DOI: 10.1016/j.atmosenv.2015.05.055
Scopus记录号: 2-s2.0-84930660082
论文题名: Residential NOx exposure in a 35-year cohort study. Changes of exposure, and comparison with back extrapolation for historical exposure assessment
作者: Molnár P ; , Stockfelt L ; , Barregard L ; , Sallsten G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 115 起始页码: 62
结束页码: 69
语种: 英语
英文关键词: Air pollution
; Back extrapolation
; Dispersion modeling
; GIS
; NO2
; Spatial distribution
; Time trends
Scopus关键词: Dispersions
; Extrapolation
; Geographic information systems
; Housing
; Nitrogen oxides
; Pollution
; Spatial distribution
; Dispersion modeling
; Dispersion models
; Epidemiological studies
; Exposure assessment
; Exposure estimates
; Historical emissions
; Monitoring stations
; Time trends
; Air pollution
; nitrogen oxide
; atmospheric pollution
; comparative study
; concentration (composition)
; dispersion
; emission inventory
; historical geography
; local participation
; nitrogen oxides
; pollution exposure
; relocation
; resident population
; spatial distribution
; traffic emission
; trend analysis
; aged
; air pollution
; Article
; atmospheric dispersion
; cardiovascular risk
; clinical assessment
; cohort analysis
; comparative study
; controlled study
; environmental exposure
; environmental monitoring
; exhaust gas
; geographic distribution
; health status
; human
; long term exposure
; male
; medical examination
; motor vehicle
; population
; primary prevention
; priority journal
; residential area
; risk assessment
; shipping
; spatial analysis
; Goteborg
; Sweden
; Vastra Gotaland
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: In this study we aimed to investigate the effects on historical NOx estimates on time trends, spatial distributions, exposure contrasts, the effect of relocation patterns and the effects of back extrapolation. Historical levels of nitrogen oxides (NOx) from 1975 to 2009 were modeled with high resolution in Gothenburg, Sweden, using historical emission databases and Gaussian models. Yearly historical addresses were collected and geocoded from a population-based cohort of Swedish men from 1973 to 2007, with a total of 160,568 address years. Of these addresses, 146,675 (91%) were within our modeled area and assigned a NOx level.NOx levels decreased substantially from a maximum median level of 43.9μgm-3 in 1983 to 16.6μgm-3 in 2007, mainly due to lower emissions per vehicle km. There was a considerable variability in concentrations within the cohort, with a ratio of 3.5 between the means in the highest and lowest quartile. About 50% of the participants changed residential address during the study, but the mean NOx exposure was not affected. About half of these moves resulted in a positive or negative change in NOx exposure of >10μgm-3, and thus changed the exposure substantially. Back extrapolation of NOx levels using the time trend of a background monitoring station worked well for 5-7 years back in time, but extrapolation more than ten years back in time resulted in substantial scattering compared to the "true" dispersion models for the corresponding years. These findings are important to take into account since accurate exposure estimates are essential in long term epidemiological studies of health effects of air pollution. © 2015 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81663
Appears in Collections: 气候变化事实与影响
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作者单位: Occupational and Environmental Medicine, University of Gothenburg, Sweden
Recommended Citation:
Molnár P,, Stockfelt L,, Barregard L,et al. Residential NOx exposure in a 35-year cohort study. Changes of exposure, and comparison with back extrapolation for historical exposure assessment[J]. Atmospheric Environment,2015-01-01,115