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DOI | 10.1038/jes.2014.13 |
GPS-based microenvironment tracker (MicroTrac) model to estimate time location of individuals for air pollution exposure assessments: Model evaluation in central North Carolina | |
Breen, Michael S.1; Long, Thomas C.2; Schultz, Bradley D.1; Crooks, James3; Breen, Miyuki3; Langstaff, John E.4; Isaacs, Kristin K.1; Tan, Yu-Mei1; Williams, Ronald W.1; Cao, Ye2; Geller, Andrew M.5; Devlin, Robert B.3; Batterman, Stuart A.6; Buckley, Timothy J.1 | |
发表日期 | 2014-07-01 |
ISSN | 1559-0631 |
卷号 | 24期号:4页码:412-420 |
英文摘要 | A critical aspect of air pollution exposure assessment is the estimation of the time spent by individuals in various microenvironments (ME). Accounting for the time spent in different ME with different pollutant concentrations can reduce exposure misclassifications, while failure to do so can add uncertainty and bias to risk estimates. In this study, a classification model, called MicroTrac, was developed to estimate time of day and duration spent in eight ME (indoors and outdoors at home, work, school; inside vehicles; other locations) from global positioning system (GPS) data and geocoded building boundaries. Based on a panel study, MicroTrac estimates were compared with 24-h diary data from nine participants, with corresponding GPS data and building boundaries of home, school, and work. MicroTrac correctly classified the ME for 99.5% of the daily time spent by the participants. The capability of MicroTrac could help to reduce the time location uncertainty in air pollution exposure models and exposure metrics for individuals in health studies. |
英文关键词 | GPS;time-activity;microenvironment;air pollution;health |
语种 | 英语 |
WOS记录号 | WOS:000337651800010 |
来源期刊 | JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY
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来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/57987 |
作者单位 | 1.US EPA, Natl Exposure Res Lab, Res Triangle Pk, NC 27709 USA; 2.US EPA, Natl Ctr Environm Assessment, Res Triangle Pk, NC 27709 USA; 3.US EPA, Natl Hlth & Environm Effects Res Lab, Res Triangle Pk, NC 27709 USA; 4.US EPA, Off Air Qual Planning & Stand, Res Triangle Pk, NC 27709 USA; 5.US EPA, Immediate Off Assistant Administrator, Res Triangle Pk, NC 27709 USA; 6.Univ Michigan, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Breen, Michael S.,Long, Thomas C.,Schultz, Bradley D.,et al. GPS-based microenvironment tracker (MicroTrac) model to estimate time location of individuals for air pollution exposure assessments: Model evaluation in central North Carolina[J]. 美国环保署,2014,24(4):412-420. |
APA | Breen, Michael S..,Long, Thomas C..,Schultz, Bradley D..,Crooks, James.,Breen, Miyuki.,...&Buckley, Timothy J..(2014).GPS-based microenvironment tracker (MicroTrac) model to estimate time location of individuals for air pollution exposure assessments: Model evaluation in central North Carolina.JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY,24(4),412-420. |
MLA | Breen, Michael S.,et al."GPS-based microenvironment tracker (MicroTrac) model to estimate time location of individuals for air pollution exposure assessments: Model evaluation in central North Carolina".JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY 24.4(2014):412-420. |
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