Urban outdoor thermal perception in hot arid Beer Sheva, Israel: Methodological and gender aspects

Cohen, Pninit; Shashua‐Bar, Limor; Keller, Reut; Gil-Ad, Ronnie; Yaakov, Yaron; Lukyanov, Victor; Bar, Pua; Tanny, Josef; Cohen, Shabtai; Potchter, Oded

doi:10.1016/j.buildenv.2019.106169

Cited by 53 publications

(26 citation statements)

References 55 publications

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“…Ideally, the study would have relied on meteorological data from local weather stations, which take into account most of the aspects illustrated in Fig. 1, including the sky view factor (Cohen et al, 2019). However, the urban weather data were not available for the selected cities.…”

Section: Strength and Limitations Of The Studymentioning

confidence: 99%

Evaluating the wind cooling potential on outdoor thermal comfort in selected Iranian climate types

Roshan

Moghbel

Attia

2020

Journal of Thermal Biology

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Wind is one of the main factors affecting people's outdoor thermal sensation. Ongoing urbanization and urban densification are transforming the urban climate and complicating the pedestrian-level wind environment. Therefore, the main aim of this research is to evaluate the potential wind-cooling effect on human outdoor thermal conditions. Accordingly, the current research attempts determine the best wind directions for thermal comfort at the studied stations and how these factors will be changed under the effects of global warming. Outdoor thermal conditions were modeled based on the physiologically equivalent temperature (PET) thermal index using RayMan software for the decades of the 2000s and the 2040s in different climate types of Iran (Csb, BWh, Csa, and BSh) To estimate the potential cooling effect of wind, the PET was calculated (1) under actual wind conditions, and (2) under calm wind (0.05 m/s) conditions. Then, the ΔPET for these two conditions, which indicates the cooling potential effect (CPE) of the wind, was calculated for four representative stations (Ardebil, Bandar Abbas, Gorgan, and Shiraz). In comparison with the 2000s, the results indicated that by the 2040s, the predicted wind cooling potential will have increased in Ardebil, Shiraz, Bandar Abbas and Gorgan (CPE of 13.2 • C, 13.1 • C, 11.2 • C, and 11 • C, respectively). Based on the overall average of two climate change scenarios (A2 and B1) used in this study, the occurrence of "comfortable" conditions by the 2040s will have increased in Bandar Abbas, Shiraz, and Ardebil by 1.1%, 0.4%, and 0.3%, respectively, while it will have decreased in Gorgan by 1.5%. Accounting for the cooling effect of wind, the comfort cooling potential of wind is predicted to rise by an average of 1.6 • C in the 2040s compared with the 2000s in all the studied stations. Therefore, this will affect the microclimates positively and could reduce the urban heat island effects.

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Section: Strength and Limitations Of The Studymentioning

confidence: 99%

Evaluating the wind cooling potential on outdoor thermal comfort in selected Iranian climate types

Roshan

Moghbel

Attia

2020

Journal of Thermal Biology

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“…Results demonstrate a close similarity of heat stress levels in almost all measurement points during July and August at daylight hours. [19], (b) [13]. The assessment of PET in July and August, shows that the July averages are higher than August during the daytime in all the measurement points ( Figure 5) with PET ave.July = 41 • C, PET ave.August = 36.2 • C. This decrease in August is mainly due to the wind velocity, which influence the level of the heat stress.…”

Section: Svf and Thermal Comfort Levels Assessment Heat Stress Level'mentioning

confidence: 90%

“…Potchter et al (2013) studies combined effect of urban warming and global warming in the desert city of Beer Sheva (Israel) and proved their noticeable impact using the PET and Discomfort Index (DI) [12]. Some years later Cohen et al (2019) assessed the urban outdoor perception in the same city and suggested modified PET ranges between 17 • C and 26 • C (arid climate) which is wider than Mediterranean and hot, humid climates [13]. In Cairo, Egypt, Elnabawi et al (2016) evaluated the thermal perception of outdoor urban spaces and indicated that the preferred temperatures were 29 • C PET in summer and 24.5 • C PET in winter [14].…”

Section: Literature Reviewmentioning

confidence: 99%

Assessment of the Outdoor Thermal Comfort in Oases Settlements

et al. 2020

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Oases throughout the world have become important ecosystems to replenish food and water supplies. The Saharan Oases exist above the largest underground water supplies in the World. In North Africa, oases witness significantly growing populations in the oasis towns and receive thousands of tourists yearly. In oasis settlements, the majority of the population spends most of the time outdoors, in extremely hot conditions; however, few studies have investigated urban outdoor thermal comfort conditions. Therefore, this study aimed to assess thermal comfort in the Tolga Oasis Complex and test the validity of the 'oasis effect' concept. The methodology is based on comparative field measurement and calculation approaches in the heart of Tolga Palm Grove and in different urban settlements. Results indicate highest heat stress levels (Physiologically Equivalent Temperature (PET) index) in the oases Palm Grove in July, PET = 41.7 • C, and urban settlements, PET = 40.9 • C. Despite the significant difference between the old and new settlement fabrics, our measurements and calculation did not identify any noticeable variation of thermal comfort. Thus, the oasis effect on the outdoor thermal comfort was insignificant (during July and August 2018). Finally, the study discusses ways to improve outdoor spaces design and relieve heat stress in the settlements of Tolga.

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“…The tools and methods used may also influence the research outcomes of outdoor thermal comfort studies. Cohen et al (2019) used field surveys in their investigation of outdoor thermal perceptions in the hot, arid climate of Beer Sheva, Israel [100]. The study investigated the current assessment method for subjective thermal sensation, as well as sought to modify the thermal perception scale using the PET index.…”

Section: Studying the Outdoor Environment: Methods And Limitationsmentioning

confidence: 99%

Behavioural Perspectives of Outdoor Thermal Comfort in Urban Areas: A Critical Review

Elnabawi

Hamza

2019

Atmosphere

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The thermal characteristics of outdoor urban spaces and the street networks connecting them are vital to the assessment of the liveability and sustainability of cities. When urban spaces are thermally comfortable, city dwellers spend more time outdoors. This has several benefits for human health and wellbeing, also reducing indoor energy consumption and contributing to local economy. Studies on outdoor thermal comfort have highlighted the need to develop interdisciplinary frameworks that integrate physical, physiological, psychological, and social parameters to assist urban planners and designers in design decisions. In this paper, an extensive literature review of outdoor thermal comfort studies over the past decade was undertaken, including both rational and adaptive thermal comfort approaches, from the contextualize the behaviour perspectives related to the use of urban space. Consequently, the paper suggests a comprehensive framework for evaluating the relationship between the quantitative and qualitative parameters linking the microclimatic environment with subjective thermal assessment and social behaviour. The framework aims to contribute to the development of exclusive thermal comfort standards for outdoor urban settings.

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Urban outdoor thermal perception in hot arid Beer Sheva, Israel: Methodological and gender aspects

Cited by 53 publications

References 55 publications

Evaluating the wind cooling potential on outdoor thermal comfort in selected Iranian climate types

Evaluating the wind cooling potential on outdoor thermal comfort in selected Iranian climate types

Assessment of the Outdoor Thermal Comfort in Oases Settlements

Behavioural Perspectives of Outdoor Thermal Comfort in Urban Areas: A Critical Review

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