气候变化领域集成服务门户(CCPortal): Effect of Street Asymmetry, Albedo, and Shading on Pedestrian Outdoor Thermal Comfort in Hot Desert Climates

CCPortal

DOI	10.3390/su16031291
	Effect of Street Asymmetry, Albedo, and Shading on Pedestrian Outdoor Thermal Comfort in Hot Desert Climates
	Necira, Hakima; Matallah, Mohamed Elhadi; Bouzaher, Soumia; Mahar, Waqas Ahmed; Ahriz, Atef
发表日期	2024
EISSN	2071-1050
起始页码	16
结束页码	3
卷号	16 期号:3
英文摘要	Improving urban walkability in the face of climate change is a critical challenge for urban designers. Street design strategies can mitigate heat stress and enhance pedestrian livability. Most previous studies conducted in hot climates recommend adopting deep canyons to improve summer conditions, overlooking the potential improvement of wide streets as essential structural elements of the urban fabric. This study was conducted in Biskra city, southern Algeria, where several mitigation strategies were applied to 'Emir Abdelkader Boulevard', as the main structural street inside the city, to create an optimal street model for arid climates. Five scenarios were developed based on three criteria: (Sc1) asymmetric profile northeast side (NES) > southwest side (SWS); (Sc2) asymmetric profile SWS > NES; (Sc3) cool paving; (Sc4) horizontal shading; and(Sc5) shading with a linear tree arrangement. ENVI-met software version 5.1.1 and the RayMan model were used to estimate the local climate conditions and outdoor thermal comfort levels based on the physiological equivalent temperature (PET). All scenarios reduced PET values across the street, with optimal reductions of -2.0( degrees)C, -3.1 C-degrees, -1.3(degrees)C, -1.7 C-degrees, and -1.2 C-degrees in Sc1, Sc2, Sc3, Sc4, and Sc5, respectively. Concerning pedestrian areas, the optimal results durations were at the southwest side below the arcades' sidewalks during peak hours: Sc2, Sc3, Sc4, Sc5 (2.2 C-degrees-3 H, 2.3 C-degrees-3 H, 2.4 C-degrees-3 H, 2.5 C-degrees-2 H). Sc1 performed best during daytime hours on the northeast side. The utilizing of these results can strongly help urban planners and landscape architects in creating climate-responsive streets that enhance citizens' quality of life.
英文关键词	boulevard; heat stress; mitigation strategies; physiological equivalent temperature; spatial configuration; ENVI-met; walkability
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS记录号	WOS:001161079900001
来源期刊	SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303209
作者单位	Universite Mohamed Khider Biskra; University of Liege; Aror University of Art, Architecture, Design & Heritage; Echahid Cheikh Larbi Tebessi University
推荐引用方式 GB/T 7714	Necira, Hakima,Matallah, Mohamed Elhadi,Bouzaher, Soumia,et al. Effect of Street Asymmetry, Albedo, and Shading on Pedestrian Outdoor Thermal Comfort in Hot Desert Climates[J],2024,16(3).
APA	Necira, Hakima,Matallah, Mohamed Elhadi,Bouzaher, Soumia,Mahar, Waqas Ahmed,&Ahriz, Atef.(2024).Effect of Street Asymmetry, Albedo, and Shading on Pedestrian Outdoor Thermal Comfort in Hot Desert Climates.SUSTAINABILITY,16(3).
MLA	Necira, Hakima,et al."Effect of Street Asymmetry, Albedo, and Shading on Pedestrian Outdoor Thermal Comfort in Hot Desert Climates".SUSTAINABILITY 16.3(2024).