIF":6.9,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From coverage to shadows: How nonlinear vegetation-building synergy reshape urban cooling 从覆盖到阴影：非线性植被建设协同如何重塑城市冷却

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-22 DOI: 10.1016/j.uclim.2025.102573

Zhangjian Ding, Jianping Gu

{"title":"From coverage to shadows: How nonlinear vegetation-building synergy reshape urban cooling","authors":"Zhangjian Ding, Jianping Gu","doi":"10.1016/j.uclim.2025.102573","DOIUrl":"10.1016/j.uclim.2025.102573","url":null,"abstract":"<div><div>Urban overheating poses escalating threats to energy consumption, human health, and environmental sustainability in rapidly developing high-density cities. However, previous studies have inadequately addressed the three-dimensional shading interactions between vegetation and buildings that shape localized cooling effects. Therefore, this study develops a Horizontal-Roughness-Overshadow (HRO) framework to quantify vegetation-based cooling performance under varying building-shadow conditions at multiple times of day of ChongQing. Results reveal that although three-dimensional vegetation shading significantly alleviates urban overheating, denser canopies can impede airflow and induce threshold-dependent, nonlinear temperature feedbacks—evidenced by an early-morning GCE_V threshold of approximately 4 marking the switch from warming to cooling effects— with notable spatial heterogeneity showing that core urban areas exhibit distinct overshadow patterns compared to peripheral zones. These findings not only deepen theoretical understanding of vegetation's 3D cooling mechanisms but also offer tangible management strategies-such as balancing canopy density with ventilation and refining vertical greening layouts-for more efficient, context-specific heat mitigation.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102573"},"PeriodicalIF":6.9,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of extreme climates on sustainable cooling: A case study of a subtropical office building 极端气候对可持续制冷的影响：以亚热带办公大楼为例

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-21 DOI: 10.1016/j.uclim.2025.102583

Fu-Wing Yu, Wai-Tung Ho, Chak-Fung Jeff Wong

{"title":"Impact of extreme climates on sustainable cooling: A case study of a subtropical office building","authors":"Fu-Wing Yu, Wai-Tung Ho, Chak-Fung Jeff Wong","doi":"10.1016/j.uclim.2025.102583","DOIUrl":"10.1016/j.uclim.2025.102583","url":null,"abstract":"<div><div>This study comprehensively examines how a newly compiled extreme weather year (EWY) and climate change forecasts for 2050 and 2080 affect the energy usage, efficiency, and carbon emissions of chiller systems and thermal comfort in commercial buildings in a subtropical climate. The least-square support vector regression based on historical data (1993–2023) is used to justify hot weather conditions. EnergyPlus simulations predict annual cooling loads, electricity consumption, and predicted mean votes across different zones in a 40-story reference office building in subtropical Hong Kong. Compared to the typical meteorological year (TMY) case, the results show a minor increase in predicted peak cooling demand: 0.46 % in the EWY, 0.40 % in 2050 and 0.37 % in 2080. Thermal acceptability drops by 2.00–18.13 % in EWY, 0.41–15.78 % in 2050 and 4.15–27.79 % in 2080. Applying an ultra-efficient chiller system can lower annual electricity consumption by 12.16–13.37 %, contributing to the 30–40 % reduction target for carbon neutrality by 2050. Moreover, this advanced system can mitigate rising peak and annual carbon emissions associated with extreme heat. This study uniquely combines extreme weather analysis and climate forecasts to assess and improve the energy management of chiller systems, highlighting actionable strategies for sustainability in response to future climate challenges.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102583"},"PeriodicalIF":6.9,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatiotemporal networks for multi-city and multi-task air pollutant prediction ——Beijing, Shanghai and Shenzhen as examples 多城市、多任务大气污染物预测的时空网络——以北京、上海、深圳为例

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-21 DOI: 10.1016/j.uclim.2025.102584

Dong Li , Lei Wang , Jian Wang , Cai Chen , Xingxing Xiao , Guojian Zou

{"title":"Spatiotemporal networks for multi-city and multi-task air pollutant prediction ——Beijing, Shanghai and Shenzhen as examples","authors":"Dong Li , Lei Wang , Jian Wang , Cai Chen , Xingxing Xiao , Guojian Zou","doi":"10.1016/j.uclim.2025.102584","DOIUrl":"10.1016/j.uclim.2025.102584","url":null,"abstract":"<div><div>Predicting air pollutant concentrations accurately is crucial for directing the development of policies and pollution mitigation measures. This paper proposes ST-RTNet, a unique deep learning model, to achieve high-precision prediction of air pollutant concentrations in multiple cities by integrating spatiotemporal attention mechanisms. Three components make up the model: reconstructed residual network with spatial attention module, temporal attention module based on multi-head self-attention mechanism, and temporal convolutional network (TCN). Convolutional neural network (CNN) and spatial attention module work together to create the reconstructed unit, which is the reconstructed residual network used to thoroughly extract the spatial characteristics of meteorological and air pollutant concentrations at monitoring stations. To concentrate on the impact of temporal features of past air pollution data on the forecast at each time step, the temporal attention module uses a multi-head self-attention mechanism. Subsequently, the TCN effectively captures the multi-step spatial and temporal dependencies, further extracts the temporal features, and finally completes the air pollutant prediction task through the fully connected layer. On real datasets from Beijing, Shanghai and Shenzhen, ST-RTNet exhibits higher accuracy and lower RMSE in both single-step and multi-step forecasting. The outcomes of the experiment demonstrate that ST-RTNet exhibits a larger absolute error but better trend prediction ability in the high concentration region, and this property is most significant on the Beijing dataset (PM<sub>2.5</sub> mean 34.285 μg/m<sup>3</sup>), which presents highest RMSE (8.237) and Corr (0.981). In addition, ST-RTNet demonstrated good robustness in the prediction of several cities and different air pollutant concentrations, verifying its wide applicability.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102584"},"PeriodicalIF":6.9,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Urban heat and soil sealing: A ten-year analysis of temperature dynamics in a semi-arid Mediterranean region 城市热力与土壤密封：地中海半干旱地区十年温度动态分析

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-20 DOI: 10.1016/j.uclim.2025.102579

Emilio José Illán-Fernández , Alfredo Pérez-Morales , Martin Sudmanns , Dirk Tiede

{"title":"Urban heat and soil sealing: A ten-year analysis of temperature dynamics in a semi-arid Mediterranean region","authors":"Emilio José Illán-Fernández , Alfredo Pérez-Morales , Martin Sudmanns , Dirk Tiede","doi":"10.1016/j.uclim.2025.102579","DOIUrl":"10.1016/j.uclim.2025.102579","url":null,"abstract":"<div><div>Soil sealing and urbanization significantly influence urban heat island (UHI) effects, particularly in semi-arid regions. This study examines the impact of soil sealing on urban temperature dynamics in Murcia, Spain, over a ten-year period (2008–2017). Using the UrbClim model and land use data, the analysis reveals that nighttime is the most critical period for heat retention, as sealed surfaces release stored heat. A 24 °C threshold for summer nights as a maximum temperature for human wellbeing underscores the severity of heat retention in urbanised areas, with city centres and industrial zones frequently exceeding this threshold, highlighting implications for public health and energy demand.</div><div>During daylight hours, soil sealing has a reduced effect on temperature, as solar radiation affects all surfaces equally. In contrast, nighttime temperature contrasts between sealed and unsealed areas are substantial, driven by the inability of impervious surfaces to dissipate heat effectively. Seasonal variability further reveals that while the absolute UHI intensity peaks in summer, relative differences are notable in cooler seasons. Differences among artificial land uses also emerge, with urban cores experiencing higher mean temperatures than suburban areas due to limited vegetation and greater imperviousness.</div><div>This study underscores the spatio-temporal variability of UHI effects and highlights the importance of understanding land use-specific contributions to urban temperature dynamics. These findings provide a basis for developing targeted strategies to mitigate UHI impacts and improve urban resilience to climate challenges.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102579"},"PeriodicalIF":6.9,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Urban microscale simulations based on a Local Climate Zone wizard: Concept and validation using the PALM model system 基于局地气候带向导的城市微尺度模拟：概念和使用PALM模型系统的验证

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-20 DOI: 10.1016/j.uclim.2025.102576

Julian Anders, Björn Maronga

{"title":"Urban microscale simulations based on a Local Climate Zone wizard: Concept and validation using the PALM model system","authors":"Julian Anders, Björn Maronga","doi":"10.1016/j.uclim.2025.102576","DOIUrl":"10.1016/j.uclim.2025.102576","url":null,"abstract":"<div><div>Local Climate Zones (LCZs) constitute a classification system for urban and rural sites, linking physical properties and urban morphology with characteristic near-surface temperature regimes. We developed a new python-based tool, called LCZ-wizard, that allows for creating and customizing physical surface characteristics of entire cities based on small units consistent with the LCZ definitions. Therewith, we are able to generate and facilitate microscale meteorological modeling of cities based on a LCZ classification only, providing an addition to traditional remote sensing-based mapping and in-situ measurement methods to study the urban microclimate. In this paper, we evaluate the performance of the building-resolving PALM model system under heatwave conditions, with surface properties provided by the LCZ-wizard. One simulation was performed for each standard LCZ, and results show that characteristic air temperature and human thermal comfort patterns were reproduced by PALM for each LCZ. Furthermore, we performed additional simulations for an existing city quarter in Berlin, Germany, one with realistic surface characteristics and two with semi-idealized LCZ surface information using the LCZ-wizard. The comparison reveals only small variations and differences (0.17K and 0.34K) in the diurnal cycle of air temperatures—when averaged over a typical LCZ-scale. Therewith we can verify the functionality and applicability of the LCZ-wizard for systematic investigations of urban environments in microscale simulations. We hence believe that the LCZ-wizard will be an valuable tool for urban climate research, e.g. by allowing high-fidelity microclimate simulations based on a LCZ mapping only, when detailed information on three-dimensional surface characteristics are absent.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102576"},"PeriodicalIF":6.9,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling the efficiency of Nature-based Solutions to decrease extreme heat in dense urban areas in Vienna at micro- to city-scale 模拟基于自然的解决方案的效率，以减少维也纳人口密集的城市地区在微观到城市规模的极端高温

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-18 DOI: 10.1016/j.uclim.2025.102580

Maja Žuvela-Aloise , Marianne Bügelmayer-Blaschek , Claudia Hahn , Martin Schneider

{"title":"Modelling the efficiency of Nature-based Solutions to decrease extreme heat in dense urban areas in Vienna at micro- to city-scale","authors":"Maja Žuvela-Aloise , Marianne Bügelmayer-Blaschek , Claudia Hahn , Martin Schneider","doi":"10.1016/j.uclim.2025.102580","DOIUrl":"10.1016/j.uclim.2025.102580","url":null,"abstract":"<div><div>Urban environments experience high temperatures during heat waves due to their prevalence of built infrastructure and lack of unsealed, natural areas. This study analyses the effectiveness of Nature-based Solutions (NbS) to reduce urban heat in a densely built environment using a modelling approach that (i) represents realistic NbS implementation on a micro-scale and (ii) upscales their application for the entire city. The modelling approach is applied to the city of Vienna, Austria for a representative clear-sky hot day. The city-scale simulations are further combined with climatological data to evaluate the change in heat-related climate indices due to implementation of NbS and technical measures. A selected densely built area is simulated with the micro-scale ENVI-met model and an estimated NbS distribution/size is used as a base for city-scale simulations with the MUKLIMO_3 model. The city-scale simulations analysed in six separate scenarios show the greatest cooling effect for a combination of measures. Furthermore, the micro-scale model shows that NbS display a stronger cooling effect than the technical ones. The comparison of model simulations shows a similar cooling effect. Our results demonstrate that combined micro- and city-scale models can provide further insights into urban heat assessment and the impact of adaptation measures.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102580"},"PeriodicalIF":6.9,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the water availability and efficiency of inter-basin water transfer projects of urban water supply systems under climate change 气候变化下城市供水系统跨流域调水工程的水资源有效性与效率探讨

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-17 DOI: 10.1016/j.uclim.2025.102582

Gokhan Cuceloglu , Saeid Ashraf Vaghefi , Karim C. Abbaspour , Izzet Ozturk

{"title":"Exploring the water availability and efficiency of inter-basin water transfer projects of urban water supply systems under climate change","authors":"Gokhan Cuceloglu , Saeid Ashraf Vaghefi , Karim C. Abbaspour , Izzet Ozturk","doi":"10.1016/j.uclim.2025.102582","DOIUrl":"10.1016/j.uclim.2025.102582","url":null,"abstract":"<div><div>Megacities, characterized by their massive and ever-increasing population, exhibit an intense demand for water. Additionally, the impacts of climate change significantly heighten the risk to urban water systems. Capacity expansion projects with inter-basin water transfers are recognized as reliable sources to increase the resilience of megacities where hydrologic conditions are limited. This study presents a novel integrated approach to water resources modeling. It combines a physically-based watershed model with water network simulation software, aiming to assess and enhance the resilience of the Istanbul water supply system against climate-induced challenges. This approach aims to provide a comprehensive understanding of each water transfer scenario's potential impacts and efficacy. Our simulations indicate that without further interventions to reduce water demand and provide strategic resources, the city has a high risk of water scarcity, more likely after the 2050s. Though the new infrastructure development has the potential to substantially increase the security and resilience of the system, there will still be a need to put other alternative sources into practice to match future demand in the late century. This study demonstrates the significance of simulation-based modeling to test planned actions and strategies to evaluate their efficiency in reducing climate-based risks in water supply systems.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102582"},"PeriodicalIF":6.9,"publicationDate":"2025-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of urban land use impacts on small-scale precipitation patterns during warm seasons: A case study of Japanese cities 暖季城市土地利用对小尺度降水模式的影响评价——以日本城市为例

IF 6.9 2区工程技术

Urban Climate Pub Date : 2025-08-15 DOI: 10.1016/j.uclim.2025.102577

Takashi Kyakuno

{"title":"Assessment of urban land use impacts on small-scale precipitation patterns during warm seasons: A case study of Japanese cities","authors":"Takashi Kyakuno","doi":"10.1016/j.uclim.2025.102577","DOIUrl":"10.1016/j.uclim.2025.102577","url":null,"abstract":"<div><div>In this study, we investigated the association between urbanization and extreme precipitation during hot seasons and examined the frequency and intensity of precipitation events exceeding predefined thresholds within several radii around three major Japanese metropolises, with the main radius set at 50 km. Our analysis used Radar-Raingauge Analyzed Precipitation data with a resolution of approximately 1 km. A distinguishing aspect of our study is the application of an image processing method to process planar precipitation data, thereby enabling the isolation of small-scale rain events and intense cores from large-scale precipitation events. Furthermore, numerical simulations were performed utilizing Markov chain Monte Carlo methods. Our findings indicate that extreme precipitation is generally more intense in urban environments compared to nonurban areas. Notably, this association is more pronounced for precipitation intensities exceeding 30 mm/h compared with those exceeding 10 mm/h. Additionally, we conducted local bivariate relationship analyses to assess the spatial relationships between urban land use and extreme precipitation, as well as between topography and extreme precipitation. With respect to urban land use, a potential positive correlation was observed in coastal urban areas, especially in the downwind regions of city centers; however, this varied depending on the terrain and location. These insights can inform urban planning efforts aimed at enhancing disaster prevention and promoting environmental sustainability.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"63 ","pages":"Article 102577"},"PeriodicalIF":6.9,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144842718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0