Assessing residential exposure to urban noise using environmental models: does the size of the local living neighborhood matter?

Abstract : : Environmental epidemiological studies rely on the quantification of the exposure level in a surface defined as the subject's exposure area. For residential exposure, this area is often the subject's neighborhood. However, the variability of the size and nature of the neighborhoods makes comparison of the findings across studies difficult. This article examines the impact of the neighborhood's definition on environmental noise exposure levels obtained from four commonly used sampling techniques: address point, façade, buffers, and official zoning. A high-definition noise model, built on a middle-sized French city, has been used to estimate LAeq,24 h exposure in the vicinity of 10,825 residential buildings. Twelve noise exposure indicators have been used to assess inhabitants' exposure. Influence of urban environmental factors was analyzed using multilevel modeling. When the sampled area increases, the average exposure increases (+3.9 dB), whereas the SD decreases (-1.6 dB) (P<0.01). Most of the indicators differ statistically. When comparing indicators from the 50-m and 400-m radius buffers, the assigned LAeq,24 h level varies across buildings from -9.4 to +22.3 dB. This variation is influenced by urban environmental characteristics (P<0.01). On the basis of this study's findings, sampling technique, neighborhood size, and environmental composition should be carefully considered in further exposure studies.Journal of Exposure Science and Environmental Epidemiology advance online publication, 28 May 2014; doi:10.1038/jes.2014.33.
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Journal of Exposure Science and Environmental Epidemiology, Nature Publishing Group, 2014, 25 (1), pp.89-96. 〈10.1038/jes.2014.33〉
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Quentin Tenailleau, Nadine Bernard, Sophie Pujol, Hélène Houot, Daniel Joly, et al.. Assessing residential exposure to urban noise using environmental models: does the size of the local living neighborhood matter?. Journal of Exposure Science and Environmental Epidemiology, Nature Publishing Group, 2014, 25 (1), pp.89-96. 〈10.1038/jes.2014.33〉. 〈hal-01002337〉

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