Modeling the relationship between the geometric characteristics of urban green spaces and thermal comfort: The case of Adana city

ÇİLEK, Müge ÜNAL; Uslu, Cengiz

doi:10.1016/j.scs.2022.103748

Cited by 15 publications

(8 citation statements)

References 54 publications

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“…Research studies recommend testing and developing innovative approaches for climate change adaptation and mitigation through incorporating UGS. In addition, it has been proven that UGS improve pedestrians' thermal comfort especially with the increase in shading ratio [70][71][72]. The present study indicates that the Ws percentage has decreased between 19.4% and 25% for different tree percentages across the three climate scenarios, which was similarly represented by [73].…”

Section: Discussionsupporting

confidence: 59%

Urban Green Systems for Improving Pedestrian Thermal Comfort and Walkability in Future Climate Scenarios in London

Taher,

Elsharkawy,

Rashed

2024

Buildings

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The purpose of this research is to investigate the thermal impact of urban green systems (UGS) (trees and living facades) and high albedo pavements on reducing the urban heat island (UHI) effect in London at the pedestrian street level. The research assesses the impact of UGS by suggesting practicable urban greenery-covering densities (25% and 50%) and using high albedo pavement in current and future climatic scenarios (2050 and 2080). This approach is intended to encourage pedestrians to walk longer distances for longer durations during the warmer months, following the Transport for London’s (TfL) 2017 Healthy Streets initiative. The research seeks to measure the advantages and assess the possible impact on the comfort and activities within urban streets. The study adopts a quantitative research design using ENVI-met modelling and questionnaires. Simulation results, the subject of this paper, confirmed that, across three climatic scenarios, the optimal UGS for thermal comfort is 50% trees followed by 25% trees, dependent on street orientation and solar access. Living facades (LF) with 25% and 50% covering had no discernible effect on the comfort of pedestrians, whereas high albedo pavement increases heat stress.

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Section: Discussionsupporting

confidence: 59%

Urban Green Systems for Improving Pedestrian Thermal Comfort and Walkability in Future Climate Scenarios in London

Taher,

Elsharkawy,

Rashed

2024

Buildings

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“…Based on the processing methods for boundary conditions in relevant literature and drawing on previous experience [39,49], we used simple forcing to set the boundary conditions in the software. The real-time meteorological data shown in Figure 2 were also applied to the boundary setting and validation of subsequent models.…”

Section: Model Initializationmentioning

confidence: 99%

The Effect of Greening Layout on Microclimate in Urban Residential Areas in Hot Summer–Cold Winter Zones

Lu,

Gao,

Jiang

et al. 2023

Atmosphere

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Appropriate greening design can enhance the microclimate of residential areas. This study investigated different greening cases for residential buildings in hot summer–cold winter zones. Four sorts of greening layouts were tested in a residential area in Chongqing, China. Arbor–grass mix and arbor–shrub–grass mix showed effective cooling and humidifying effects, and were chosen for further study using the ENVI-met model. The simulations were conducted in Chongqing, comparing sixteen greening cases for determinant and enclosed building forms. Results indicate that the greening design for determinant layout should give priority to ensuring the greening area and shortening the distance from the sidewalk. While enclosed layout should concentrate greening in dense populations, using arbor–shrub–grass mix to improve the wind environment. In cases where the distribution of arbors and shrubs covers a ratio of 7:4, constituting 30% of the overall green space, there is a reduction in environmental temperature by 1.4 °C and in PET by 4.8 °C. This study provides the optimal greening layout for two types of residential areas in China’s hot summer–cold winter zones, guiding landscape construction in these residential areas to optimize the microclimate.

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“…Unlike the prevalent focus on tree-planting in residential and commercial neighborhoods, it is also important to recognize the need for post-industrial revitalization via thermal reduction strategies as a currently unmet challenge. Diversifying our approaches to urban environmental challenges highlights the importance of this lesser-explored avenue [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…In Singapore, Liu et al [32] concluded that increased planting density of smallcrowned trees improves cooling efficacy, leading to urban cool islands. Prior research has examined the impact of various tree species on enhancement of outdoor thermal comfort in different climates, including tropical [15], sub-tropical [33], and Mediterranean [9]. However, there remains a notable gap in the understanding of vegetation types and their cooling effects in arid desert climates.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the effects of different tree species on enhancing outdoor thermal comfort in a post-industrial landscape

Vatani,

Kiani,

Mahdavinejad

et al. 2024

Environ. Res. Lett.

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A frequently emphasized strategy to reduce the burden of heat in cities across the world is the implementation of street trees. Here, we examine the effects of deciduous and coniferous tree deployment on meteorological variables and pedestrian themal comfort through analysis of the new dynamic thermal comfort (dPET) index, using the latest version of the computational fluid dynamics model ENVI-met. We performed on site observational measurements of air temperature (Ta), relative humidity (Rh), wind speed (Ws), and mean radiant temperature (MRT) at 5 different locations on the hottest day of summer 2023, in a post-industrial urban landscape located in Tehran, Iran. Observations were used to evaluate ENVI-met simulation performance and served as a baseline against which sensitivity experiments – based on a minimum (35%) and maximum (75%) intervention scenario for deciduous and coniferous trees – were compared against. Our analysis indicates that 35% and 75% deployment reduced Ta by 1.2°C and 4.2°C, respectively, for deciduous tree species, compared to a 0.9°C and 3.1°C reduction for coniferous species, during the hottest day of summer 2023. The maximum deployment scenario decreased MRT by approximately 60°C and 43°C for deciduous and coniferous tree deployment, respectively. The maximum tree deployment scenario decreased dPET by nearly 16°C and 14°C for deciduous and coniferous trees, respectively, during the time of day that diurnal heating is maximized. Our findings highlight micrometeorological and personalized thermal comfort effects associated with variable tree species type and extent through examination of a pedestrian's ambulatory experience across diverse urban microclimates in a region of the world that is particularly understudied.

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Modeling the relationship between the geometric characteristics of urban green spaces and thermal comfort: The case of Adana city

Cited by 15 publications

References 54 publications

Urban Green Systems for Improving Pedestrian Thermal Comfort and Walkability in Future Climate Scenarios in London

Urban Green Systems for Improving Pedestrian Thermal Comfort and Walkability in Future Climate Scenarios in London

The Effect of Greening Layout on Microclimate in Urban Residential Areas in Hot Summer–Cold Winter Zones

Evaluating the effects of different tree species on enhancing outdoor thermal comfort in a post-industrial landscape

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