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Research papers on Urban heat islands

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  2. Cities, Climate Change and Urban Heat Island Mitigation: Localising Global Environmental Science

    Jason Corburn · 2009 · Urban Studies · 203 citations

    This paper explores how city planners engaged with global climate scientists to devise contextually relevant strategies to address the urban heat island effect—a potentially dangerous heat event expected to increase along with global warming. Drawing original data from the New York City Regional Heat Island Initiative, a collaborative effort between scientists and urban planners, the paper highlights how global climate science is `localised' as researchers and policy-makers struggle to make technically legitimate and politically accountable decisions. The paper argues that the localisation of global science often involves a process of co-production, where technical issues are not divorced fr

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  3. Balancing conflicting mitigation and adaptation behaviours of urban residents under climate change and the urban heat island effect

    Kayoko Kondo, L. Mabon, Yi-Fan Bi, et al. · 2020 · Sustainable Cities and Society · 96 citations

    Highlights • Cooling behaviours an area of increasing interest under rising heat in cities.• Survey of public in Fukuoka, Japan, assesses cooling behaviour and climate awareness.• Some people use air conditioning with mitigation focus, others emphasise adaptation.• Those emphasising mitigation have lower bills and more likely to engage in other behaviours.• Messaging on air conditioning use and promoting urban greening may enable co-benefits.

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  6. Assessing the Cooling Effect of Blue-Green Spaces: Implications for Urban Heat Island Mitigation

    Pritipadmaja, R. Garg, Ashok K. Sharma · 2023 · Water · 83 citations

    The Urban Heat Island (UHI) effect is a significant concern in today’s rapidly urbanising cities, with exacerbating heatwaves’ impact, urban livelihood, and environmental well-being. This study aims to assess the cooling effect of blue-green spaces in Bhubaneswar, India, and explore their implications for mitigating UHI effects. Satellite images were processed with Google Earth Engine (GEE) to produce information on the blue-green spaces’ land surface temperatures (LST). The Normalised Difference Vegetation Index (NDVI) and Modified Normalised Difference Water Index (MNDWI) were employed to quantify the presence and characteristics of these blue-green spaces. The findings revealed significan

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  7. Urban heat island effect in India: a review of current status, impact and mitigation strategies

    Sahidul Islam, A. Karipot, R. Bhawar, et al. · 2024 · Discover Cities · 75 citations

    The Urban Heat Island (UHI) phenomenon significantly affects us by exacerbating heat discomfort, increased energy consumption, and urban air pollution. The severity of UHI associated with heat waves and heat stress-related mortality is now one of the major concerns, particularly in densely populated cities. Therefore, the significance of the UHI has emerged as a crucial issue due to cities’ fast growth and urban development, necessitating a comprehensive review of the present status of UHI research, particularly concerning regional comparisons. This paper delineates the characteristics of UHI, focusing on its intensity, impact, determining factors, and potential mitigation strategy. It synth

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  10. Modeling the urban heat island mitigation effect of cool coatings in realistic urban morphology

    Nai-Rui Liu, L. Morawska · 2020 · Journal of Cleaner Production · 54 citations

    There are currently more than 400 cities that are subject to the urban heat island (UHI) effect, whose summer temperature can be over 15 °C above the human thermal comfort zone. As the scope of urbanization expands, more people will feel the influence of the UHI effect. Since cool coatings can serve as a mitigation measure against the UHI effect, this research proposes a method that can estimate its mitigation effect in any given region. The main idea of this method is to simulate the function of cool coatings via increasing the albedo values in the Weather Research and Forecasting (WRF) model. The main novelty of this method is that it incorporates detailed land categorization data to simul

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  11. The effect of Urban Heat Island mitigation strategies on outdoor human thermal comfort in the city of Baghdad

    A. M. Salman, Y. Saleem · 2021 · Frontiers of Architectural Research · 43 citations

    Abstract Todays, most Iraqi cities suffer from extremely hot-dry climate for long periods throughout the year. However, most urban patterns that exist inside these cities are not suitable for this harsh conditions and lead to an increase in the value of the Urban Heat Island (UHI) index. Consequently, this will increase outdoor human thermal discomfort as well as energy consumption and air pollution in cities. This study attempts to evaluate the effect of UHI mitigation strategies on outdoor human thermal comfort in three different common types of urban patterns in the biggest and most populated city in Iraq, Baghdad. Three different mitigation strategies are used here – vegetation, cool mat

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  14. Spatio-Temporal Patterns and Drivers of the Urban Heat Island Effect in Arid and Semi-Arid Regions of Northern China

    Jingwen Wang, Lei Lu, Xiaoming Zhou, et al. · 2025 · Remote Sensing · 18 citations

    Investigating the urban heat island (UHI) effect and its driving factors is crucial for supporting future climate mitigation actions and human adaptation strategies. Due to the unique climatic characteristics and vulnerable ecological environment of arid and semi-arid regions, it is valuable to detect the UHI effect in cities in these regions, which have not been fully explored yet. Utilizing moderate-resolution imaging spectroradiometer (MODIS) land surface temperature (LST) data from 2010 to 2020, this study quantified the summer, winter, and annual diurnal mean surface urban heat island intensity (SUHII) of 30 cities in the arid and semi-arid regions of northern China and comprehensively

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  15. Using construction and demolition waste materials to alleviate the negative effect of pavements on the urban heat island: A laboratory, field, and numerical study

    M. Shamsaei, Alan Carter, M. Vaillancourt · 2024 · Case Studies in Construction Materials · 18 citations

    In this study, construction and demolition waste (CDW) materials, including waste clay bricks, concrete, and glass, were used as aggregates of chip seal layers to enhance the reflectivity and cool down the asphalt pavement as an urban heat island (UHI) mitigation policy. UHI is an urban area that has a higher temperature in comparison to its suburbs. As considerable parts of cities are covered with asphalt pavements, their heat absorption and heat release can directly affect the UHI. Four types of chip seal layers, containing CDW aggregates were prepared in this study. The reflectivity and cooling effects of asphalt pavement coated with the developed chip seals were then evaluated with labor

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  16. Microscale Investigation of Urban Heat Island (UHI) in Annaba City: Unveiling Factors and Mitigation Strategies

    B. Sayad, M. Helmi, O. Osra, et al. · 2024 · Sustainability · 17 citations

    Cities are facing significant challenges related to climate change, particularly due to the increasing impact of the Urban Heat Island (UHI) phenomenon. The present study investigated the UHI phenomenon at the microscale in Annaba, Algeria. The research involved a multi-step approach, starting with on-site measurements of urban microclimate parameters, performed in downtown Annaba on 6 July 2023. The UHI intensity was quantified by comparing city-measured temperatures with rural surroundings. Thermal imaging is then used to empirically identify the contributing factors to UHI initiation at the microscale. The study employed the ENVI-met model to analyse mitigation strategies, manipulating pa

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  17. Multidimensional characteristics of urban green space and its impact in mitigating urban heat Island effects: a case study of Guangzhou

    Jin-Meng Zhang, Pei-Hao Wang, Aibo Jin · 2025 · Scientific Reports · 17 citations

    Urban Heat Island (UHI) effect is a significant concern in cities, increasing environmental and living conditions challenges. Urban green spaces are essential in mitigating UHI effects by regulating temperature. However, most studies do not adequately consider the multidimensional characteristics of green spaces in their cooling effects on the UHI. To address this gap, this study systematically investigates the cooling effects of green space by examining global and local mitigation mechanisms, with Guangzhou as a case study. Land surface temperature (LST) data were retrieved using the Mono-Window algorithm to analyze spatial variations in UHI intensity. Green space was further evaluated in t

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  18. Distributional outcomes of urban heat island reduction pathways under climate extremes

    Ali Eyni, Ben Zaitchik, Benjamin F. Hobbs, et al. · 2025 · Scientific Reports · 16 citations

    Global warming and the rise in extreme heat days elevate the risk of heat-related mortalities, particularly in cities due to the Urban Heat Island (UHI) effect and vulnerabilities tied to housing, exposure, and health conditions. City planners can mitigate these effects through urban adaptive actions. UHI mitigation, however, needs to balance several goals: strategies that maximize temperature reduction or minimize their impacts may not be best for cost effectiveness, carbon emissions, environmental amenities, health impacts, or distributional outcomes. Here, we implement a multi-objective robust decision-making tool for heat mitigation—the City-Heat Equity Adaptation Tool (City-HEAT)—to ide

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  19. Natural Ventilation: A Mitigation Strategy to Reduce Overheating In Buildings under Urban Heat Island Effect in South American Cities

    M. Palme, C. Carrasco, Miguel Ángel Gálvez, et al. · 2017 · IOP Conference Series: Materials Science and Engineering · 10 citations

    Urban heat island effect often produces an increase of overheating sensation inside of buildings. To evacuate this heat, the current use of air conditioning increases the energy consumption of buildings. As a good alternative, natural ventilation is one of the best strategies to obtain indoor comfort conditions, even in summer season, if buildings and urban designs are appropriated. In this work, the overheating risk of a small house is evaluated in four South American cities: Guayaquil, Lima, Antofagasta and Valparaíso, with and without considering the UHI effect. Then, natural ventilation is assessed in order to understand the capability of this passive strategy to assure comfort inside th

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  21. The Heat Is on: How Well Are Densely Populated Korean Cities Adapting to Increased Temperatures and Urban Heat Island Effect?

    Suhyun An, Ayşın Dedekorkut-Howes · 2025 · Environments · 9 citations

    Rising temperatures due to climate change are exacerbating the Urban Heat Island effect (UHI). UHI has serious impacts on ecosystems and human health, causes the deterioration of infrastructure and economic loss, decreases air quality, and increases energy consumption. The problem is heightened in densely populated cities. Temperatures are projected to rise more steeply in Korea than global temperatures. This paper focuses on evaluating UHI adaptation strategies of densely populated Korean cities Seoul, Busan, and Daegu through a policy review. The comparative analysis shows that, in terms of heatwave and UHI policies, Daegu is ahead as the only city with a dedicated heatwave plan. As the ho

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  22. On the Role of the Building Envelope on the Urban Heat Island Mitigation and Building Energy Performance in Mediterranean Cities: A Case Study in Southern Italy

    Alessandra Martinelli, F. Carlucci, Francesco Fiorito · 2024 · Climate · 9 citations

    The urban heat island (UHI) effect is one of the largest climate-related issues concerning our cities due to the localized temperature increase in highly urbanized areas. This paper aims to investigate the impact of UHI mitigation techniques in promoting climate resilience, by reducing urban air temperatures and cooling energy consumption in buildings. To this end, four mitigation solutions regarding the building envelope—green roofs, green walls, cool roofs, and cool walls—were investigated for the city of Bari in Southern Italy and compared with the current baseline scenario. Hence, five scenarios were simulated—using the ENVI-met microclimate software—during three representative summer da

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  23. Quantifying the effect of green-roof and urban green infrastructure ratio on urban heat island mitigation -semi-arid climate

    S. Sahnoune, N. Benhassine, F. Bourbia, et al. · 2021 · Journal of Fundamental and Applied Sciences · 7 citations

    Green Roof (GR) is one of the most applied strategies to Mitigate Urban Heat Island (UHI) recommended for sustainable cities. This research aims to examine and evaluate the effect of the GR/UGI ratio on UHI mitigation, creating Urban Cool Island (UCI). The study was carried out at Constantine, situated in the East part of Algeria, characterized by a semi-arid climate with high summer solar radiation intensity. An urban climate analysis was conducted during the hottest period of the year by means of remote sensing data using ArcGIS 10.2 platform. The results displayed that vegetation, urban density, and topography strongly affect UHI. Furthermore, other finding results in this research show t

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  24. The Relationship Between Urban Morphology and the Urban Heat Island Effect: A Study of Cooling Strategies in Urbanized Areas

    Yixi Kong · 2025 · Applied and Computational Engineering · 6 citations

    With more and more cities experiencing urbanisation, the issue of Urban Heat Island (UHI) effects has become a concern in urban areas worldwide. This paper evaluates the impact of urban morphology, particularly urban expansion and densification, on the UHI effect, and examines the trajectory of UHI in Chinese cities. The 2D Layout BCR (Building Coverage Ratio) model shows that horizontal expansion tending to increase impervious surfaces, and the increased proportion of impervious surfaces will lead to more heat retention, while the physical air barrier in densely built environments can worsen the UHI effect by obstructing the natural ventilation of air. The longitudinal data of urban plannin

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