DOI: 10.1016/j.atmosenv.2015.01.048
Scopus记录号: 2-s2.0-84921833140
论文题名: Numerical simulation of the interaction between ammonium nitrate aerosol and convective boundary-layer dynamics
作者: Barbaro E ; , Krol M ; C ; , Vilà-Guerau de Arellano J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 105 起始页码: 202
结束页码: 211
语种: 英语
英文关键词: Aerosol nitrate deposition
; Convective boundary-layer dynamics
; Gas-aerosol conversion
; Large-Eddy simulation
; Reactive turbulent exchange coefficient
Scopus关键词: Air quality
; Atmospheric thermodynamics
; Boundary layer flow
; Boundary layers
; Budget control
; Deposition
; Dynamics
; Large eddy simulation
; Nitrates
; Quality control
; Aerosol absorption
; Aerosol nitrates
; Atmospheric research
; Convective boundary layers
; Deposition velocities
; Exchange coefficients
; Short-wave radiation
; Surface observation
; Aerosols
; ammonium nitrate
; black carbon
; aerosol composition
; atmospheric convection
; atmospheric pollution
; black carbon
; convective boundary layer
; numerical model
; turbulent flow
; vertical profile
; absorption
; aerosol
; Article
; atmospheric deposition
; boundary layer
; chemical interaction
; concentration (parameters)
; dosimetry
; dry deposition
; energy conversion
; environmental radioactivity
; gas analysis
; large eddy simulation
; mathematical analysis
; mathematical model
; physical chemistry
; priority journal
; surface property
; thermodynamics
; turbulent flow
; Cabauw
; Netherlands
; Utrecht [Netherlands]
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: We investigate the interaction between the ammonium nitrate aerosol (NAO3) abundance and convective boundary-layer (CBL) dynamics by means of a large-eddy simulation (LES) framework. In our LES model the CBL dynamics is solved coupled with radiation, chemistry, and surface exchange. Concerning the aerosol coupling we assume a simplified representation that accounts for black carbon, aerosol water and inorganic aerosols, focusing on the semi-volatile ammonium nitrate aerosol within the CBL. The aerosol absorption and scattering of shortwave radiation is also taken into consideration. We use a data set of observations taken at the Cabauw Experimental Site for Atmospheric Research during the IMPACT/EUCAARI (European Integrated Project on Aerosol, Cloud, Climate, and Air Quality Interactions) campaign to successfully evaluate our LES approach. We highlight that our LES framework reproduces the observations of the ratio between gas-phase nitrate and total nitrate at the surface, with a diurnally-averaged overestimation of only ≈12%. We show that the dependence between gas-aerosol conversion of nitrate and CBL (thermo)dynamics produces highly non-linear concentration and turbulent flux vertical profiles. The flux profiles maximize at around 1/3 of the CBL. Close to the surface, we show that the outgassing of NAO3 affects the dry deposition of nitrate. This outgassing is responsible for the high deposition velocities obtained from the concentration and flux measurements during observational campaigns. To account for the influence of CBL (thermo)dynamics on gas-aerosol conversion we propose an effective turbulent exchange coefficient based on an analysis of the flux budget equation of aerosol nitrate calculated by our LES. The implementation of this effective turbulent exchange coefficient in a 1D model leads to a better agreement with the LES results and with surface observations. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81985
Appears in Collections: 气候变化事实与影响
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作者单位: Meteorology and Air Quality Section, Wageningen University, Netherlands; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Netherlands
Recommended Citation:
Barbaro E,, Krol M,C,et al. Numerical simulation of the interaction between ammonium nitrate aerosol and convective boundary-layer dynamics[J]. Atmospheric Environment,2015-01-01,105