DOI: 10.1016/j.atmosenv.2014.10.059
Scopus记录号: 2-s2.0-84910007870
论文题名: Urban air quality simulation in a high-rise building area using a CFD model coupled with mesoscale meteorological and chemistry-transport models
作者: Kwak K ; -H ; , Baik J ; -J ; , Ryu Y ; -H ; , Lee S ; -H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 100 起始页码: 167
结束页码: 177
语种: 英语
英文关键词: CFD model
; CMAQ model
; High-rise building area
; Integrated urban air quality modeling system
; Urban air quality
; WRF model
Scopus关键词: Air
; Air quality
; Atmospheric movements
; Computational chemistry
; Computational fluid dynamics
; Geometry
; Nitrogen oxides
; Pollution
; Tall buildings
; Transport properties
; Urban transportation
; Weather forecasting
; CFD modeling
; Cmaq models
; High rise building
; Urban air quality
; WRF Model
; Computer simulation
; nitrate
; nitrogen dioxide
; air quality
; atmospheric modeling
; computational fluid dynamics
; multistorey building
; nitrogen dioxide
; ozone
; pollutant source
; pollutant transport
; spatial variation
; urban atmosphere
; vertical mixing
; air monitoring
; air quality
; Article
; building
; community multiscale air quality model
; computational fluid dynamics
; concentration (parameters)
; exhaust gas
; pollution transport
; simulation
; South Korea
; urban area
; weather research and forecasting model
; Seoul [South Korea]
; South Korea
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: An integrated urban air quality modeling system is established by coupling a computational fluid dynamics (CFD) model with mesoscale meteorological and chemistry-transport models. The mesoscale models used are the weather research and forecasting (WRF) model and the community multiscale air quality (CMAQ) model, which provide the initial and time-dependent boundary conditions for the CFD model. For the consistency of chemical processes in the CFD and CMAQ models, the same chemical mechanism used in the CMAQ model is implemented in the CFD model. Urban air quality simulations are performed from 0900 to 1800LT on 3 June 2010 in a high-rise building area of Seoul, Republic of Korea, where mobile emission sources are concentrated. The NO2 and O3 concentrations in the CFD simulation are evaluated with data measured at a roadside air quality monitoring station, showing better agreements than those in the CMAQ simulation. The NO2 and O3 concentration fields exhibit high spatial variabilities in the high-rise building area. The spatial variabilities near the surfaces are strongly associated with the heterogeneity of mobile emission on roads, whereas the spatial variabilities near the top of high-rise buildings are strongly associated with the heterogeneity of building geometry. The average NO2 and O3 concentrations (46 and 30ppb, respectively, at z=30m) near the surfaces are considerably different from the NO2 and O3 concentrations in the CMAQ simulation (17 and 44ppb, respectively, at z=30m), implying the insufficient urban surface representation in the CMAQ simulation. The heterogeneity of building geometry is found to enhance the vertical pollutant transport, whereas the heterogeneity of mobile emission is found to confine emitted pollutants near the surfaces. When the vertical mixing is efficient, the O3 concentration decreases in substantial vertical ranges with the same amount of NOx emission. The integrated urban air quality modeling system realistically simulates the spatial variabilities associated with the local influences of building geometry and mobile emission. This is a promising modeling approach that accounts for multiscale influences on urban air quality. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82108
Appears in Collections: 气候变化事实与影响
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作者单位: School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Department of Civil and Environmental Engineering, Princeton UniversityNJ, United States; Department of Atmospheric Science, Kongju National University, Gongju, South Korea
Recommended Citation:
Kwak K,-H,, Baik J,et al. Urban air quality simulation in a high-rise building area using a CFD model coupled with mesoscale meteorological and chemistry-transport models[J]. Atmospheric Environment,2015-01-01,100