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Evaluation of the Street Canyon Level Air Pollution Distribution Pattern in a Typical City Block in Baoding, China

Urban traffic pollution, which is strongly influenced by the complex urban morphology, has posed a great threat to human health. In this study, we performed a high-resolution simulation of traffic pollution in a typical city block in Baoding, China, based on the Parallelized Large-eddy simulation Mo...

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Detalles Bibliográficos
Autores principales: Zhou, Jingcheng, Liu, Junfeng, Xiang, Songlin, Zhang, Yizhou, Wang, Yuqing, Ge, Wendong, Hu, Jianying, Wan, Yi, Wang, Xuejun, Liu, Ying, Ma, Jianmin, Wang, Xilong, Tao, Shu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9408171/
https://www.ncbi.nlm.nih.gov/pubmed/36012070
http://dx.doi.org/10.3390/ijerph191610432
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author Zhou, Jingcheng
Liu, Junfeng
Xiang, Songlin
Zhang, Yizhou
Wang, Yuqing
Ge, Wendong
Hu, Jianying
Wan, Yi
Wang, Xuejun
Liu, Ying
Ma, Jianmin
Wang, Xilong
Tao, Shu
author_facet Zhou, Jingcheng
Liu, Junfeng
Xiang, Songlin
Zhang, Yizhou
Wang, Yuqing
Ge, Wendong
Hu, Jianying
Wan, Yi
Wang, Xuejun
Liu, Ying
Ma, Jianmin
Wang, Xilong
Tao, Shu
author_sort Zhou, Jingcheng
collection PubMed
description Urban traffic pollution, which is strongly influenced by the complex urban morphology, has posed a great threat to human health. In this study, we performed a high-resolution simulation of traffic pollution in a typical city block in Baoding, China, based on the Parallelized Large-eddy simulation Model (PALM), to examine the distribution patterns of traffic-related pollutants and explore their relationship with urban morphology. Based on the model results, we conducted a multi-linear regression (MLR) analysis and found that the distribution of air pollutants inside the city block was dominated by both traffic emissions and urban morphology, which explained about 70% of the total variance in spatial distribution of air pollutants. Excluding the contribution of emissions, over 50% of the total variance can still be explained by the urban morphology. Among these urban morphological factors, the key factors determining the spatial distribution of air pollution are “Distance from the road” (DR), “Building Coverage Ratio” (BCR) and “Aspect Ratio” (H/W) of the street canyon. Specifically, urban areas with lower Aspect Ratio, lower BCR and larger DR are less affected by traffic pollution. Compiling these individual factors, we developed a complex Urban Morphology Pollution Index (UMPI). Each unit increase in UMPI is associated with a one percent increase of nearby traffic pollution contribution. This index can help urban planners to semi-quantitatively evaluate building groups which tend to trap or ventilate traffic pollution and thus help to reduce human exposure to street canyon level pollution through either traffic emission control or urban morphology amelioration.
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spelling pubmed-94081712022-08-26 Evaluation of the Street Canyon Level Air Pollution Distribution Pattern in a Typical City Block in Baoding, China Zhou, Jingcheng Liu, Junfeng Xiang, Songlin Zhang, Yizhou Wang, Yuqing Ge, Wendong Hu, Jianying Wan, Yi Wang, Xuejun Liu, Ying Ma, Jianmin Wang, Xilong Tao, Shu Int J Environ Res Public Health Article Urban traffic pollution, which is strongly influenced by the complex urban morphology, has posed a great threat to human health. In this study, we performed a high-resolution simulation of traffic pollution in a typical city block in Baoding, China, based on the Parallelized Large-eddy simulation Model (PALM), to examine the distribution patterns of traffic-related pollutants and explore their relationship with urban morphology. Based on the model results, we conducted a multi-linear regression (MLR) analysis and found that the distribution of air pollutants inside the city block was dominated by both traffic emissions and urban morphology, which explained about 70% of the total variance in spatial distribution of air pollutants. Excluding the contribution of emissions, over 50% of the total variance can still be explained by the urban morphology. Among these urban morphological factors, the key factors determining the spatial distribution of air pollution are “Distance from the road” (DR), “Building Coverage Ratio” (BCR) and “Aspect Ratio” (H/W) of the street canyon. Specifically, urban areas with lower Aspect Ratio, lower BCR and larger DR are less affected by traffic pollution. Compiling these individual factors, we developed a complex Urban Morphology Pollution Index (UMPI). Each unit increase in UMPI is associated with a one percent increase of nearby traffic pollution contribution. This index can help urban planners to semi-quantitatively evaluate building groups which tend to trap or ventilate traffic pollution and thus help to reduce human exposure to street canyon level pollution through either traffic emission control or urban morphology amelioration. MDPI 2022-08-22 /pmc/articles/PMC9408171/ /pubmed/36012070 http://dx.doi.org/10.3390/ijerph191610432 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhou, Jingcheng
Liu, Junfeng
Xiang, Songlin
Zhang, Yizhou
Wang, Yuqing
Ge, Wendong
Hu, Jianying
Wan, Yi
Wang, Xuejun
Liu, Ying
Ma, Jianmin
Wang, Xilong
Tao, Shu
Evaluation of the Street Canyon Level Air Pollution Distribution Pattern in a Typical City Block in Baoding, China
title Evaluation of the Street Canyon Level Air Pollution Distribution Pattern in a Typical City Block in Baoding, China
title_full Evaluation of the Street Canyon Level Air Pollution Distribution Pattern in a Typical City Block in Baoding, China
title_fullStr Evaluation of the Street Canyon Level Air Pollution Distribution Pattern in a Typical City Block in Baoding, China
title_full_unstemmed Evaluation of the Street Canyon Level Air Pollution Distribution Pattern in a Typical City Block in Baoding, China
title_short Evaluation of the Street Canyon Level Air Pollution Distribution Pattern in a Typical City Block in Baoding, China
title_sort evaluation of the street canyon level air pollution distribution pattern in a typical city block in baoding, china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9408171/
https://www.ncbi.nlm.nih.gov/pubmed/36012070
http://dx.doi.org/10.3390/ijerph191610432
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