DOI: 10.1016/j.atmosenv.2014.01.034
Scopus记录号: 2-s2.0-84896898693
论文题名: Sensitivity of predicted pollutant levels to anthropogenic heat emissions in Beijing
作者: Yu M ; , Carmichael G ; R ; , Zhu T ; , Cheng Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 89 起始页码: 169
结束页码: 178
语种: 英语
英文关键词: Air quality model
; Anthropogenic heat
; Ozone
; WRF/Chem
Scopus关键词: Air quality modeling
; Anthropogenic heat
; Parameterization method
; Planetary boundary layers
; Surface ozone concentrations
; Temperature prediction
; Vertical distributions
; WRF/Chem
; Air quality
; Atmospheric temperature
; Forecasting
; Pollution
; Rural areas
; Ozone
; ozone
; air quality
; anthropogenic source
; atmospheric modeling
; atmospheric pollution
; boundary layer
; concentration (composition)
; heat flux
; ozone
; parameterization
; sensitivity analysis
; urban atmosphere
; air pollutant
; air pollution
; air quality
; air temperature
; anthropogenic heat
; article
; boundary layer
; China
; circadian rhythm
; controlled study
; energy balance
; environmental protection
; heat
; land use
; meteorology
; population growth
; precipitation
; predictive value
; priority journal
; rural area
; simulation
; urban area
; Beijing [China]
; China
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: A new parameterization method for anthropogenic heat (AH) parameterization (called NewLUCY) is developed in the WRF-Chem model, which estimates hourly heat fluxes with a single-peak diurnal variation pattern and utilizes updated urban built-up land use data. The impacts of accounting for anthropogenic heat (AH) fluxes on the meteorology and air quality of the Greater Beijing area are studied using this upgraded WRF-Chem model system. Including AH is shown to increase the surface temperature by 0.8°C in daytime and 1.2 °C at nighttime. The Planetary Boundary Layer (PBL) heights are also increased, with a maximum incrementation exceeding 320m during daytime and 160m at night. Spatial and vertical distributions of the simulated pollutants are also impacted by the AH. Surface ozone concentrations increase in the urban areas (4ppb for daytime and 18ppb for nighttime) when AH is included in the analyses. Moreover, the impacts of AH are not limited to the urban centers, but extend regionally. For example, the simulated PM2.5 concentrations increase in the rural areas as well, due to a decrease in rural precipitation rates when AH is included. In general, incorporation of AH increases the accuracy of the predictions comparing to the observations. At the Peking University site (PKU), the mean error (ME) of the 2-m temperature prediction is reduced from 1.55°C to 0.61°C. The predictions of the high ozone episodes are also improved. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80639
Appears in Collections: 气候变化事实与影响
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作者单位: College of Engineering, University of Iowa, Iowa City 52246, IA, United States; Center for Global and Regional Environmental Research, University of Iowa, Iowa City 52246, IA, United States; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz D-55128, Germany
Recommended Citation:
Yu M,, Carmichael G,R,et al. Sensitivity of predicted pollutant levels to anthropogenic heat emissions in Beijing[J]. Atmospheric Environment,2014-01-01,89