DOI: 10.1016/j.atmosenv.2014.08.012
Scopus记录号: 2-s2.0-84905651197
论文题名: NOx profile around a signalized intersection of busy roadway
作者: Kim K ; H ; , Lee S ; -B ; , Woo S ; H ; , Bae G ; -N
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 97 起始页码: 144
结束页码: 154
语种: 英语
英文关键词: Intersection
; On-road measurement
; Traffic control
; Urban air pollution
Scopus关键词: Air pollution
; Intersections
; Normal distribution
; Traffic control
; Traffic control
; Function of time
; Horizontal distribution
; Peak concentrations
; Pollution level
; Signalized intersection
; Three categories
; Traffic flow patterns
; Urban air pollution
; Street traffic control
; Intersections
; nitrogen oxide
; atmospheric pollution
; concentration (composition)
; pollution exposure
; pollution incidence
; pollution monitoring
; roadside environment
; signal
; spatial distribution
; urban pollution
; nitrogen oxides
; road transport
; traffic emission
; traffic management
; acceleration
; air pollutant
; air pollution
; article
; car driving
; deceleration
; environmental exposure
; motor vehicle
; pedestrian
; priority journal
; spatial analysis
; traffic
; air quality
; Article
; concentration (parameters)
; exhaust gas
; greenhouse gas
; human
; meteorology
; quasi experimental study
; urban area
; wind
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: The NOx pollution profile around a signalized intersection of a busy roadway was investigated to understand the effect of traffic control on urban air pollution. Traffic flow patterns were classified into three categories of quasi-cruising, a combination of deceleration and acceleration, and a combination of deceleration, idling, and acceleration. The spatial distribution of air pollution levels around an intersection could be represented as a quasi-normal distribution, whose peak height was aggravated by increased emissions due to transient driving patterns. The peak concentration of NOx around the signalized intersection for the deceleration, idling, and acceleration category was five times higher than that for the quasi-cruising category. Severe levels of NOx pollution tailed off approximately 400m from the center of the intersection. Approximately 200-1000ppb of additional NOx was observed when traffic was decelerating, idling, and accelerating within the intersection zone, resulting in high exposure levels for pedestrians around the intersection. We propose a fluctuating horizontal distribution of motor vehicle-induced air pollutants as a function of time. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80907
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, South Korea
Recommended Citation:
Kim K,H,, Lee S,et al. NOx profile around a signalized intersection of busy roadway[J]. Atmospheric Environment,2014-01-01,97