DOI: 10.1016/j.atmosenv.2017.04.032
Scopus记录号: 2-s2.0-85018325029
论文题名: Characterizing spatial variability of air pollution from vehicle traffic around the Houston Ship Channel area
作者: Zhang X ; , Craft E ; , Zhang K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 161 起始页码: 167
结束页码: 175
语种: 英语
英文关键词: Dispersion modeling
; MOVES
; NOx
; PM2.5
; RLINE
; Traffic-related air pollution
Scopus关键词: Aerodynamics
; Air pollution
; Automobiles
; Nitrogen oxides
; Roads and streets
; Ships
; Transportation
; Trucks
; Vehicles
; Diesel-powered vehicles
; Dispersion modeling
; Houston Ship Channel area
; Meteorological parameters
; MOVES
; RLINE
; Texas department of transportations
; Traffic-related air pollution
; Pollution
; nitric oxide
; aerodynamics
; atmospheric pollution
; concentration (composition)
; dispersion
; nitrogen oxides
; particulate matter
; pollutant source
; simulation
; spatial variation
; traffic emission
; air pollution
; Article
; autumn
; meteorology
; motor vehicle
; particulate matter
; priority journal
; seasonal variation
; simulation
; spring
; summer
; traffic
; winter
; Houston Ship Channel
; Texas
; United States
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: Mobile emissions are a major source of urban air pollution and have been associated with a variety of adverse health outcomes. The Houston Ship Channel area is the home of a large number of diesel-powered vehicles emitting fine particulate matter (PM2.5; ≤2.5 μm in aerodynamic diameter) and nitrogen oxides (NOx). However, the spatial variability of traffic-related air pollutants in the Houston Ship Channel area has rarely been investigated. The objective of this study is to characterize spatial variability of PM2.5 and NOx concentrations attributable to on-road traffic in the Houston Ship Channel area in the year of 2011. We extracted the road network from the Texas Department of Transportation Road Inventory, and calculated emission rates using the Motor Vehicle Emission Simulator version 2014a (MOVES2014a). These parameters and preprocessed meteorological parameters were entered into a Research LINE-source Dispersion Model (RLINE) to conduct a simulation. Receptors were placed at 50 m resolution within 300 m to major roads and at 150 m resolution in the rest of the area. Our findings include that traffic-related PM2.5 were mainly emitted from trucks, while traffic-related NOx were emitted from both trucks and cars. The traffic contributed 0.90 μg/m3 PM2.5 and 29.23 μg/m3 NOx to the annual average mass concentrations of on-road air pollution, and the concentrations of the two pollutants decreased by nearly 40% within 500 m distance to major roads. The pollution level of traffic-related PM2.5 and NOx was higher in winter than those in the other three seasons. The Houston Ship Channel has earlier morning peak hours and relative late afternoon hours, which indicates the influence of goods movement from port activity. The varied near-road gradients illustrate that proximities to major roads are not an accurate surrogate of traffic-related air pollution. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82562
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Epidemiology, Human Genetics and Environmental Sciences, The University of Texas Health Science Center at Houston School of Public Health, Houston, TX, United States; Environmental Defense Fund, 301 Congress Avenue, Austin, TX, United States; Southwest Center for Occupational and Environmental Health, The University of Texas Health Science Center at Houston School of Public Health, Houston, TX, United States
Recommended Citation:
Zhang X,, Craft E,, Zhang K. Characterizing spatial variability of air pollution from vehicle traffic around the Houston Ship Channel area[J]. Atmospheric Environment,2017-01-01,161