DOI: 10.1016/j.atmosenv.2015.07.036
Scopus记录号: 2-s2.0-84938693344
论文题名: On the modeling of atmospheric pollutant dispersion during a diurnal cycle: A finite element study
作者: Albani R ; A ; S ; , Duda F ; P ; , Pimentel L ; C ; G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 118 起始页码: 19
结束页码: 27
语种: 英语
英文关键词: Atmospheric boundary layer
; Atmospheric dispersion
; Galerkin least square methods
Scopus关键词: Advection
; Air pollution
; Atmospheric boundary layer
; Atmospheric structure
; Balloons
; Boundary layers
; Finite element method
; Least squares approximations
; Numerical methods
; Numerical models
; Pollution
; Radioactivity
; Thermoelectricity
; Wind
; Advection-diffusion equation
; Atmospheric dispersion
; Atmospheric pollutants
; Atmospheric stability
; Galerkin Least Squares
; Meteorological parameters
; Pollutant dispersions
; Stabilized finite element
; Atmospheric movements
; advection-diffusion equation
; atmospheric modeling
; boundary layer
; least squares method
; literature review
; model validation
; numerical model
; parameterization
; pollutant source
; radioactive decay
; advection
; Article
; atmospheric dispersion
; boundary layer
; circadian rhythm
; controlled study
; dispersion
; dry deposition
; meteorology
; pollutant
; prairie
; priority journal
; 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: In this paper, we present a numerical model to study pollutant dispersion in the atmospheric boundary layer (ABL). The model accounts for the mechanisms of advection by the mean wind in the horizontal direction, turbulent diffusion in the vertical direction to ground surface, dry deposition, and radioactive decay. More importantly, the model is capable of accounting for the evolution of the ABL structure over a diurnal cycle by considering parameterizations for the wind-speed and eddy-diffusivity profiles that depend on the atmospheric stability condition, which in turn undergoes dramatic changes throughout the day. To solve the resulting advection-diffusion equation, we propose a numerical method based on a stabilized finite element formulation. After validating the numerical model by simulating classical experiments and comparing its predictions with those available in literature, we study the dispersion of a pollutant during a full diurnal ABL cycle with the meteorological parameters generated by AERMET for a 24-h period on a 1-h basis. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81575
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Mechanical Engineering, COPPE, Federal University of Rio de Janeiro, Centro de Tecnologia, Bloco G, Rio de Janeiro, RJ, Brazil; Computational Nucleus for Air Quality Studies (NCQAr), Department of Meteorology, IGEO, Federal University of Rio de Janeiro, CCMN, Bloco H, Rio de Janeiro, RJ, Brazil
Recommended Citation:
Albani R,A,S,et al. On the modeling of atmospheric pollutant dispersion during a diurnal cycle: A finite element study[J]. Atmospheric Environment,2015-01-01,118