Development of an open-source road traffic noise model for exposure assessment
Development of an open-source road traffic noise model for exposure assessment
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DOI：
10.1016/j.envsoft.2014.12.022
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发表时间：
2015-12-01
影响因子：
4.9
通讯作者：
Fecht, Daniela
中科院分区：
文献类型：
--
作者：
Gulliver, John;Morley, David;Fecht, Daniela
本文描述了一个开源地理信息系统中交通噪声暴露评估模型(TRANEX)的开发。我们没有使用专利软件，而是出于两个主要原因开发了自己的模型：1)使源几何形状、交通信息(流量/速度/空间变化的昼夜交通曲线)和接收器的处理与交通项目中进行的空气污染模拟尽可能接近；2)出于实际原因，需要在大片地理区域实施具有详细源几何结构的噪声模型，以在有限的计算资源下对多达数百万个地址位置的噪声进行估计。为了评估TRANEX，噪音估计与英国城市莱斯特和诺里奇的噪音测量进行了比较。L-埃克、L-1小时(诺里奇：r=0.85，p=.000；莱斯特：r=0.95，p=.000)的模型与实测值具有较高的相关性，平均模型误差为3.1分贝。使用TRANEX估算了2003年至2010年伦敦常住人口的噪声暴露(L-Aeq、L-1小时、L-Aeq、L-16小时、L-夜间)。结果表明，103万人(12%)暴露于日间道路交通噪声水平=65dB(A)，163万人(19%)暴露于夜间道路交通噪声水平>；=55dB(A)。2010年和2003年的平均噪声水平差异相对较小：L-Aeq、L-16hr和L-Night的噪声水平分别为0.25db(标准差：0.89)和0.26db(标准差：0.87)。Crown Copyright(C)2015由Elsevier Ltd.出版。这是CC许可下的一篇开放获取文章
This paper describes the development of a model for assessing TRAffic Noise EXposure (TRANEX) in an open-source geographic information system. Instead of using proprietary software we developed our own model for two main reasons: 1) so that the treatment of source geometry, traffic information (flows/speeds/spatially varying diurnal traffic profiles) and receptors matched as closely as possible to that of the air pollution modelling being undertaken in the TRAFFIC project, and 2) to optimize model performance for practical reasons of needing to implement a noise model with detailed source geometry, over a large geographical area, to produce noise estimates at up to several million address locations, with limited computing resources. To evaluate TRANEX, noise estimates were compared with noise measurements made in the British cities of Leicester and Norwich. High correlation was seen between modelled and measured L-Aeq,L-1hr (Norwich: r = 0.85, p = .000; Leicester: r = 0.95, p = .000) with average model errors of 3.1 dB. TRANEX was used to estimate noise exposures (L-Aeq,L-1hr, L-Aeq,L-16hr, L-night) for the resident population of London (2003-2010). Results suggest that 1.03 million (12%) people are exposed to daytime road traffic noise levels >= 65 dB(A) and 1.63 million (19%) people are exposed to night-time road traffic noise levels >= 55 dB(A). Differences in noise levels between 2010 and 2003 were on average relatively small: 0.25 dB (standard deviation: 0.89) and 0.26 dB (standard deviation: 0.87) for L-Aeq,L-16hr and L-night. Crown Copyright (C) 2015 Published by Elsevier Ltd. This is an open access article under the CC BY license