Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes

Quan, Jiannong; Dou, Youjun; Zhao, Xiujuan; Liu, Quan; Sun, Zhaobin; Pan, Yubing; Jia, Xingcan; Cheng, Zhigang; Ma, Pengkun; Su, Jie; Xin, Jinyuan; Liu, Yangang

doi:10.1016/j.atmosenv.2019.117098

Title: Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes

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Abstract

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 PM_2.5, 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. Lastly, the pollutants in the EPL are transported downward to the surface through PBL processes.

Authors:

Quan, Jiannong ^[1]; Dou, Youjun ^[1]; Zhao, Xiujuan ^[1];

^[2];

^[1]; Pan, Yubing ^[1]; Jia, Xingcan ^[1]; Cheng, Zhigang ^[1]; Ma, Pengkun ^[1]; Su, Jie ^[1]; Xin, Jinyuan ^[3];

^[4]

Inst. of Urban Meteorology, CMA, Beijing (China)
Beijing Key Laboratory of Cloud, Beijing (China)
Chinese Academy of Sciences (CAS), Beijing (China)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Publication Date:: Tue Nov 05 00:00:00 EST 2019

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Biological and Environmental Research (BER)

OSTI Identifier:: 1583100

Report Number(s):: BNL-213533-2020-JAAM
Journal ID: ISSN 1352-2310

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Atmospheric Environment (1994)

Additional Journal Information:: Journal Name: Atmospheric Environment (1994); Journal Volume: 221; Journal Issue: C; Journal ID: ISSN 1352-2310

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; Vertical vortex; Elevated pollutant layer; PBL; Regional pollutant transport

Citation Formats


                    Quan, Jiannong, Dou, Youjun, Zhao, Xiujuan, Liu, Quan, Sun, Zhaobin, Pan, Yubing, Jia, Xingcan, Cheng, Zhigang, Ma, Pengkun, Su, Jie, Xin, Jinyuan, and Liu, Yangang. Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes.  United States: N. p., 2019. 
Web.  doi:10.1016/j.atmosenv.2019.117098.

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                    Quan, Jiannong, Dou, Youjun, Zhao, Xiujuan, Liu, Quan, Sun, Zhaobin, Pan, Yubing, Jia, Xingcan, Cheng, Zhigang, Ma, Pengkun, Su, Jie, Xin, Jinyuan, & Liu, Yangang. Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes.  United States.  https://doi.org/10.1016/j.atmosenv.2019.117098

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                    Quan, Jiannong, Dou, Youjun, Zhao, Xiujuan, Liu, Quan, Sun, Zhaobin, Pan, Yubing, Jia, Xingcan, Cheng, Zhigang, Ma, Pengkun, Su, Jie, Xin, Jinyuan, and Liu, Yangang. Tue .  
"Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes".  United States.  https://doi.org/10.1016/j.atmosenv.2019.117098.  https://www.osti.gov/servlets/purl/1583100.

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@article{osti_1583100,

  title        = {Regional atmospheric pollutant transport mechanisms over the North China Plain driven by topography and planetary boundary layer processes},

  author       = {Quan, Jiannong and Dou, Youjun and Zhao, Xiujuan and Liu, Quan and Sun, Zhaobin and Pan, Yubing and Jia, Xingcan and Cheng, Zhigang and Ma, Pengkun and Su, Jie and Xin, Jinyuan and Liu, Yangang},

  abstractNote = {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. Lastly, the pollutants in the EPL are transported downward to the surface through PBL processes.},

  doi          = {10.1016/j.atmosenv.2019.117098},

  journal      = {Atmospheric Environment (1994)},

  number       = C,

  volume       = 221,

  place        = {United States},

  year         = {Tue Nov 05 00:00:00 EST 2019},

  month        = {Tue Nov 05 00:00:00 EST 2019}

}

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