Green infrastructure and its influence on urban heat island, heat risk, and air pollution: A case study of Porto (Portugal)

Journal of Environmental Management, Год журнала: 2025, Номер 376, С. 124446 - 124446

Опубликована: Фев. 8, 2025

Green infrastructure plays a fundamental role in mitigating the effects of urban heat island. Vegetation may trap particulates and absorb pollutants like ozone, thus improving air quality. Understanding how green reduces island pollution within specific zones can provide valuable insights for better design, improved environmental quality, increased resident well-being. This study addresses impact deprivation on effects, pollution, heat-related health risks Porto, Portugal. The employs monitoring network to analyse spatial distribution temperature humidity throughout city, although with gaps coverage. With focus this paper uses data from Porto Digital's between 2019 2022. Heat risk index assesses vulnerability by integrating land surface temperature, cover, demographic through remote sensing. mapping is conducted quantify vegetation elements area. analysis 2022 reveals that intensity more pronounced during summer at night. Approximately 32.6% areas high index, indicating risks. finds limited exacerbates vulnerability, particularly socioeconomically disadvantaged areas. Additionally, persistent hotspots, including elevated levels ozone particulate matter, contribute These findings underscore need into planning mitigate improve resilience, promote justice.

Язык: Английский

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Mitigation potential of urban greening during heatwaves and stormwater events: a modeling study for Karlsruhe, Germany

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 13, 2025

Abstract Climate change is increasing the frequency and intensity of urban heat islands stormwater flooding. In order to mitigate these threats cities are turning toward green infrastructure restore hydrologic cycle in a way that increases ecosystem services provided by trees. Strategically designed can runoff volume rainfall interception through tree canopies redirect impervious into bioswales promote infiltration. addition, greens extreme via evapotranspiration shading. Here we applied i-Tree HydroPlus model German city Karlsruhe its twenty-seven districts with varying initial conditions cover analyze potential for both mitigation during dry wet periods throughout 5-year period. After analyzing drainage conditions, used simulate scenario each district restored hydrology at 30%. Regarding trade-offs between mitigation, results confirm soils before storm events lead greater reduction 10%, prior heatwaves resulted evaporative cooling. Compared current scenarios decreasing number hours (Heat Index > 31 °C) per year on average 64.5%, reduce 58% across all districts. Thus, our simulation show investing greener infrastructure, has positive impacts microclimate hydrology. Finally, discuss synergies investigated management options as well transferability other cities.

Язык: Английский

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Optimizing human thermal comfort and mitigating the urban heat island effect on public open spaces in Rome, Italy through sustainable design strategies

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Авг. 27, 2024

The climate affects how a city's outdoor spaces are utilized. It is more likely that people will use and appreciate public areas designed for pedestrian use, such as parks, squares, streets, foot-cycle pathways, when they provide comfortable healthy environment. A predicted increase in global temperature has made the uncomfortable, especially during summer heat stress strengthened anticipated. This phenomenon severe urban areas, often affected by Urban Heat Island (UHI) effect. Since spatial characteristics of city influence its climate, design can be deployed to mitigate combined effects change UHI. research conducted study UHI effect on thermal comfort an open space Rome (Italy) aims at identifying implementing methodology designers follow reduce impact islands space. based concept adopting Sustainable Development Goals guidelines; it investigates UHI's examines microclimatic conditions perception users through PET, PMV PPD values, were assessed simulations with ENVI-MET software. thus proposes redesign site Rome, masterplan sustainable principles, aimed improving site. solution was then validated ex post simulations.

Язык: Английский

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Evaluation of the intensity of urban heat islands during heat waves using local climate zones in the semi-arid, continental climate of Tehran

Urban Climate, Год журнала: 2024, Номер 56, С. 102079 - 102079

Опубликована: Июль 1, 2024

Язык: 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, Год журнала: 2023, Номер 12(8), С. 1568 - 1568

Опубликована: Авг. 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.

Язык: Английский

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A conceptual framework to mitigate the adverse effects of surface urban heat islands through urban acupuncture: a two-phase scenario of diagnosis and prescription at the neighborhood scale

Frontiers in Environmental Science, Год журнала: 2024, Номер 12

Опубликована: Янв. 29, 2024

Rising temperatures, a major global environmental challenge, negatively impact health, the environment, society, and economy. Surface Urban Heat Islands (SUHI), exacerbated by urbanization climate change, intensify vulnerabilities for urban areas residents. planning design aime to reduce these through large-scale small-scale interventions. However, addressing significance of capillary effects resulting from interventions bottom-up community engagement is important. acupuncture (UA) an emerging approach in contemporary that focuses on mitigate SUHIs at level. This study develops framework mitigating impacts UA implementation design. The proposed consists two key phases: diagnosis prescription. During phase, we analyzed heat-vulnerable points identify indicators contributing development exacerbation SUHIs. Then, employed Matrix Cross Impact Multiplications Applied Classification (MICMAC) technique comprehensively assess 75 influential related structure across various aspects scales, focusing mesoscale. Among them, 30 leading were identified, which morphological emerged as significant catalysts. Moving prescription developed UA-based called “5 Wh Question” addresses five fundamental questions: why, who, what, how, where. Our findings can provide comprehensive solutions policymakers planners address identified points.

Язык: Английский

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Machine Learning in Modeling Urban Heat Islands: A Data-Driven Approach for Kuala Lumpur

Earth Systems and Environment, Год журнала: 2025, Номер unknown

Опубликована: Фев. 7, 2025

Язык: Английский

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Multi-Hazards and Existing Data: A Transboundary Assessment for Climate Planning

Land, Год журнала: 2025, Номер 14(3), С. 548 - 548

Опубликована: Март 5, 2025

Many regions worldwide are exposed to multiple omnipresent hazards occurring in complex interactions. However, multi-hazard assessments not yet fully integrated into current planning tools, particularly when referring transboundary areas. This work aims enable spatial planners include their climate change adaptation measures using available data. We focus on a set of (e.g., extreme heat, drought, landslide) and propose four-step methodology (i) harmonise existing data from different databases scales for assessment mapping (ii) read identified bundles homogeneous territorial The methodology, whose outputs replicable other EU contexts, is applied the illustrative case Northeast Italy. results show significant difference between with ‘dichotomous’ behaviour (shocks) those more nuanced one (stresses). harmonised maps single represent new piece knowledge our territory since, date, there no comparable this level definition understand hazards’ distribution interactions study does present some limitations, including putting together remarkable hazards.

Язык: Английский

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Urban heat islands and energy consumption patterns: Evaluating renewable energy strategies for a sustainable future

Energy Reports, Год журнала: 2025, Номер 13, С. 3760 - 3772

Опубликована: Март 27, 2025

Язык: Английский

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Effects of different tree crown shapes and planting patterns on thermal comfort in El-Goli Park, Tabriz

Arboricultural Journal, Год журнала: 2025, Номер unknown, С. 1 - 17

Опубликована: Апрель 16, 2025

Язык: Английский

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