Vertical monitoring of traffic-related air pollution (TRAP) in urban street canyons of Hong Kong

Paulina P.Y. WONG, Poh Chin LAI*, Ryan ALLEN, Wei CHENG, Martha LEE, Anthony TSUI, Robert TANG, Thuan Quoc THACH, Linwei TIAN, Michael BRAUER, Benjamin BARRATT

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)Researchpeer-review

Abstract

Rapid urbanization has significantly increased air pollution especially in urban regions with high traffic volumes. Existing methods for estimating traffic-related air pollution (TRAP) and TRAP-related health impacts are based on two-dimensional modelling. This paper describes a point-based methodology to monitor vertical pollutant concentrations in typical street canyons of Hong Kong. It explains the conceptual design, monitoring strategy and selection criteria for a limited number of receptor locations in street canyons to undertake field measurements for both outdoor exposure and indoor infiltration. It also expounds on the limitations and complications associated with field instrumentation and retention of participating home units. The empirical results were applied on the building infiltration efficiencies assessment. It is concluded that the cost-effective field methodology developed in this paper expects to strike a balance between exposure error and limited data locations. These findings will have important implications in future monitoring design of vertical TRAP exposure to support health studies.

Original languageEnglish
Pages (from-to)696-703
Number of pages8
JournalScience of the Total Environment
Volume670
Early online date16 Mar 2019
DOIs
Publication statusPublished - 20 Jun 2019

Fingerprint

street canyon
Air pollution
atmospheric pollution
Monitoring
monitoring
Infiltration
infiltration
Health
two-dimensional modeling
pollution exposure
methodology
urban region
health impact
Conceptual design
instrumentation
urbanization
traffic
cost
Costs
exposure

Keywords

  • Air pollution
  • Canyon monitoring
  • Infiltration efficiencies
  • Spatial analysis
  • Vertical dispersion

Cite this

WONG, Paulina P.Y. ; LAI, Poh Chin ; ALLEN, Ryan ; CHENG, Wei ; LEE, Martha ; TSUI, Anthony ; TANG, Robert ; THACH, Thuan Quoc ; TIAN, Linwei ; BRAUER, Michael ; BARRATT, Benjamin. / Vertical monitoring of traffic-related air pollution (TRAP) in urban street canyons of Hong Kong. In: Science of the Total Environment. 2019 ; Vol. 670. pp. 696-703.
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title = "Vertical monitoring of traffic-related air pollution (TRAP) in urban street canyons of Hong Kong",
abstract = "Rapid urbanization has significantly increased air pollution especially in urban regions with high traffic volumes. Existing methods for estimating traffic-related air pollution (TRAP) and TRAP-related health impacts are based on two-dimensional modelling. This paper describes a point-based methodology to monitor vertical pollutant concentrations in typical street canyons of Hong Kong. It explains the conceptual design, monitoring strategy and selection criteria for a limited number of receptor locations in street canyons to undertake field measurements for both outdoor exposure and indoor infiltration. It also expounds on the limitations and complications associated with field instrumentation and retention of participating home units. The empirical results were applied on the building infiltration efficiencies assessment. It is concluded that the cost-effective field methodology developed in this paper expects to strike a balance between exposure error and limited data locations. These findings will have important implications in future monitoring design of vertical TRAP exposure to support health studies.",
keywords = "Air pollution, Canyon monitoring, Infiltration efficiencies, Spatial analysis, Vertical dispersion",
author = "WONG, {Paulina P.Y.} and LAI, {Poh Chin} and Ryan ALLEN and Wei CHENG and Martha LEE and Anthony TSUI and Robert TANG and THACH, {Thuan Quoc} and Linwei TIAN and Michael BRAUER and Benjamin BARRATT",
year = "2019",
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WONG, PPY, LAI, PC, ALLEN, R, CHENG, W, LEE, M, TSUI, A, TANG, R, THACH, TQ, TIAN, L, BRAUER, M & BARRATT, B 2019, 'Vertical monitoring of traffic-related air pollution (TRAP) in urban street canyons of Hong Kong', Science of the Total Environment, vol. 670, pp. 696-703. https://doi.org/10.1016/j.scitotenv.2019.03.224

Vertical monitoring of traffic-related air pollution (TRAP) in urban street canyons of Hong Kong. / WONG, Paulina P.Y.; LAI, Poh Chin; ALLEN, Ryan; CHENG, Wei; LEE, Martha; TSUI, Anthony; TANG, Robert; THACH, Thuan Quoc; TIAN, Linwei; BRAUER, Michael; BARRATT, Benjamin.

In: Science of the Total Environment, Vol. 670, 20.06.2019, p. 696-703.

Research output: Journal PublicationsJournal Article (refereed)Researchpeer-review

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AU - ALLEN, Ryan

AU - CHENG, Wei

AU - LEE, Martha

AU - TSUI, Anthony

AU - TANG, Robert

AU - THACH, Thuan Quoc

AU - TIAN, Linwei

AU - BRAUER, Michael

AU - BARRATT, Benjamin

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AB - Rapid urbanization has significantly increased air pollution especially in urban regions with high traffic volumes. Existing methods for estimating traffic-related air pollution (TRAP) and TRAP-related health impacts are based on two-dimensional modelling. This paper describes a point-based methodology to monitor vertical pollutant concentrations in typical street canyons of Hong Kong. It explains the conceptual design, monitoring strategy and selection criteria for a limited number of receptor locations in street canyons to undertake field measurements for both outdoor exposure and indoor infiltration. It also expounds on the limitations and complications associated with field instrumentation and retention of participating home units. The empirical results were applied on the building infiltration efficiencies assessment. It is concluded that the cost-effective field methodology developed in this paper expects to strike a balance between exposure error and limited data locations. These findings will have important implications in future monitoring design of vertical TRAP exposure to support health studies.

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