Climate-adaptive landscape design: Microclimate and thermal comfort regulation of station square in the Hokuriku Region, Japan

Xiao, Jing; Yuizono, Takaya

doi:10.1016/j.buildenv.2022.108813

Cited by 31 publications

(17 citation statements)

References 60 publications

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“…Using PMV as a thermal sensation evaluation index for outdoor thermal comfort has been proved in many studies, e.g., thermal comfort issues in an urban station square were investigated with the PMV thermal index in the Hokuriku region in Japan [ 52 ]. The thermal sensation in the open spaces was evaluated in the Faculty of Engineering, Assiut University, Egypt through PMV [ 53 ].…”

Section: Methodsmentioning

confidence: 99%

“…Personal human parameters are derived from the ISO7730 standard ( Table 3 ), which is the most appropriate method at present, although the mannequin cannot represent all inhabitants [ 55 , 56 ]. According to previous studies, PMV range can be extended from very cold to very hot (−4, +4), with 0 representing a neutral state [ 52 ]. However, the PMV can be above and below the range (−4, +4) as it is a mathematical function of the local climate during most literature applications [ 55 ].…”

Section: Methodsmentioning

confidence: 99%

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Supporting Design to Develop Rural Revitalization through Investigating Village Microclimate Environments: A Case Study of Typical Villages in Northwest China

Xin

Zhao

Wang

et al. 2022

IJERPH

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China has the largest number of villages in the world, and research on rural microclimate will contribute to global climate knowledge. A three-by-three grid method was developed to explore village microclimates through field measurement and ENVI-met simulation. A regression model was used to explore the mechanistic relationship between microclimate and spatial morphology, and predicted mean vote (PMV) was selected to evaluate outdoor thermal comfort. The results showed that ENVI-met was able to evaluate village microclimate, as Pearson’s correlation coefficient was greater than 0.8 and mean absolute percentage error (MAPE) was from 2.16% to 3.79%. Moreover, the air temperature of west–east road was slightly higher than that of south–north, especially in the morning. The height-to-width ratio (H/W) was the most significant factor to affect air temperature compared to percentage of building coverage (PBC) and wind speed. In addition, H/W and air temperature had a relatively strong negative correlation when H/W was between 0.52 and 0.93. PMV indicated that the downwind edge area of prevailing wind in villages was relatively comfortable. This study provides data support and a reference for optimizing village land use, mediating the living environment, and promoting rural revitalization.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Supporting Design to Develop Rural Revitalization through Investigating Village Microclimate Environments: A Case Study of Typical Villages in Northwest China

Xin

Zhao

Wang

et al. 2022

IJERPH

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“…Thermal indices have been widely used to evaluate the role of various design layouts on thermal perception [27]. Physiological equivalent temperature (PET) and the universal thermal climate index (UTCI) are mainly used in thermo-physiological assessment indices.…”

Section: Of 22mentioning

confidence: 99%

A Greening Strategy of Mitigation of the Thermal Environment for Coastal Sloping Urban Space

Zhang

Liu

et al. 2022

Sustainability

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Greening can usually have a cooling effect on urban space; but is this law also applicable to coastal sloping urban space? The coastal urban space of Qingdao Haizhifeng Square, with a sloping topography, was the area we selected to study. The study area contained two parts: a coastal green space and a residential area. ENVI-met was used to create six scenarios. Different lawns, black pine and ash were planted in the two areas to study the cooling effect. The results showed that the closer the area was to the sea, the better the thermal comfort. In both the coastal green area and the residential area, trees increased the PET of the site, and the higher the LAI of the trees, the more obvious the thermal effect. At 15:00, the hottest time during the summer, the highest PET at pedestrian height was lowest in the scenario without trees, reaching 28.3 °C, and the highest was with full ash, reaching 34.3 °C. At the same time, the average difference in PET between the two scenarios was 1.4 °C. The highest PET at pedestrian height was generated in the area of the building away from the sea breeze, especially in the case of the sloping topography behind it or dense street trees on the urban road. Finally, it was concluded that, in urban spaces with a coastal slope topography, lawns should be planted in the coastal green part and low LAI trees in residential areas, and shade trees should not be planted on the coastal walkway. This afforestation strategy can provide a basis to formulate a strategy for promoting the design of regions with similar geographical and climatic conditions in the future.

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“…Wang et al [37] examined how tree characteristics including crown radius and trunk height relate to PET reduction, and determined that taller trees led to lower PET values. Other studies have looked at indicators like predicted mean vote [38][39][40] and universal thermal climate index (UTCI) [19,41] to assess outdoor thermal conditions. As there is no universally accepted best metric, combinations of them have also been used (e.g.…”

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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Climate-adaptive landscape design: Microclimate and thermal comfort regulation of station square in the Hokuriku Region, Japan

Cited by 31 publications

References 60 publications

Supporting Design to Develop Rural Revitalization through Investigating Village Microclimate Environments: A Case Study of Typical Villages in Northwest China

Supporting Design to Develop Rural Revitalization through Investigating Village Microclimate Environments: A Case Study of Typical Villages in Northwest China

A Greening Strategy of Mitigation of the Thermal Environment for Coastal Sloping Urban Space

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

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