Street-scale black carbon modelling over the West Midlands, United Kingdom: Sensitivity test of traffic emission factor adjustments

IF 10.3 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environment International Pub Date : 2025-02-01 DOI:10.1016/j.envint.2025.109265

Jian Zhong , Yinghua Li , William James Bloss , Roy M. Harrison

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Abstract

Black carbon is harmful for climate, environment, and human health. Road traffic is one of the major sources for black carbon in urban areas. This study develops a street scale air quality model configuration for the dispersion of black carbon concentrations across the West Midlands, UK, incorporating updated road traffic emission factors. A range of modelling cases accounting for traffic emission factor adjustments was conducted and evaluated against measurements at three monitoring sites within the region. The model overall has good performance. With unadjusted traffic emission factors, the model can capture black carbon annual concentrations at urban background sites. However, an adjustment (factor of 3) for the traffic emission factors is needed to better represent the roadside site (although with a slight overestimation of 3 % in annual concentration). There are near-linear relationships between black carbon concentrations and the adjustment ratio for the traffic emission factor. Black carbon concentration maps have been generated at 10 m × 10 m resolution, which were then aggregated into health-related electoral ward and local authority levels.

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英国西米德兰兹郡街道黑碳模型：交通排放因子调整的敏感性测试

黑碳对气候、环境和人类健康有害。道路交通是城市地区黑碳的主要来源之一。本研究开发了一个街道尺度的空气质量模型配置，用于黑碳浓度在英国西米德兰兹郡的分散，并纳入了最新的道路交通排放因素。进行了一系列考虑交通排放因素调整的模拟案例，并根据区域内三个监测点的测量结果进行了评估。该模型整体性能良好。在未调整交通排放因子的情况下，该模型可以捕获城市背景点的黑碳年浓度。然而，需要对交通排放因子进行调整（因子3），以更好地代表路边地点（尽管年浓度略微高估了3 %）。黑碳浓度与交通排放因子调整比呈近似线性关系。以10 m × 10 m分辨率生成了黑碳浓度图，然后将其汇总到与卫生有关的选区和地方当局级别。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environment International 环境科学-环境科学

CiteScore

21.90

自引率

3.40%

发文量

734

审稿时长

2.8 months

期刊介绍： Environmental Health publishes manuscripts focusing on critical aspects of environmental and occupational medicine, including studies in toxicology and epidemiology, to illuminate the human health implications of exposure to environmental hazards. The journal adopts an open-access model and practices open peer review. It caters to scientists and practitioners across all environmental science domains, directly or indirectly impacting human health and well-being. With a commitment to enhancing the prevention of environmentally-related health risks, Environmental Health serves as a public health journal for the community and scientists engaged in matters of public health significance concerning the environment.