Microclimatic measurements in tropical cities: Systematic review and proposed guidelines

Liu, Zhixin; Cheng, Ka Yuen; He, Yueyang; Jim, Chi Yung; Brown, Robert D.; Shi, Yuan; Lau, Kevin Ka-Lun; Ng, Edward

doi:10.1016/j.buildenv.2022.109411

Cited by 13 publications

(5 citation statements)

References 56 publications

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“…Other researchers used mobile measurement to monitor intra-urban air temperature at a micro-scale [24,25], examine the cooling effect of urban green spaces [26,27] and assess the UHI effect inside local climate zones [28,29]. These previous studies confirm the feasibility of using mobile measurement methods for microclimate investigation [30].…”

Section: Introductionmentioning

confidence: 58%

The Cooling Effect of an Urban River and Its Interaction with the Littoral Built Environment in Mitigating Heat Stress: A Mobile Measurement Study

et al. 2022

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Rivers within urban areas could influence the thermal environment by modifying air temperature (AT) and relative humidity (RH). To further explore the cooling effect of a large river on surrounding urban areas, we conducted mobile measurements near the Yangtze River in Wuhan during a hot and humid summer day. This research examined the river cooling effect, determined the thresholds of the cooling and humidifying distance using a third-order polynomial method, assessed littoral heat stress at the pedestrian level and investigated the impact of the littoral built environment using stepwise regression analysis. The results revealed that (1) the cooling and humidifying effect of the river was up to 3.55 °C, 1741 m and 17.25%, 1369 m in the daytime, which was much greater than that at night; (2) the river significantly mitigated pedestrian heat stress within 1200 m from the riverbank in the daytime, but showed a weak negative effect at night; (3) the built environment has a significant impact on the littoral areas, e.g., urban greening during the daytime and building morphology at night. The findings of this study provide empirical evidence for the cooling effect of a large river in urban areas and further support climate-sensitive planning and design for our thermal environment.

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Section: Introductionmentioning

confidence: 58%

The Cooling Effect of an Urban River and Its Interaction with the Littoral Built Environment in Mitigating Heat Stress: A Mobile Measurement Study

et al. 2022

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“…Air temperature, relative humidity, wind speed and direction, radiation, and ground surface temperature are five common types of microclimate variables [17,221,222]. Additionally, wind speed and average radiation temperature exhibit rapid variations across different times and locations [223]. Therefore, the measurement methods and accuracy requirements for wind speed and average radiation temperature are particularly stringent.…”

Section: Multi-factor Coupling Effects On Outdoor Thermal Comfortmentioning

confidence: 99%

“…As for wind speed, it is best to conduct three-dimensional measurements (not only at horizontal levels but also at vertical heights). Therefore, if low wind speeds are expected, cup or vane anemometers may provide inaccurate results, as they might erroneously record wind speeds below the measurement threshold as 0 [223]. Additionally, instruments should have fast response times and high measurement accuracy, and should be positioned at the center of a person's mass (at 0.6 m when seated and 1.1 m when standing).…”

Section: Multi-factor Coupling Effects On Outdoor Thermal Comfortmentioning

confidence: 99%

A Comparative Analysis of Outdoor Thermal Comfort Indicators Applied in China and Other Countries

Tao,

Zhu,

et al. 2023

Sustainability

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Outdoor thermal comfort is an important criterion for evaluating the quality of outdoor activity environments and is also a significant indicator for assessing sustainable building design. Over the past century, more than 165 indoor and outdoor thermal comfort indexes have been developed to define human thermal comfort conditions under various circumstances and to quantify indoor and outdoor thermal environmental conditions. However, in the process of outdoor thermal comfort indicators becoming widely used worldwide, it remains a pressing research issue to compare the current state of application in China and other countries, identify the key areas of application for both sides, and outline the trends in outdoor thermal comfort index application. This study analyzed 346 articles on outdoor thermal comfort indicators. Employing bibliometric methods, we outline the general landscape of outdoor thermal comfort index applications in China and other countries. Additionally, we utilize comparative analysis to uncover similarities and differences in the research focus on outdoor thermal comfort. The research findings indicate the following: (1) Compared to China, other countries started outdoor thermal comfort index application research earlier. Their papers have higher average citation counts and engage in close academic collaborations. However, the quantity of published papers is fewer than in China. (2) The top five frequently used indexes in both China and other countries are PET (including mPET), UTCI, PMV, SET* (including OUT_SET*), and THI (including DI). China tends to use PET and UTCI more frequently than other countries. (3) The potential future directions for outdoor thermal comfort index applications in both China and other countries include: “monitoring and controlling regional outdoor thermal comfort at the temporal and spatial scales”, “multi-factors coupling effects on outdoor thermal comfort”, “human health assessment and prediction based on outdoor thermal comfort”, and “utilizing computational algorithms to calculate outdoor thermal comfort”. This study can serve as a reference for researchers and designers in the industry, contributing to the creation of sustainable outdoor environments.

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“…1 However, selecting representative measurement sites for studies of the CUHIs is still a problem that needs to be addressed. 18 , 19 Due to the proliferation of satellite observations in the land surface temperature (LST) field, several studies have attempted to explain the mechanisms responsible for SUHIs. 20 , 21 The same sensor used in a single satellite can provide complete global coverage observation data to obtain large-scale surface temperature observations for applications in comparative studies of cities under different background climatic conditions.…”

Section: Introductionmentioning

confidence: 99%

Different explanations for surface and canopy urban heat island effects in relation to background climate

Yang,

Li,

et al. 2024

iScience

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Microclimatic measurements in tropical cities: Systematic review and proposed guidelines

Cited by 13 publications

References 56 publications

The Cooling Effect of an Urban River and Its Interaction with the Littoral Built Environment in Mitigating Heat Stress: A Mobile Measurement Study

The Cooling Effect of an Urban River and Its Interaction with the Littoral Built Environment in Mitigating Heat Stress: A Mobile Measurement Study

A Comparative Analysis of Outdoor Thermal Comfort Indicators Applied in China and Other Countries

Different explanations for surface and canopy urban heat island effects in relation to background climate

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