Urban Climate最新文献_第2页

Urban digital twin for assessing and understanding urban Heat Island impacts 用于评估和理解城市热岛影响的城市数字孪生

IF 6 2区工程技术

Urban Climate Pub Date : 2025-07-04 DOI: 10.1016/j.uclim.2025.102530

Lidia Vitanova, Dessislava Petrova-Antonova, Evgeny Shirinyan

{"title":"Urban digital twin for assessing and understanding urban Heat Island impacts","authors":"Lidia Vitanova, Dessislava Petrova-Antonova, Evgeny Shirinyan","doi":"10.1016/j.uclim.2025.102530","DOIUrl":"10.1016/j.uclim.2025.102530","url":null,"abstract":"<div><div>Urban Digital Twin (UDT) provides knowledge and technologies for data-driven decision support for a broad group of stakeholders towards developing sustainable cities and communities. However, its implementation is associated with several problems, including data integration and quality, model complexity and uncertainty, computational resources, spatial and temporal resolution, and validation. Addressing these challenges requires innovative technological solutions and development efforts in the fields of urban modelling and digital twin technologies. This study proposes an approach for performing climate simulations using the state-of-the-art Weather Research & Forecasting Model (WRF) and integration of the results with very high resolution, representing the relevant features of air temperature distributions over a wide area, within an UDT. The impacts of Urban Heat Islands (UHIs) on air temperatures were investigated, analysed and visualised based on data collected from heterogeneous sources in Sofia City, Bulgaria. The results show a strong UHI effect on temperature of around 6.0 °C in the central part of the city compared to the suburbs at 2100 Local Standard Time (LST) in August 2018, due to urbanisation and energy consumption from buildings. The study indicates that areas experiencing an increase in temperature and energy consumption require high attention and the implementation of feasible measures.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102530"},"PeriodicalIF":6.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144563633","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

Health effects of summer extreme heat and humidity in urban Rio de Janeiro (Brazil) by demographic and educational level 里约热内卢（巴西）城市夏季极端高温和极端潮湿对健康的影响，按人口和教育水平分列

IF 6 2区工程技术

Urban Climate Pub Date : 2025-07-04 DOI: 10.1016/j.uclim.2025.102524

José Antonio López-Bueno , Renata Libonati , Djacinto Monteiro dos Santos , Miguel Ángel Navas-Martin , Julio Díaz , Cristina Linares , Ana Russo , Ricardo Trigo

{"title":"Health effects of summer extreme heat and humidity in urban Rio de Janeiro (Brazil) by demographic and educational level","authors":"José Antonio López-Bueno , Renata Libonati , Djacinto Monteiro dos Santos , Miguel Ángel Navas-Martin , Julio Díaz , Cristina Linares , Ana Russo , Ricardo Trigo","doi":"10.1016/j.uclim.2025.102524","DOIUrl":"10.1016/j.uclim.2025.102524","url":null,"abstract":"<div><h3>Background</h3><div>Local studies on heat-related mortality in Brazil are limited, hindering targeted Heat-Health Action Plans (HHAPs).</div></div><div><h3>Methods</h3><div>This is a time series on the Metropolitan Region of Rio de Janeiro (MRJ) between 1997 and 2019. The epidemiological threshold (TTrh) for extreme heat events (EHEs) was identified using temperature-mortality associations, adjusting for trends, seasonality, and autoregression (Box-Jenkins). EHEs are those summer days (DJF) with maximum temperatures > TTrh. Attributable mortality (AM%) was estimated by time-controlled Poisson GLM models. Dependent variable was natural-cause mortality, and independent variables were EHE intensity in °C (Theat), duration of the EHE, rank of the event (order), and their corresponding lagged variables. Subgroup analyses included age, sex, race, and education.</div></div><div><h3>Results</h3><div>The TTrh was 34 °C (73rd percentile). RH contributes to explain the underlying effects of heat on health, but it did not improve the predictive power of the model. The most vulnerable groups were the elderly, women, less educated people, and Black and Brown. The most significant EHEs are among the first of each season.</div></div><div><h3>Conclusion</h3><div>This is the first study to establish an epidemiological heat wave threshold for MRJ. HHAPs should be triggered when forecasts predict Tmax above 34 °C. A climatological approach is inadequate for early warnings. Prevention should prioritize women, lower socioeconomic groups, and the elderly. Although humidity did not improve model performance, MRJ's high humidity levels may pose risks under combined heat-humidity events, highlighting the need to consider synoptic conditions in future protocols.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102524"},"PeriodicalIF":6.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549455","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

Evaluating the effectiveness of tree canopy and building shade in urban heat mitigation using solar radiation transmittance 利用太阳辐射透过率评价树冠和建筑遮阳在城市减热中的效果

IF 6 2区工程技术

Urban Climate Pub Date : 2025-07-03 DOI: 10.1016/j.uclim.2025.102522

Yi-Chen Wu, Chi-Lin Lu, Tzu-Ping Lin

{"title":"Evaluating the effectiveness of tree canopy and building shade in urban heat mitigation using solar radiation transmittance","authors":"Yi-Chen Wu, Chi-Lin Lu, Tzu-Ping Lin","doi":"10.1016/j.uclim.2025.102522","DOIUrl":"10.1016/j.uclim.2025.102522","url":null,"abstract":"<div><div>Urban Heat Island (UHI) effects challenge pedestrian thermal comfort and urban livability, particularly in high-density cities. This study employs Solar Radiation Transmittance (SRT) mapping and Physiologically Equivalent Temperature (PET) analysis to quantify urban shading benefits, with in-situ measurements in Tainan and Taipei, Taiwan. A GIS-based approach standardizes tree shade and building shadow effects on solar radiation, identifying shade-deficient areas.</div><div>Results indicate that tree shade provides stable cooling effects, while building shadow significantly reduces solar radiation but may exacerbate UHI. Field measurements show SRT values ranging from 0.18 to 0.60 for tree shade and 0.02 to 0.25 for building shadow, with a strong negative correlation between Leaf Area Index (LAI) and SRT (R<sup>2</sup> = 0.95). Increased shading reduced PET by 1–2 °C, enhancing thermal comfort and walkability.</div><div>This study introduces the concept of micro-scale and urban grid-scale SRT. In Taiwan, common tree species exhibit SRT values of 0.2–0.5 (mean = 0.3), while building shadow SRT ranges from 0.02 to 0.18 (mean = 0.14). Using SRT = 0.3, ArcGIS solar radiation simulations corrected sub-canopy radiation, and grid-based SRT<sub>j</sub> assessed baseline urban radiation conditions.</div><div>Findings provide a spatially explicit approach for urban planners to prioritize shading improvements in high-exposure areas, contributing to sustainable heat adaptation strategies.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102522"},"PeriodicalIF":6.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535975","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

How does anthropogenic heat emissions from buildings affect urban heat island intensity? Based on neighborhood scale and urban scale analysis 建筑物的人为热排放如何影响城市热岛强度？基于社区规模和城市规模的分析

IF 6 2区工程技术

Urban Climate Pub Date : 2025-07-02 DOI: 10.1016/j.uclim.2025.102525

Xiaoqing Zhou , Yongbo Cui , Chengliang Fan , Yundan Liao , Xiang Zhu

{"title":"How does anthropogenic heat emissions from buildings affect urban heat island intensity? Based on neighborhood scale and urban scale analysis","authors":"Xiaoqing Zhou , Yongbo Cui , Chengliang Fan , Yundan Liao , Xiang Zhu","doi":"10.1016/j.uclim.2025.102525","DOIUrl":"10.1016/j.uclim.2025.102525","url":null,"abstract":"<div><div>As global climate change intensifies, anthropogenic heat emissions from buildings (AHEB) have become a key factor in the deterioration of the urban thermal environment. This study investigated the effect of AHEB on the outdoor thermal environment and its contribution to the urban heat island (UHI) in different Local Climate Zones (LCZ) in Guangzhou City. This study explores the spatial distribution of AHEB induced temperature changes through numerical simulation by building an AHEB model. Secondly, the thermal storage effect of AHEB and its influencing factors are analyzed through statistical analysis methods. Finally, AHEB mitigation measures are proposed to quantify the impacts of AHEB on the urban environment. The results showed that a very compact low-rise residential neighborhood (LCZ2.5) exhibited ambient temperatures 1.3 °C higher than other layouts. Building density, height, and configuration significantly influenced the thermal storage effect of AHEB. The contribution of AHEB to UHI varied throughout the day, reaching a minimum of approximately 5 % between 3:00 p.m. and 5:00 p.m., while peaking between 2:00 a.m. and 6:00 a.m., contributing about 54 % to the UHI effect. This study proposes improvement measures for AHEB from four different perspectives. These findings offer valuable guidance for planning and designing residential neighborhoods in hot, humid areas, helping to mitigate AHEB adverse effects on the urban thermal environment.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102525"},"PeriodicalIF":6.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522772","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

Discovering directional relationships between urban morphology and thermal environment using an anisotropic 3D urban texture model 利用各向异性三维城市纹理模型发现城市形态与热环境之间的方向性关系

IF 6 2区工程技术

Urban Climate Pub Date : 2025-07-01 DOI: 10.1016/j.uclim.2025.102532

Zhewei Liang , Shengyu Jin , Huan Gao , Mengmeng Wang , Qingfeng Guan

{"title":"Discovering directional relationships between urban morphology and thermal environment using an anisotropic 3D urban texture model","authors":"Zhewei Liang , Shengyu Jin , Huan Gao , Mengmeng Wang , Qingfeng Guan","doi":"10.1016/j.uclim.2025.102532","DOIUrl":"10.1016/j.uclim.2025.102532","url":null,"abstract":"<div><div>Urban morphology generally refers to the structure and layout of urban space and is often characterized by urban texture. Rapid urbanization has changed the shape of cities and created environmental challenges, especially in urban thermal environments. However, the directional relationship between urban morphology and the thermal environment has yet to be fully explored. Existing studies often rely on 2D models, which fail to capture the complexity of 3D urban morphology. Moreover, the influence of urban thermal anisotropy on this relationship is insufficiently quantified. To address these, this study proposes an anisotropic 3D urban texture model which divides surrounding space into directional sectors and generating distinct texture curves representing variations in 3D building density. The model was applied in Wuhan, China, to analyze the relationship between urban morphology and land surface temperature (LST) using random forest regression. The fitting accuracy (R<sup>2</sup>) of the proposed anisotropic model reached 0.725, which was 13.46 % higher than the original isotropic model. Furthermore, the study evaluated the contributions of 3D texture features from different orientations to LST. The proposed model provides a quantitative tool for understanding the directional influences of 3D urban morphology on environmental issues like temperature and air quality.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102532"},"PeriodicalIF":6.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522771","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

Impacts of urban dynamics and thermodynamics on convective rainfall across different urban forms 城市动力学和热力学对不同城市形态对流降雨的影响

IF 6 2区工程技术

Urban Climate Pub Date : 2025-07-01 DOI: 10.1016/j.uclim.2025.102499

Herminia Torelló-Sentelles , Gabriele Villarini , Marika Koukoula , Nadav Peleg

{"title":"Impacts of urban dynamics and thermodynamics on convective rainfall across different urban forms","authors":"Herminia Torelló-Sentelles , Gabriele Villarini , Marika Koukoula , Nadav Peleg","doi":"10.1016/j.uclim.2025.102499","DOIUrl":"10.1016/j.uclim.2025.102499","url":null,"abstract":"<div><div>Urban areas have been shown to impact convective rainfall over or near them. However, predicting the urban rainfall effect across different cities remains challenging because it is unclear which urban properties are the main drivers of rainfall modifications. Here, we simulate 11 summertime convective rainfall events with the Weather Research and Forecasting (WRF) model that occurred in Indianapolis, Indiana. To isolate the role of urban form, we replace the urban footprint of Indianapolis with those of eight other cities to assess links between different urban forms and urban rainfall effects. We also perform sensitivity tests to examine whether building density relates to the urban rainfall effect. Out of the simulated rainfall events, half intensified while passing over the cities, and half were suppressed. Rainfall intensification occurred when background wind speeds were low and the urban heat island effect was strong, resulting in increased vertical uplift and a deeper boundary layer, which enhanced convection. We find that urban rainfall intensification effects are the largest over the city cores and in their downwind boundaries. In contrast, convective rainfall was suppressed when background wind speeds were high, and the urban heat island effect was weak. In these cases, the strength of vertical uplift and the height of the boundary layer were reduced, inhibiting convection due to reduced moisture in the boundary layer and large deceleration effects at the surface due to the increased surface roughness of urban areas. While the magnitude of the changes in rainfall intensity tends to be related to city size, no relationship was found with its building density.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102499"},"PeriodicalIF":6.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518353","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

Firestorm in California: The new reality for wildland-urban interface regions 加州的火风暴：荒地与城市交界地区的新现实

IF 6 2区工程技术

Urban Climate Pub Date : 2025-06-30 DOI: 10.1016/j.uclim.2025.102528

Afshin Amiri , Silvio Gumiere , Hossein Bonakdari

{"title":"Firestorm in California: The new reality for wildland-urban interface regions","authors":"Afshin Amiri , Silvio Gumiere , Hossein Bonakdari","doi":"10.1016/j.uclim.2025.102528","DOIUrl":"10.1016/j.uclim.2025.102528","url":null,"abstract":"<div><div>The January 2025 wildfires in Los Angeles County, one of the most catastrophic fire seasons in recent decades, were driven by a confluence of extreme drought, high temperatures, and intense Santa Ana winds. While wildfires are a familiar threat in California, the unprecedented intensity, frequency, and scale of these blazes pushed residents and officials to confront challenges unlike anything the state had previously faced. This study examines the environmental conditions preceding the fires, focusing on multi-source satellite-derived and reanalysis datasets of soil moisture, temperature, precipitation anomalies, and wind patterns. The anomalous soil moisture depletion resulting from negative precipitation anomalies in southern California, combined with temperature anomalies exceeding +2.8 °C, created highly flammable conditions, while gusty winds exacerbated fire spread. Using the Moderate Resolution Imaging Spectroradiometer (MODIS) and the European Centre for Medium-Range Weather Forecasts Reanalysis v5 for Land (ERA5-Land) datasets, we performed spatial and temporal anomaly analyses to quantify deviations from climatological norms. Spatial analysis revealed a strong correlation between moisture deficits and fire intensity, particularly in the wildland-urban interface zones. Additionally, the research highlights how a decrease in leaf area index (LAI) and prolonged aridity have increased vegetation vulnerability, contributing to the rapid escalation of fires. The findings underscore the urgent need for integrated climate adaptation strategies and resilient land-use planning to mitigate wildfire risks in wildland-urban zones.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102528"},"PeriodicalIF":6.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518243","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

Construction of a nested cold island network based on multiple urban scales: A study in Nanchang, China 基于多城市尺度的巢式冷岛网络构建——以南昌为例

IF 6 2区工程技术

Urban Climate Pub Date : 2025-06-30 DOI: 10.1016/j.uclim.2025.102526

Junqi Wang , Song Yang , Linghua Duo , Xiao Liu , Bao-Jie He

{"title":"Construction of a nested cold island network based on multiple urban scales: A study in Nanchang, China","authors":"Junqi Wang , Song Yang , Linghua Duo , Xiao Liu , Bao-Jie He","doi":"10.1016/j.uclim.2025.102526","DOIUrl":"10.1016/j.uclim.2025.102526","url":null,"abstract":"<div><div>Mitigating heat islands is a critical issue for many cities to improve urban environmental quality. Variations in topography, urban development patterns, and thermal environmental characteristics across different spatial scales lead to scale-dependent heat islands. The mitigation effects of various factors on urban thermal environments are also dependent on scales. However, existing studies on the construction of cold island networks have not adequately addressed the factor differences with scales. Therefore, this study used the random forest algorithm to explore the impact of various influencing factors on the urban thermal environment of Nanchang, China, across different spatial scales. Additionally, a multi-scale collaborative nested cold island network was constructed using the Morphological Spatial Pattern Analysis (MSPA). The results verified that the dependence of influencing factors with urban scale, especially regarding elevation and building index. In the nested analysis of the multi-scale cold island network, 13 cooling sources were identified, covering a total area of 40.707 km<sup>2</sup>, of which 9 sources exceed 1 km<sup>2</sup>. Moreover, 15 segments of nested cooling corridors were identified, totaling 21.275 km. The nested cooling sources and corridors are capable of exerting cold island effects across different scales and should be prioritized for protection. Overall, the construction of the nested cold island network promotes the understanding in developing cooling strategies from a multi-scale perspective and valuable insights into heat island mitigation.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102526"},"PeriodicalIF":6.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513563","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

Can urban green space improve carbon emission performance? Double test based on efficiency and spatial economics 城市绿地能否改善碳排放绩效？基于效率和空间经济学的双重检验

IF 6 2区工程技术

Urban Climate Pub Date : 2025-06-30 DOI: 10.1016/j.uclim.2025.102513

Jing Li , Chengyu Li , Yulin Lu

{"title":"Can urban green space improve carbon emission performance? Double test based on efficiency and spatial economics","authors":"Jing Li , Chengyu Li , Yulin Lu","doi":"10.1016/j.uclim.2025.102513","DOIUrl":"10.1016/j.uclim.2025.102513","url":null,"abstract":"<div><div>At present, the great potential of urban green space (UGS) in adapting to climate change and promoting low-carbon development of society has been underestimated. This study introduces a two-dimensional evaluation framework that assesses the role of UGS in improving carbon emission performance (CEP) from an efficiency perspective and analyzes its spatial effects on CEP from a spatial economics perspective. Using panel data from 282 Chinese cities from 2006 to 2021, this study first compares traditional carbon emission performance (CEP-T) with CEP considering green space (CEP-G) using the Epsilon-based measure model with undesirable outputs (UN-EBM). It then explores the direct effect and spatial spillover effect of UGS on CEP-T through the Spatial Durbin Model (SDM). The results show that: (1) In terms of the efficiency dimension, UGS can effectively improve CEP at the national, regional, and city levels. CEP improved more strongly at the city level than at the regional and national levels, with 280 cities improving their CEP, and southern cities improving more than northern regions. (2) In terms of the spatial economics dimension, UGS can have a positive impact on local CEP improvement. At the same time, UGS also has a spatial spillover effect, transcending urban boundaries to improve the CEP of neighboring areas. In addition, there is heterogeneity in the improvement of UGS on CEP, with stronger effects in the south and weaker effects in the north. These findings provide important implications for policymakers to enhance low-carbon development and address climate change through UGS.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102513"},"PeriodicalIF":6.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513562","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 trees on thermal comfort in adjacent park and neighborhood in hot-humid climate: A CFD study 湿热气候下树木对邻近公园及社区热舒适影响的CFD研究

IF 6 2区工程技术

Urban Climate Pub Date : 2025-06-28 DOI: 10.1016/j.uclim.2025.102519

Clément Nevers , Jan Carmeliet , Aytaç Kubilay , Dominique Derome

{"title":"Impact of trees on thermal comfort in adjacent park and neighborhood in hot-humid climate: A CFD study","authors":"Clément Nevers , Jan Carmeliet , Aytaç Kubilay , Dominique Derome","doi":"10.1016/j.uclim.2025.102519","DOIUrl":"10.1016/j.uclim.2025.102519","url":null,"abstract":"<div><div>We study the interactions between a park and a residential neighborhood in Singapore with high-fidelity microclimate simulations using Computational Fluid Dynamics (CFD). We reveal the broader spatial influence of trees, with cooling effects extending over distances of up to 100 m, though occasionally accompanied by unintended warming zones. Multifaceted effects of trees include the immediate, localized cooling effect in the planted zone, primarily driven by shading, and a variety of non-local effects influenced by air temperature, relative humidity, and wind speed. Results for this case study reveal that trees can significantly reduce values of the Universal Thermal Climate Index (UTCI), improving thermal comfort levels by up to 10 °C. However, trees can also cause non-local heating effects, increasing UTCI by up to 5 °C in unshaded areas within the park during peak conditions. UTCI reduction mainly comes from the shading effect, as the cooling effect of air temperature reduction is nearly offset by an increase in relative humidity. Wind sheltering caused by trees has a consistent minor negative impact of around +0.5 °C UTCI. We also study the interplay of trees with the presence of open space under lift-up buildings. We show that such nuanced understanding of microclimatic dynamics is essential to correctly plan mitigation strategies within hot-humid climates, emphasizing the importance and need of high-fidelity urban studies.</div><div>These findings underscore the positive and negative impacts of vegetation on urban thermal comfort and highlight the need for advanced heat exposure indices to accurately assess the effectiveness of heat mitigation strategies.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"62 ","pages":"Article 102519"},"PeriodicalIF":6.0,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502394","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