London hybrid exposure model: improving human exposure estimates to NO2 and PM2.5 in an urban setting
File(s)acs.est.6b01817.pdf (1.57 MB)
Published version
OA Location
Author(s)
Type
Journal Article
Abstract
Here we describe the development of the London Hybrid Exposure Model (LHEM), which calculates exposure of the Greater London population to outdoor air pollution sources, in-buildings, in-vehicles and outdoors, using survey data of when and where people spend their time. For comparison and to estimate exposure misclassification we compared Londoners LHEM exposure with exposure at the residential address, a commonly used exposure metric in epidemiological research. In 2011, the mean annual LHEM exposure to outdoor sources was estimated to be 37÷ lower for PM2.5 and 63÷ lower for NO2 than at the residential address. These decreased estimates reflect, the effects of reduced exposure indoors, the amount of time spent indoors (95÷), and the mode and duration of travel in London. We find that an individual's exposure to PM2.5 and NO2 outside their residential address is highly correlated (Pearson's R of 0.9). In contrast, LHEM exposure estimates for PM2.5 and NO2 suggest that the degree of correlation is influe...
Date Issued
2016-11-01
Date Acceptance
2016-10-06
Citation
Environmental Science and Technology (Washington), 2016, 50 (21), pp.11760-11768
ISSN
0013-936X
Publisher
American Chemical Society
Start Page
11760
End Page
11768
Journal / Book Title
Environmental Science and Technology (Washington)
Volume
50
Issue
21
Copyright Statement
© 2016 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY)
License, which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.
License, which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.
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Sponsor
Medical Research Council (MRC)
Identifier
https://www.scopus.com/record/display.uri?eid=2-s2.0-84993990169&origin=resultslist&sort=plf-f&src=s&st1=+London+Hybrid+Exposure+Model%3a+Improving+Human+Exposure+Estimates+to+NO2+and+PM2.5+in+an+Urban+Setting&st2=&sid=BB4D950EB329475610167DA451A435E0.wsnAw8kcdt7IPYLO0V48gA%3a230&sot=b&sdt=b&sl=117&s=TITLE-ABS-KEY%28+London+Hybrid+Exposure+Model%3a+Improving+Human+Exposure+Estimates+to+NO2+and+PM2.5+in+an+Urban+Setting%29&relpos=0&citeCnt=0&searchTerm=
Grant Number
MR/L01341X/1
Subjects
Science & Technology
Technology
Life Sciences & Biomedicine
Engineering, Environmental
Environmental Sciences
Engineering
Environmental Sciences & Ecology
PARTICULATE AIR-POLLUTION
PERSONAL EXPOSURE
TRANSPORT MICROENVIRONMENTS
TIME-SERIES
POPULATION EXPOSURE
NITROGEN-DIOXIDE
HEALTH IMPACT
BLACK CARBON
FINE
OUTDOOR
Air Pollutants
Air Pollution
Humans
London
Models, Theoretical
Particulate Matter
Humans
Air Pollutants
Air Pollution
Models, Theoretical
London
Particulate Matter
Environmental Sciences
Notes
10.1021/acs.est.6b01817 Here we describe the development of the London Hybrid Exposure Model (LHEM), which calculates exposure of the Greater London population to outdoor air pollution sources, in-buildings, in-vehicles and outdoors, using survey data of when and where people spend their time. For comparison and to estimate exposure misclassification we compared Londoners LHEM exposure with exposure at the residential address, a commonly used exposure metric in epidemiological research. In 2011, the mean annual LHEM exposure to outdoor sources was estimated to be 37÷ lower for PM2.5 and 63÷ lower for NO2 than at the residential address. These decreased estimates reflect, the effects of reduced exposure indoors, the amount of time spent indoors (95÷), and the mode and duration of travel in London. We find that an individual's exposure to PM2.5 and NO2 outside their residential address is highly correlated (Pearson's R of 0.9). In contrast, LHEM exposure estimates for PM2.5 and NO2 suggest that the degree of correlation is influe...
Date Publish Online
2016-10-21