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首页> 外文期刊>Air quality, atmosphere & health >Estimation of CO concentrations for an urban street canyon in Ireland
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Estimation of CO concentrations for an urban street canyon in Ireland

机译：估算爱尔兰城市街道峡谷中的CO浓度

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摘要

In most European cities, traffic is the most important source of air pollution, with the highest ambient concentrations often found on streets in urban centres. Vehicular pollution dispersion models are therefore essential computational tools for predicting the impacts of emissions from road traffic. These include models for evaluating air quality in street canyons, where the existence of a recirculating vortex leads to unique pollutant transport and dispersion conditions. In this context, two urban street canyon models, namely STREET and Operational Street Pollution Model (OSPM), were investigated at Pearse Street, an important traffic route in the centre of Dublin city. Previous validation exercises of these models particularly the OSPM has been carried out in continental Europe which has relatively deep canyon characteristics with aspect ratio (H/W) greater than 1. The performance of these models for low street canyons with aspect ratio less than 1 has rarely been reported. As such, this present study reports the results obtained whilst applying these models for a low street canyon in Dublin, Ireland.
机译：在大多数欧洲城市中，交通是最重要的空气污染源，在城市中心的街道上经常发现最高的环境浓度。因此，车辆污染扩散模型是预测道路交通排放影响的重要计算工具。这些模型包括用于评估街道峡谷中空气质量的模型，在该模型中，存在循环涡流会导致独特的污染物运输和扩散条件。在此背景下，在都柏林市中心的重要交通路线Pearse Street上研究了两个城市街道峡谷模型，即STREET和Operational Street Pollution Model（OSPM）。这些模型（尤其是OSPM）的先前验证工作是在欧洲大陆进行的，该大陆具有相对较深的峡谷特征（纵横比（H / W）大于1）。这些模型对纵横比小于1的低街峡谷的性能具有鲜有报道。因此，本研究报告了将这些模型应用于爱尔兰都柏林的低街峡谷时获得的结果。

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