DOI: 10.1016/j.atmosenv.2019.117098
论文题名: Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes
作者: Quan J. ; Dou Y. ; Zhao X. ; Liu Q. ; Sun Z. ; Pan Y. ; Jia X. ; Cheng Z. ; Ma P. ; Su J. ; Xin J. ; Liu Y.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 221 语种: 英语
英文关键词: Aircraft instruments
; Atmospheric boundary layer
; Atmospheric thermodynamics
; Meteorological instruments
; Pollution
; Topography
; Vortex flow
; Atmospheric pollutants
; Backscatter profiles
; Comprehensive measurement
; Elevated pollutant layer
; Meteorological variables
; Planetary boundary layers
; Regional pollutants
; Vertical vortex
; Atmospheric movements
; carbon monoxide
; nitrogen dioxide
; ozone
; sulfate
; aerosol
; atmospheric pollution
; backscatter
; boundary layer
; instrumentation
; pollutant transport
; radiosonde
; vortex
; aerosol
; air pollutant
; air pollution
; altitude
; Article
; atmospheric transport
; boundary layer
; China
; circadian rhythm
; environmental temperature
; meteorology
; particulate matter
; priority journal
; topography
; weather
; wind
; wind speed
; Beijing [China]
; China
; North China Plain
学科: Elevated pollutant layer
; PBL
; Regional pollutant transport
; Vertical vortex
中文摘要: Comprehensive measurements were conducted in winter 2018 and combined with RMPAS-Chem model simulations to analyze the regional transport mechanisms of atmospheric pollutants over the North China Plain. The instruments used consisted of four Vaisala CL51 ceilometers for planetary boundary layer (PBL) heights and aerosol backscatter profiles, two wind profilers, one radiosonde for the profiles of meteorological variables, and an instrumented King-Air 350 aircraft for the profiles of atmospheric pollutants and meteorological variables. Additionally, observations from Environmental Protection Bureau stations were also analyzed, including hourly concentrations of surface PM2.5, SO2, NO2, CO, and O3. The results suggest that regional atmospheric pollutant transport is driven by a combination of topography and PBL processes. First, a mountain-induced vertical vortex forms over downwind regions; this elevates ground pollutants to form an elevated pollutant layer (EPL) at an altitude of 1.4–1.7 km. The EPL is then transported to Beijing via an enhanced southerly wind. Finally, the pollutants in the EPL are transported downward to the surface through PBL processes. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/161102
Appears in Collections: 气候变化与战略
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作者单位: Institute of Urban Meteorology, CMA, Beijing, China; Beijing Key Laboratory of Cloud, Precipitation, and Atmospheric Water Resources, Beijing, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Brookhaven National Laboratory, Upton, NY, United States
Recommended Citation:
Quan J.,Dou Y.,Zhao X.,et al. Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes[J]. Atmospheric Environment,2020-01-01,221