Geospatial Estimation of Individual Exposure to Air Pollutants: Moving from Static Monitoring to Activity-Based Dynamic Exposure Assessment

Eun-hye Yoo, C. Rudra, M. Glasgow, Lina Mu
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引用次数: 59

Abstract

Spatiotemporal variability of air pollutant concentrations and individuals' mobility are likely to play an important role in health outcomes and, therefore, time–activity-based exposure assessments are likely to be more sensitive compared to static residence-based air pollution estimates. Applied research on the effects of the variability underlying air pollutant concentrations and individuals' mobility on personal exposure estimates remain limited, however. We demonstrate how consideration of individuals' mobility and the spatiotemporal variability of ambient air pollution affect personal exposure estimates using both real-world data and simulated environmental conditions. Our findings suggest that time–activity-based exposure estimates might be quite similar to static estimates if spatiotemporal patterns of air pollution concentration surfaces lack autocorrelation or if an individual has a low level of mobility. There can be substantial differences, though, between two approaches when the air pollution concentrations are characterized by a model of air pollution that shows low variation over time and space and individuals' time spent away from home is substantial.
个人暴露于空气污染物的地理空间估计:从静态监测到基于活动的动态暴露评估
空气污染物浓度的时空变异性和个人的流动性可能在健康结果中发挥重要作用,因此,与基于住所的静态空气污染估计相比,基于时间活动的暴露评估可能更为敏感。然而,关于空气污染物浓度变异性和个人流动性对个人暴露估计的影响的应用研究仍然有限。我们展示了考虑个人的流动性和环境空气污染的时空变异性如何影响使用真实世界数据和模拟环境条件的个人暴露估计。我们的研究结果表明,如果空气污染浓度的时空模式缺乏自相关性,或者如果一个人的流动性水平较低,那么基于时间活动的暴露估计可能与静态估计非常相似。然而,当空气污染浓度的特征是一个空气污染模型,该模型显示空气污染浓度随时间和空间的变化很小,而个人离开家的时间很长时,两种方法之间可能存在重大差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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