DOI: 10.1016/j.atmosenv.2015.10.090
Scopus记录号: 2-s2.0-84946567920
论文题名: Simulation of atmospheric dispersion of NOX over complex terrain region of Ranchi with FLEXPART-WRF by incorporation of improved turbulence intensity relationships
作者: Madala S ; , Satyanarayana A ; N ; V ; , Srinivas C ; V
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123 起始页码: 139
结束页码: 155
语种: 英语
英文关键词: Air quality
; Complex terrain
; FLEXPART-WRF
; Turbulence intensity
Scopus关键词: Air quality
; Atmospheric movements
; Atmospheric thermodynamics
; Boundary layers
; Environmental management
; Landforms
; Nitrogen oxides
; Pollution
; Turbulence
; Air pollution dispersion
; Complex terrains
; FLEXPART
; Ground level concentrations
; Lagrangian particle dispersion model
; Meteorological parameters
; Turbulence intensity
; Turbulence parameterization
; Air pollution
; nitrogen oxide
; air quality
; atmospheric modeling
; boundary layer
; concentration (composition)
; dispersion
; environmental management
; parameterization
; pollution monitoring
; seasonal variation
; terrain
; turbulence
; air pollutant
; air pollution
; air quality
; Article
; atmospheric dispersion
; boundary layer
; flexpart wrf
; India
; meteorology
; multidimensional scaling
; priority journal
; process design
; seasonal variation
; surface property
; India
; Jharkhand
; Ranchi
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: Accurate representation of air pollutant dispersion is essential for environmental management and planning purposes. In this study, semi-empirical relationships of turbulence intensity (σu/u*, σv/u* and σw/u*) as a function of surface layer scaling and local stability are developed following boundary layer similarity concepts at Ranchi, a complex terrain in Jharkhand, Eastern India for various seasons. The impact of the new turbulence parameterization for air pollution dispersion simulation is studied by incorporating the same in the Hanna scheme of FLEXPART-WRF Lagrangian Particle dispersion model over study region. The model is used to estimate the ground level concentrations of nitrogen oxides (NOx) due to industrial and vehicular sources in study region. The meteorological parameters needed in air-quality simulation are simulated using the Advanced Research WRF (ARW) mesoscale model at high resolution (3 km). Three turbulence schemes (YSU, MYNN2 and ACM2) in ARW are alternatively tested in dispersion simulation and comparisons are made with available air quality data for eight days in different seasons (winter, pre-monsoon, monsoon and post-monsoon). Simulations with FLEXPART revealed distinct seasonal variation of dispersion patterns. It has been found that the new turbulence intensity relationships in FLEXPART improved the NOx concentration estimates by reducing the negative bias seen with default Hanna scheme. Further, the ARW simulated meteorological parameters using ACM2 and MYNN2 significantly reduced the bias in modeled pollutant concentrations. The study demonstrates the utility of high quality seasonal turbulence measurements in pollution dispersion model for better diffusion parameterization needed in air quality modeling. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81328
Appears in Collections: 气候变化事实与影响
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作者单位: Centre for Oceans, Rivers, Atmosphere and Land Sciences, Indian Institute of Technology Kharagpur, Kharagpur, India; Radiology and Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
Recommended Citation:
Madala S,, Satyanarayana A,N,et al. Simulation of atmospheric dispersion of NOX over complex terrain region of Ranchi with FLEXPART-WRF by incorporation of improved turbulence intensity relationships[J]. Atmospheric Environment,2015-01-01,123