Optimizing pedestrian thermal comfort in urban street canyons for summer and winter: Tree planting or low-albedo pavements?

Sustainable Cities and Society, Journal Year: 2025, Volume and Issue: 120, P. 106143 - 106143

Published: Jan. 12, 2025

Language: Английский

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Urban microclimate simulations based on GIS data to mitigate thermal hot-spots: Tree design scenarios in an industrial area of Florence

Building and Environment, Journal Year: 2023, Volume and Issue: 245, P. 110854 - 110854

Published: Sept. 28, 2023

Surface thermal hot-spot areas, and especially industrial commercial mainly characterized by high artificial surfaces low vegetation coverages, consistently affect the livability in urban areas. In this study, one of warmest areas Florence (Italy), main agri-food market was selected to perform three tree design mitigation scenarios: a) intervention using 5-meter trees (T5), b) with 10-meter (T10) c) alternating 5- (T5-10). The methodology based on microclimate monitoring simulation characterization, involving open GIS data from different sources spatial software tools (QGIS ENVI-met software). Thermal patterns (air Temperature, AT; Mean Radiant MRT; ST; Universal Climate Index, UTCI) were simulated at 9 a.m. 3 p.m. scenarios then compared through a non-parametric statistical test ex-ante situation. results revealed that 10% increase canopy road had significant impact environment, showing greatest effect surface level. cooling observed during afternoon (3 p.m.) considering T10 scenario: MRT, ST UTCI decreased 6.0 °C, 4.1 °C 1.7 respectively when compare These findings provide very useful information for planners landscape architects plan targeted interventions aimed mitigating anomalies

Language: Английский

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Thermal Comfort Assessment in Urban Green Spaces: Contribution of Thermography to the Study of Thermal Variation between Tree Canopies and Air Temperature

Land, Journal Year: 2023, Volume and Issue: 12(8), P. 1568 - 1568

Published: Aug. 8, 2023

Understanding the thermal effects of different urban patterns that constitute today’s landscapes is critical to development resilience climate change. This article aims assess efficiency green spaces in regulation. Through thermography, we explored interaction between air temperature and spatial components within these environments. comparative analysis involving a UAV, studied relationship temperatures at varying altitudes tree canopies. The results revealed significant differences distribution impervious areas with buildings spaces. These findings provide important information for assessing comfort mitigating impact extreme heat events. During summer months, spaces, due shade enhanced absorption solar radiation by trees, exhibited lower compared areas. However, winter, displayed higher temperatures, attributable their retention capacity. study contributes existing knowledge base providing an in-depth examination across layers atmosphere. Our underscore crucial role cover regulation, offering valuable sustainable planning. insights are particularly relevant design more comfortable resilient environments response climatic variations crafting tree-planting strategy Mediterranean cities, area where impacts change becoming increasingly apparent.

Language: Английский

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The cooling effect of trees in high-rise building complexes in relation to spatial distance from buildings

Sustainable Cities and Society, Journal Year: 2024, Volume and Issue: 114, P. 105737 - 105737

Published: Aug. 14, 2024

Language: Английский

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Geospatial Analysis for Promoting Urban Green Space Equity: Case Study of Detroit, Michigan, USA

Urban forestry & urban greening, Journal Year: 2025, Volume and Issue: unknown, P. 128716 - 128716

Published: Feb. 1, 2025

Language: Английский

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Microclimate Performance Analysis of Urban Vegetation: Evidence from Hot Humid Middle Eastern Cities

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 521 - 521

Published: Feb. 8, 2025

Urban heat islands (UHIs) pose a growing challenge in rapidly urbanizing areas, necessitating effective mitigation strategies to enhance environmental sustainability and human well-being. This study examined the role of vegetation regulating urban microclimates, focusing on its ability mitigate effects UHIs, promote thermal comfort, esthetics. The drew existing research that employed spatial analysis Geographic Information Systems (GIS) explore relationship between metrics reductions surface temperature. Municipal initiatives Khobar, Saudi Arabia, including tree-planting programs street humanization projects, aimed improve esthetics pedestrian experiences. Although these efforts enhanced livability, they lacked comprehensive ecological perspective, emphasizing need for integrate resilience, broader goals. demonstrated societal benefits activities linked plans achievement Sustainable Development Goals (SDGs). results highlighted importance incorporating green infrastructure development air quality, overall livability. paper proposed framework sustainable design, offering practical insights policymakers planners working create resilient, environmentally conscious communities extreme climates.

Language: Английский

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Correlations of Spatial Form Characteristics on Wind–Thermal Environment in Hill-Neighboring Blocks

Sustainability, Journal Year: 2024, Volume and Issue: 16(5), P. 2203 - 2203

Published: March 6, 2024

The spatial forms of hill-neighboring blocks and the wind–thermal environment are crucial components urban planning ecology. Understanding their correlation is significant for creating a healthy community enhancing sustainable level buildings systems. Therefore, Jinan, multi-mountainous city in China, taken as research area, ideal model built based on categories all these block types by aerial imagery semantic segmentation algorithm. Then, we use CFD simulation software PHOENICS evaluation system weighted random forest to simulate assess environment. Ultimately, correlations specific mathematical equations between form indicators obtained parametric method. results demonstrate that interface density near-hill side hill surface roughness most related overall variation has distinct influence proportion breeze area PMV. relationship determined herein can provide strategic recommendations decision makers optimizing outdoor air flow thermal comfort pedestrians, which helps create comfortable cities.

Language: Английский

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MITIGATING THE URBAN HEAT ISLAND EFFECT: Thermal Performance of Shade-Tree Planting in Downtown Los Angeles

Published: Aug. 28, 2024

As urban areas expand and populations grow, environmental challenges such as the heat island effect, air pollution, light pollution intensify. The effect exacerbates extreme conditions, leading to prolonged periods of unhealthy hazardous environments for both humans other species. This study investigates thermal environment associated with focusing on role trees in mitigating this issue. Using ENVI-met simulations, examines various factors influencing tree cooling effectiveness, including seasonal variations, building shading, transpiration rates, placement, spacing. A new tree-planting strategy is developed based these findings, aiming enhance comfort. compares sidewalks under scheme existing arrangement across different months. Results indicate that reduces UTCI temperatures by 2.2°C hottest day, 0.97°C coldest 1.52°C annually area Los Angeles, demonstrating benefits hot weather outweigh potential drawbacks cold weather, highlighting its mitigate effect.

Language: Английский

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Effect of Roadside Tree Planting Characteristics on Improving Urban Thermal Environment† - Based on Observations of Temperature and Humidity of Roadside Trees in Daegu Metropolitan City -

Journal of the Korean Institute of Landscape Architecture, Journal Year: 2024, Volume and Issue: 52(4), P. 32 - 44

Published: Aug. 1, 2024

Language: Английский

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MITIGATING THE URBAN HEAT ISLAND EFFECT: The Thermal Performance of Shade-Tree Planting in Downtown Los Angeles

Sustainability, Journal Year: 2024, Volume and Issue: 16(20), P. 8768 - 8768

Published: Oct. 11, 2024

The intensifying urban heat island (UHI) effect presents a growing challenge for environments, yet there is lack of comprehensive strategies that account how multiple factors influence tree-cooling effectiveness throughout the year. While most studies focus on effects individual factors, such as tree shading or transpiration, over specific time periods, fewer address combined impact various factors—such seasonal variations, building shading, transpiration rates, placement, and spacing—on cooling across different seasons. This study fills this gap by investigating thermal environment in downtown Los Angeles through ENVI-met simulations. A novel tree-planting strategy was developed to enhance performance adjusting positions based these key factors. results show new reduces Universal Thermal Climate Index (UTCI) temperatures 2.2 °C hottest day, 0.97 coldest 1.52 annually. also evaluates negative colder months, demonstrating that, cities with climates similar Angeles, benefits hot weather outweigh drawbacks during winter. These findings provide method optimizing placement planning, contributing more effective UHI mitigation strategies.

Language: Английский

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