The efficacy of low emission zones in central London as a means of reducing nitrogen dioxide concentrations
The efficacy of low emission zones in central London as a means of reducing nitrogen dioxide concentrations
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DOI：
10.1016/s1361-9209(01)00008-6
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发表时间：
2002-01-01
影响因子：
7.6
通讯作者：
Beevers, SD
中科院分区：
文献类型：
--
作者：
Carslaw, DC;Beevers, SD
本文考虑了不同策略的影响，可以考虑减少道路交通对伦敦空气污染的影响。管理大城市地区的道路交通是减少污染物排放以达到法定空气污染目标的众多备选方案之一。越来越多的人提出了低排放区的概念，作为实现这一减少的一种手段。对伦敦市中心不同的LEZ方案进行了评估，包括减少交通流量或修改车辆技术组合。利用综合交通数据和空气污染测量预测年平均二氧化氮浓度的方法已被用于开发经验预测模型。与法定空气污染目标的比较表明，需要采取重大行动来明显降低道路附近的二氧化氮浓度。导致二氧化氮形成的非线性大气化学导致车辆排放与环境污染物浓度之间的复杂关系。我们的研究表明，即使是在伦敦市中心雄心勃勃的低碳区设想，也会产生氮氧化物浓度，而在“什么都不做”的设想中，氮氧化物浓度仅在五年后才会达到。2001爱思唯尔科学有限公司版权所有。
This paper considers the effects of different strategies that might be considered to reduce the impact made by road traffic on air pollution in London. The management of road traffic in large urban areas is one of many options being considered to reduce pollutant emissions to meet statutory air pollution objectives. Increasingly, the concept of a low emission zone (LEZ) is being proposed as a means of achieving this reduction. An assessment has been made of different LEZ scenarios in central London, which involve reducing traffic flow or modifying the vehicle technology mix. Methods of predicting annual mean nitrogen dioxide concentrations utilising comprehensive traffic data and air pollution measurements have been used to develop empirical prediction models. Comparisons with statutory air pollution objectives show that significant action will be required to appreciably decrease concentrations of nitrogen dioxide close to roads. The non-linear atmospheric chemistry leading to the formation of nitrogen dioxide, results in a complex relationship between vehicle emissions and ambient concentrations of the pollutant. We show that even ambitious LEZ scenarios in central London produce concentrations of nitrogen oxides that are achieved through a "do nothing" scenario only five years later. (C) 2001 Elsevier Science Ltd. All rights reserved.