Institute of Space and Earth Information Science, Fok Ying Tung Remote Sensing Science Building, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China.
Institute of Space and Earth Information Science, Fok Ying Tung Remote Sensing Science Building, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China; Department of Geography and Resource Management, Wong Foo Yuan Building, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China; Institute of Future Cities, Wong Foo Yuan Building, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China.
Health Place. 2023 Nov;84:103129. doi: 10.1016/j.healthplace.2023.103129. Epub 2023 Oct 17.
Air pollution perception biases hinder the public's awareness of actual air quality. Past studies that examined the association and mismatch between actual and perceived air quality neglected individuals' dynamic exposure and their activity, travel, spatial, temporal, and social contexts. Using data collected with real-time air pollutant sensors and ecological momentary assessment (EMA), this study investigated the association and mismatch between momentary air pollution exposure and perceived air quality. It also examined how activity type, travel mode, spatial and temporal contexts, and social factors contribute to this disparity. The results show that exposure to air pollution is significantly higher in residential areas (1.777 μg/m) and transportation land-use areas (2.863 μg/m) compared to commercial areas. Exposure in the evening is 1.308 μg/m higher than in the afternoon. Working or studying activities are associated with 2.863 μg/m lower exposure, and individuals perceive air quality as good when working or studying and in residential areas. Conversely, individuals assess air quality as poor in railway travel contexts and being accompanied by friends. This study also reveals the nonstationary association between air pollution exposure and perceived air quality. The odds of underestimating air pollution are 1.8-2.7 times as high as that in residential areas and 2.1 to 2.6 times that in transportation land-use areas when compared to commercial areas. Implementing targeted mitigation measures in these contexts can enhance public awareness of air pollution.
空气污染感知偏差阻碍了公众对实际空气质量的认识。过去的研究虽然考察了实际空气质量与感知空气质量之间的关联和不匹配，但忽略了个体的动态暴露及其活动、出行、空间、时间和社会背景。本研究使用实时空气污染物传感器和生态瞬时评估（EMA）收集的数据，调查了瞬时空气污染暴露与感知空气质量之间的关联和不匹配，并探讨了活动类型、出行模式、空间和时间背景以及社会因素对这种差异的贡献。结果表明，与商业区域相比，居住区域（1.777μg/m）和交通用地区域（2.863μg/m）的空气污染暴露明显更高。傍晚的暴露水平比下午高 1.308μg/m。工作或学习活动的暴露水平低 2.863μg/m，个体在工作或学习以及居住区域时会感知到空气质量良好。相反，在铁路旅行环境中和有朋友陪伴时，个体则会评估空气质量较差。本研究还揭示了空气污染暴露与感知空气质量之间的非平稳关联。与商业区域相比，居住区域和交通用地区域低估空气污染的几率分别高出 1.8-2.7 倍和 2.1-2.6 倍。在这些情况下实施有针对性的缓解措施可以提高公众对空气污染的认识。
