气候变化领域集成服务门户(CCPortal): Evaluation of WRF-Chem simulations on vertical profiles of PM2.5 with UAV observations during a haze pollution event

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DOI	10.1016/j.atmosenv.2021.118332
	Evaluation of WRF-Chem simulations on vertical profiles of PM2.5 with UAV observations during a haze pollution event
	Liu C.; Huang J.; Hu X.-M.; Hu C.; Wang Y.; Fang X.; Luo L.; Xiao H.-W.; Xiao H.-Y.
发表日期	2021
ISSN	1352-2310
卷号	252
英文摘要	Accurate simulation of PM2.5 vertical distribution is crucial to understand the formation, transport, and dispersion mechanisms of aerosols, and protect the public from exposure to high levels of air pollutants. While most of the current model evaluations are limited to near-surface variables, vertical profiles of simulated PM2.5 are rarely evaluated. In this study, the measurements with unmanned aerial vehicle (UAV) are used to evaluate the WRF-Chem simulated vertical profiles of PM2.5, potential temperature, water vapor, and winds while surface meteorological fields and air pollutants are evaluated with various observational data during a heavy aerosol pollution episode that occurred on December 22–25, 2017 in Nanjing, China. Results show that the simulated surface meteorology and air quality agree well with the observations. Vertical profile shapes and magnitude of PM2.5 are reasonably captured by the model under the convective conditions during the daytime, but not in the nighttime. It is noticed that a well-mixed vertical structure of PM2.5 concentration, a typical feature of the daytime convective boundary layer is observed in the nocturnal boundary layer (NBL) but not captured by the WRF-Chem model and PM2.5 concentrations are over-predicted significantly during the nighttime. The over-predictions of surface PM2.5 and vertical profiles are improved substantially by increasing the minimum value of eddy diffusivity. This study indicates the importance of refinement of parameterization schemes in reproducing the ABL vertical structures and PM2.5 concentrations, especially for the NBL with heavy pollution conditions. © 2021 Elsevier Ltd
关键词	Eddy diffusivity PM2.5 vertical profiles UAV WRF-Chem
语种	英语
scopus关键词	Aerosols; Air quality; Antennas; Atmospheric movements; Boundary layers; Water pollution; Aerial vehicle; Air pollutants; Condition; Eddy Diffusivities; Nocturnal boundary layers; PM$-2.5$; PM2.5 vertical profile; Vertical profile; Vertical structures; WRF/Chem; Unmanned aerial vehicles (UAV); carbon; ozone; aerosol; air quality; convective boundary layer; haze; nocturnal boundary layer; numerical model; parameterization; particulate matter; simulation; unmanned vehicle; vertical profile; aerosol; air pollutant; air pollution; air quality; air temperature; Article; boundary layer; circadian rhythm; controlled study; eddy diffusivity; haze; humidity; land use; particulate matter 2.5; priority journal; simulation; surface property; unmanned aerial vehicle; water temperature; water vapor; Nanjing [Jiangsu]
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248505
作者单位	Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution/School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang, 330013, China; Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change (ILCEC), Nanjing University of Information Science & Technology, Nanjing, 210044, China; Center for Analysis and Prediction of Storms and School of Meteorology, University of Oklahoma, Norman, United States; College of Biology and the Environment, Joint Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China; I.M. System Group, Environmental Modeling Center, NOAA National Centers for Environmental Prediction, College ParkMD, United States; Center for Spatial Information Science and Systems, College of Science, George Mason University, Fairfax, VA, United States; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 2...
推荐引用方式 GB/T 7714	Liu C.,Huang J.,Hu X.-M.,et al. Evaluation of WRF-Chem simulations on vertical profiles of PM2.5 with UAV observations during a haze pollution event[J],2021,252.
APA	Liu C..,Huang J..,Hu X.-M..,Hu C..,Wang Y..,...&Xiao H.-Y..(2021).Evaluation of WRF-Chem simulations on vertical profiles of PM2.5 with UAV observations during a haze pollution event.ATMOSPHERIC ENVIRONMENT,252.
MLA	Liu C.,et al."Evaluation of WRF-Chem simulations on vertical profiles of PM2.5 with UAV observations during a haze pollution event".ATMOSPHERIC ENVIRONMENT 252(2021).