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A study of the relationship between air pollutants and inversion in the ABL over the city of Lanzhou

机译：兰州市ABL空气污染物与反演关系的研究

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摘要

By analyzing the pollutant concentrations over the urban area and over the rural area of the city of Lanzhou, Gansu Province, China, the relationships between the daytime inversion intensity and the pollutant concentration in the atmospheric boundary layer (ABL) are studied with the consideration of wind speed and direction, potential temperature, specific humidity profiles, pollutant concentration in the ABL, the surface temperature, and global radiation on the ground. It was shown that the daytime inversion is a key factor in controlling air pollution concentration. A clear and positive feedback process between the daytime inversion intensity and the air pollutants over the city was found through the analysis of influences of climatic and environmental factors. The mechanisms by which the terrain and air pollutants affect the formation of the daytime inversion are discussed. The solar radiation as the essential energy source to maintain the inversion is analyzed, as are various out-forcing factors affecting the inversion and air pollutants. At last, a physical frame of relationships of air pollution with daytime inversion and the local and out-forcing factors over Lanzhou is built.
机译：通过分析甘肃省兰州市市区和农村地区的污染物浓度，研究了白天反演强度与大气边界层（ABL）中污染物浓度之间的关系。风速和风向，潜在温度，特定湿度曲线，ABL中的污染物浓度，表面温度以及地面上的整体辐射。结果表明，白天反演是控制空气污染浓度的关键因素。通过分析气候和环境因素的影响，发现白天反演强度与城市空气污染物之间存在清晰而积极的反馈过程。讨论了地形和空气污染物影响白天反演形成的机制。分析了太阳辐射作为维持反演的必要能源，以及影响反演和空气污染物的各种外推因素。最后，建立了空气污染与白天倒数，兰州局部和外推因子关系的物理框架。

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  • 来源
    《Advances in Atmospheric Sciences》 |2011年第4期|p.879-886|共8页
  • 作者

    Qiang Zhang 张 强; Hongyu Li 李宏宇;

  • 作者单位

    Gansu Key Laboratory of Arid Climatic Change and Reducing Disaster, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Institute of Arid Meteorology, Chinese Meteorological Administration, Lanzhou, 730020, China;

    Gansu Key Laboratory of Arid Climatic Change and Reducing Disaster, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Institute of Arid Meteorology, Chinese Meteorological Administration, Lanzhou, 730020, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    relationship; Lanzhou City; inversion; pollutant; out-forcing factors;

    机译：关系兰州市反转污染物外推因子;

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