Extreme particulate matter exposure at traffic intersections in a densely populated city

IF 7.3 1区 工程技术 Q1 ENVIRONMENTAL STUDIES
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引用次数: 0

Abstract

Commuters are exposed to significantly high pollution levels at traffic intersections. This study utilized the generalized Pareto distribution to model commuters’ exposure to extreme particulate matter (PM) levels across 36 traffic intersections in Varanasi, India. A Bayesian hierarchical framework was deployed to account for the seasonal variation. The monthly return levels for extreme PM2.5 (PM10) were 589 (1127), 474 (961), and 429 (902) µg/m3 during winter, spring, and summer, respectively. The extreme PM2.5 and PM10 concentrations exceeded the NAAQS severe category for all three seasons. There is a 0.72 % (1.47 %) chance that during winter, PM2.5 (PM10) levels would exceed that of the Delhi smog event (PM2.5: 585 µg/m3, PM10: 989 µg/m3). These findings raise concerns about public health and the environment, particularly in winter. The results would guide policymakers in enforcing stringent measures to reduce extreme exposures at traffic intersections in densely populated cities.

人口稠密城市交通路口的极端颗粒物接触情况
在交通路口,上班族暴露在极高的污染水平下。本研究利用广义帕累托分布对印度瓦拉纳西 36 个交通路口的乘客暴露于极端颗粒物(PM)水平的情况进行建模。采用贝叶斯分层框架来考虑季节性变化。在冬季、春季和夏季,极端 PM2.5(PM10)的月回归水平分别为 589(1127)、474(961)和 429(902)微克/立方米。在所有三个季节中,PM2.5 和 PM10 的极端浓度都超过了 NAAQS 的严重级别。冬季 PM2.5(PM10)浓度超过德里烟雾事件(PM2.5:585 微克/立方米,PM10:989 微克/立方米)的几率为 0.72%(1.47%)。这些发现引起了人们对公众健康和环境的关注,尤其是在冬季。这些结果将指导政策制定者执行严格的措施,以减少人口稠密城市交通路口的极端暴露。
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来源期刊
CiteScore
14.40
自引率
9.20%
发文量
314
审稿时长
39 days
期刊介绍: Transportation Research Part D: Transport and Environment focuses on original research exploring the environmental impacts of transportation, policy responses to these impacts, and their implications for transportation system design, planning, and management. The journal comprehensively covers the interaction between transportation and the environment, ranging from local effects on specific geographical areas to global implications such as natural resource depletion and atmospheric pollution. We welcome research papers across all transportation modes, including maritime, air, and land transportation, assessing their environmental impacts broadly. Papers addressing both mobile aspects and transportation infrastructure are considered. The journal prioritizes empirical findings and policy responses of regulatory, planning, technical, or fiscal nature. Articles are policy-driven, accessible, and applicable to readers from diverse disciplines, emphasizing relevance and practicality. We encourage interdisciplinary submissions and welcome contributions from economically developing and advanced countries alike, reflecting our international orientation.
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