Vertical distribution analysis of PM2.5 concentration at urban highway intersections using low-cost sensors and unmanned aerial vehicles

IF 6 2区 工程技术 Q1 ENVIRONMENTAL SCIENCES
Masoud Zarei, Bijan Yeganeh
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引用次数: 0

Abstract

The high level of particulate matter (PM) is a critical issue in megacities and a major environmental challenge in urban management. Currently, the vertical distribution of PM concentration has been overlooked at traffic hot spots in the design and construction of high-rise buildings. This study assessed the vertical profile of PM2.5 concentration using low-cost sensors and drones to find the residents' exposure to PM2.5 at high-rise buildings. The results showed that the vertical pattern of the PM2.5 concentration on highways with lower traffic of light-duty vehicles (LDVs) was affected by height, with a 30 % increase in PM2.5 concentration at 15 m above the ground compared to ground-level concentration. In contrast, the concentration of PM2.5 on highways with more Heavy-Duty Vehicles (HDVs) traffic at ground levels was about 20 % higher than that at 15 m, gradually decreasing to 23 % at 30 m. The results revealed that PM2.5 concentration could increase with height in high-rise buildings near highway intersections instead of dilution, which would adversely affect the health of the residents. The findings of this study can be considered by urban planners and decision-makers to reduce PM2.5 exposure before settling the citizens in high-rise buildings.
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来源期刊
Urban Climate
Urban Climate Social Sciences-Urban Studies
CiteScore
9.70
自引率
9.40%
发文量
286
期刊介绍: Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following: Urban meteorology and climate[...] Urban environmental pollution[...] Adaptation to global change[...] Urban economic and social issues[...] Research Approaches[...]
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