Monitoring on-road air quality and measuring vehicle emissions with remote sensing in an urban area

Smit, R; Kingston, P; Neale, DW; Brown, MK; Verran, B; Nolan, T

Monitoring on-road air quality and measuring vehicle emissions with remote sensing in an urban area

Smit, R Kingston, P Neale, DW Brown, MK Verran, B Nolan, T

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Atmospheric Environment, 2019, 218, pp. 116978-116978
Issue Date:: 2019-12-01

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Field	Value	Language
dc.contributor.author	Smit, R
dc.contributor.author	Kingston, P
dc.contributor.author	Neale, DW
dc.contributor.author	Brown, MK
dc.contributor.author	Verran, B
dc.contributor.author	Nolan, T
dc.date.accessioned	2021-03-10T02:34:25Z
dc.date.available	2021-03-10T02:34:25Z
dc.date.issued	2019-12-01
dc.identifier.citation	Atmospheric Environment, 2019, 218, pp. 116978-116978
dc.identifier.issn	1352-2310
dc.identifier.issn	1873-2844
dc.identifier.uri	http://hdl.handle.net/10453/146981
dc.description.abstract	© 2019 Elsevier Ltd Simultaneous day-time measurement (8 a.m.–5 p.m.) of on-road air quality and emissions (remote sensing) on an urban road with traffic volumes varying between approximately 400-800 vehicles per hour and an average speed of about 40 km/h has been used to compare multiple measurement techniques and assess on-road air quality. It was found that observed daytime concentration levels of CO, NOx, NO2, O3, PM10 and PM2.5 are below current WHO health based guideline values, varying from a few percent (CO) to above 60% (O3 and PM2.5) of the guideline values. NO2 to NOx ratios were about a factor of two higher than measured in a previous tunnel study, which indicates that about half of measured NO2 concentrations are due to urban background levels. Statistical analysis suggest that on-road NO2 and ozone concentrations are largely driven by atmospheric chemistry processes, and not significantly affected by variation in local traffic volume and fleet mix. A significant positive weighted correlation (r = 0.71–0.74) between remote sensing and air concentration monitoring is observed for CO in calm conditions. Speciated VOC measurements on the road show large discrepancies with current COPERT (Australia) vehicle emission factors, confirming the results from an earlier tunnel study. The weight of evidence suggests that the current (EU based) VOC speciation in COPERT Australia is likely not appropriate for the Australian on-road fleet.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Atmospheric Environment
dc.relation.isbasedon	10.1016/j.atmosenv.2019.116978
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0104 Statistics, 0401 Atmospheric Sciences, 0907 Environmental Engineering
dc.subject.classification	Meteorology & Atmospheric Sciences
dc.title	Monitoring on-road air quality and measuring vehicle emissions with remote sensing in an urban area
dc.type	Journal Article
utslib.citation.volume	218
utslib.for	0104 Statistics
utslib.for	0401 Atmospheric Sciences
utslib.for	0907 Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2021-03-10T02:34:23Z
pubs.publication-status	Published
pubs.volume	218

Abstract:

© 2019 Elsevier Ltd Simultaneous day-time measurement (8 a.m.–5 p.m.) of on-road air quality and emissions (remote sensing) on an urban road with traffic volumes varying between approximately 400-800 vehicles per hour and an average speed of about 40 km/h has been used to compare multiple measurement techniques and assess on-road air quality. It was found that observed daytime concentration levels of CO, NOx, NO2, O3, PM10 and PM2.5 are below current WHO health based guideline values, varying from a few percent (CO) to above 60% (O3 and PM2.5) of the guideline values. NO2 to NOx ratios were about a factor of two higher than measured in a previous tunnel study, which indicates that about half of measured NO2 concentrations are due to urban background levels. Statistical analysis suggest that on-road NO2 and ozone concentrations are largely driven by atmospheric chemistry processes, and not significantly affected by variation in local traffic volume and fleet mix. A significant positive weighted correlation (r = 0.71–0.74) between remote sensing and air concentration monitoring is observed for CO in calm conditions. Speciated VOC measurements on the road show large discrepancies with current COPERT (Australia) vehicle emission factors, confirming the results from an earlier tunnel study. The weight of evidence suggests that the current (EU based) VOC speciation in COPERT Australia is likely not appropriate for the Australian on-road fleet.

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http://hdl.handle.net/10453/146981