DOI: 10.1016/j.atmosenv.2018.01.049
Scopus记录号: 2-s2.0-85042201567
论文题名: Spatial and temporal disaggregation of the on-road vehicle emission inventory in a medium-sized Andean city. Comparison of GIS-based top-down methodologies
作者: Gómez C ; D ; , González C ; M ; , Osses M ; , Aristizábal B ; H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 179 起始页码: 142
结束页码: 155
语种: 英语
英文关键词: Emission inventories
; Geographic information systems
; Medium-sized cities
; On-road vehicular emissions
; Top-down methods
Scopus关键词: Air quality
; Decision making
; Geographic information systems
; Housing
; Information management
; Particles (particulate matter)
; Pollution
; Roads and streets
; Spatial distribution
; Traffic control
; Urban transportation
; Vehicles
; Emission inventories
; Medium-sized cities
; On-road vehicle emissions
; Public policy decisions
; Spatial and temporal distribution
; Spatial disaggregation
; Top-down methods
; Vehicular emission
; Air pollution
; air quality
; atmospheric modeling
; comparative study
; emission inventory
; GIS
; pollutant source
; public transport
; spatiotemporal analysis
; top-down approach
; traffic emission
; urban pollution
; air quality
; Article
; car driving
; Colombia
; geographic information system
; industrial area
; motorcycle
; particulate matter
; priority journal
; traffic
; Andes
; Caldas
; Colombia
; Manizales
; South America
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: Emission data is an essential tool for understanding environmental problems associated with sources and dynamics of air pollutants in urban environments, especially those emitted from vehicular sources. There is a lack of knowledge about the estimation of air pollutant emissions and particularly its spatial and temporal distribution in South America, mainly in medium-sized cities with population less than one million inhabitants. This work performed the spatial and temporal disaggregation of the on-road vehicle emission inventory (EI) in the medium-sized Andean city of Manizales, Colombia, with a spatial resolution of 1 km × 1 km and a temporal resolution of 1 h. A reported top-down methodology, based on the analysis of traffic flow levels and road network distribution, was applied. Results obtained allowed the identification of several hotspots of emission at the downtown zone and the residential and commercial area of Manizales. Downtown exhibited the highest percentage contribution of emissions normalized by its total area, with values equal to 6% and 5% of total CO and PM10 emissions per km2 respectively. These indexes were higher than those obtained in residential-commercial area with values of 2%/km2 for both pollutants. Temporal distribution showed strong relationship with driving patterns at rush hours, as well as an important influence of passenger cars and motorcycles in emissions of CO both at downtown and residential-commercial areas, and the impact of public transport in PM10 emissions in the residential-commercial zone. Considering that detailed information about traffic counts and road network distribution is not always available in medium-sized cities, this work compares other simplified top-down methods for spatially assessing the on-road vehicle EI. Results suggested that simplified methods could underestimate the spatial allocation of downtown emissions, a zone dominated by high traffic of vehicles. The comparison between simplified methods based on total traffic counts and road density distribution suggested that the use of total traffic counts in a simplified form could enhance higher uncertainties in the spatial disaggregation of emissions. Results obtained could add new information that help to improve the air pollution management system in the city and contribute to local public policy decisions. Additionally, this work provides appropriate resolution emission fluxes for ongoing research in atmospheric modeling in the city, with the aim to improve the understanding of transport, transformation and impacts of pollutant emissions in urban air quality. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82998
Appears in Collections: 气候变化事实与影响
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作者单位: Hydraulic Engineering and Environmental Research Group, Universidad Nacional de Colombia Sede Manizales, Cra 27 64-60 Bloque H Palogrande, Manizales, Colombia; Departamento de Ingeniería Mecánica, Universidad Técnica Federico Santa María, Vicuña Mackenna 3939, Santiago, Chile
Recommended Citation:
Gómez C,D,, González C,et al. Spatial and temporal disaggregation of the on-road vehicle emission inventory in a medium-sized Andean city. Comparison of GIS-based top-down methodologies[J]. Atmospheric Environment,2018-01-01,179