Abst'/> A WRF-Chem model study of the impact of VOCs emission of a huge petrochemical industrial zone on the summertime ozone in Beijing, China
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A WRF-Chem model study of the impact of VOCs emission of a huge petrochemical industrial zone on the summertime ozone in Beijing, China

机译：WRF-Chem模型研究巨大石化工业区的VOC排放对北京夏季臭氧的影响

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摘要

AbstractIn China, petro-chemical manufacturing plants generally gather in the particular industrial zone defined as PIZ in some cities, and distinctly influence the air quality of these cities for their massive VOCs emissions. This study aims to quantify the local and regional impacts of PIZ VOCs emission and its relevant reduction policy on the surface ozone based on WRF-Chem model, through the case study of Beijing. Firstly, the model simulation under the actual precursors’ emissions over Beijing region for July 2010 is conducted and evaluated, which meteorological and chemical predictions both within the thresholds for satisfactory model performance. Then, according to simulated H2O2/HNO3ratio, the nature of photochemical ozone formation over Beijing is decided, the VOCs-sensitive regime over the urban areas, NOx-sensitive regime over the northern and western rural areas, and both VOCs and NOx-mixed sensitive regime over the southern and eastern rural areas. Finally, a 30% VOCs reduction scenario (RS) and a 100% VOCs reduction scenario (ZS) for Beijing PIZ are additional simulated by WRF-Chem. The sensitivity simulations imply that the current 30% reduction policy would bring about an O3increase in the southern and western areas (by +4.7 ppb at PIZ site and +2.1 ppb at LLH station), and an O3decrease in the urban center (by −1.7 ppb at GY station and −2.5 ppb at DS station) and in the northern and eastern areas (by −1.2 ppb at MYX station), mainly through interfering with the circulation of atmospheric HOx radicals. While the contribution of the total VOCs emission of PIZ to ozone is greatly prominent in the PIZ and its surrounding areas along south-north direction (12.7% at PIZ site on average), but slight in the other areas of Beijing (<3% in other four stations on average).Graphical abstractDisplay OmittedHighlights•WRF-Chem simulations are conducted to quantify the impact of the PIZ VOCs emission on ozone in Beijing, China.•The 30% VOCs reduction policy on the PIZ will bring about an O3increase in the southern and western areasof Beijing.•The contribution of the PIZ VOCs emission to ozone is positive, especially in PIZ and its surrounding areas.
机译： 摘要 在中国，石化制造厂通常聚集在某些城市中定义为PIZ的特定工业区中，并明显影响空气质量这些城市中的大量VOC排放。本研究旨在通过WRF-Chem模型，量化PIZ VOCs排放对当地和区域的影响及其相关的减排政策，以WRF-Chem模型为基础。首先，进行并评估了在2010年7月北京地区实际前兆排放量下的模型模拟，这些气象和化学预测均在令人满意的模型性能阈值之内。然后，根据模拟的H 2 O 2 / HNO 3 比率，决定了北京上空的光化学臭氧形成的性质，城市地区对VOCs敏感的体制，北部和西部农村地区对NOx敏感的体制以及VOCs和NOx两者南部和东部农村地区的混合敏感政权。最后，WRF-Chem还模拟了北京PIZ的30％VOCs减少方案（RS）和100％VOCs减少方案（ZS）。敏感性模拟表明，当前的30％减少政策将使南部和西部地区的O 3 增加（在PIZ站点增加+4.7 ppb，而+ LLH站为2.1 ppb），城市中心的O 3 减少（GY站为-1.7 ppb，DS站为-2.5 ppb）北部和东部地区（MYX台站为−1.2 ppb），主要是通过干扰大气HOx自由基的循环。尽管PIZ及其周边地区沿南北方向对PIZ的总VOC排放量对臭氧的贡献非常显着（PIZ站点平均为12.7％），但在北京其他地区则微不足道（北京地区<3％平均其他四个站点）。 图形摘要 省略显示 突出显示 < ce：abstract-sec id =“ abssec0020” view =“ all”> • 进行WRF-Chem模拟以量化中国北京的PIZ VOC排放对臭氧的影响。 • PIZ降低30％VOC的政策将使O 3 增加 • PIZ VOC排放物对臭氧的贡献是积极的，尤其是在PIZ及其周边地区。

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  • 来源
    《Atmospheric environment》 |2018年第2期|44-53|共10页
  • 作者

    Wei Wei; Zhao Feng Lv; Yue Li; Li Tao Wang; Shuiyuan Cheng; Huan Liu;

  • 作者单位

    Department of Environmental Science and Engineering, Beijing University of Technology,Key Laboratory of Beijing on Regional Air Pollution Control;

    Department of Environmental Science and Engineering, Beijing University of Technology,School of Environment, Tsinghua University;

    Department of Environmental Science and Engineering, Beijing University of Technology;

    Department of Environmental Engineering, School of City Construction, Hebei University of Engineering;

    Department of Environmental Science and Engineering, Beijing University of Technology,Key Laboratory of Beijing on Regional Air Pollution Control;

    School of Environment, Tsinghua University;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    VOCs; Petro-chemical industry; Surface ozone; WRF-Chem; Beijing;

    机译：VOCs;石油化工;表面臭氧;WRF-Chem;北京;

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