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Title:

Spatiotemporal Variation and Influencing Factors on Fine Particulate Matter and Carbon Monoxide Near a Road Intersection in Shanghai, China

Accession Number:

01589984

Record Type:

Component

Abstract:

The minute-scale variations of fine particulate matter (PM₂.₅) and carbon monoxide (CO) concentrations near a road intersection in Shanghai, China were investigated so as to identify the influencing factors at three traffic periods. Measurement results demonstrate a synchronous variation of pollutant concentrations at the roadside and setbacks, and the average concentration of PM₂.₅ at the roadside is 7% (44% for CO) higher than that at setbacks within 500m from the intersection. The pollution level at traffic peaks is also found to be higher than that in the midday off-peak period, and the morning hours are found to be the most polluted period due to a large amount of diesel vehicles and unfavorable dispersion conditions. Partial least square regressions were constructed between influencing factors and setback pollutant concentrations, which indicates that the meteorological factors are the most significant, followed by setback distance from the intersection, and traffic factors rank behind. Besides, CO is found to be sensitive to distance from the traffic source and vehicle category and highly dependent on local traffic conditions, whereas PM₂.₅ is more originated from other sources and background levels. These findings demonstrate the importance of localized factors in understanding spatiotemporal pattern of air pollution at intersections, and support decision makers in the roadside pollution management and control.

Supplemental Notes:

This paper was sponsored by TRB committee ADC20 Standing Committee on Transportation and Air Quality. Alternate title: Investigation of the Spatial-temporal Variation and Influencing Factors on Fine Particulate Matter and Carbon Monoxide Concentrations near a Road Intersection

Monograph Accession #:

01584066

Report/Paper Numbers:

16-6169

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Wang, Zhanyong
Liu, Qing-Chang
Ya Gao, Master
Peng, Zhong-Ren

Pagination:

21p

Publication Date:

2016

Conference:

Transportation Research Board 95th Annual Meeting

Location: Washington DC, United States
Date: 2016-1-10 to 2016-1-14
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Spatiotemporal analysis

Geographic Terms:

Shanghai (China)

Subject Areas:

Environment; Highways; I15: Environment

Source Data:

Transportation Research Board Annual Meeting 2016 Paper #16-6169

Files:

TRIS, TRB, ATRI

Created Date:

Jan 12 2016 6:43PM