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Validation of a Spatiotemporal Land Use Regression Model Incorporating Fixed Site Monitors

机译:结合固定站点监控器的时空土地利用回归模型的验证

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摘要

Land use regression (LUR) has been widely adopted as a method of describing spatial variation in air pollutants; however, traditional LUR methods are not suitable for characterizing short-term or time-variable exposures. Our aim was to develop and validate a spatiotemporal LUR model for use in epidemiological studies examining health effects attributable to time-variable air pollution exposures. A network of 42 NO_2 passive samplers was deployed for 12 two week periods over three years. A mixed effects model was tested using a combination of spatial predictors, and readings from fixed site continuous monitors, in order to predict NO_2 values for any two week period over three years in the defined study area. The final model, including terms based on traffic density at 50 and 150 m, population density within 500 m, commercial land use area within 750 m, and NO_2 concentrations at a central fixed site monitor, explained over 80% of the overall variation in NO_2 concentrations. Wesuggest that such a model can be used to study the association between variable air pollutant exposures and health effects in epidemiological studies.
机译:土地利用回归(LUR)已被广泛用作描述空气污染物空间变化的方法。但是,传统的LUR方法不适用于表征短期或随时间变化的暴露。我们的目标是开发和验证时空LUR模型,用于流行病学研究,研究可归因于随时间变化的空气污染暴露对健康的影响。在过去三年中,由42个NO_2被动采样器组成的网络部署了12个为期两周的周期。使用空间预测变量和固定站点连续监测器的读数对混合效应模型进行了测试,以便预测在定义的研究区域中三年内任何两周内的NO_2值。最终模型包括基于50和150 m处的交通密度,500 m内的人口密度,750 m内的商业土地使用面积以及中央固定站点监控器上的NO_2浓度的术语,解释了超过80%的NO_2总体变化浓度。我们建议,这种模型可用于在流行病学研究中研究可变的空气污染物暴露与健康影响之间的关联。

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  • 来源
    《Environmental Science & Technology》 |2011年第1期|p.294-299|共6页
  • 作者单位

    Woolcock Institute of Medical Research, P.O. Box M77, Missenden Road, NSW 2050, Australia;

    Woolcock Institute of Medical Research, P.O. Box M77, Missenden Road, NSW 2050, Australia;

    CSIRO Marine and Atmospheric Research, Private Bag No. 1, Aspendale, Vic 3195, Australia;

    Woolcock Institute of Medical Research, P.O. Box M77, Missenden Road, NSW 2050, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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