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首页> 外文会议>2012 Fifth International Joint Conference on Computational Sciences and Optimization >Synoptic Analysis and Numerical Simulations of an Air Pollution Episode over Ningbo City in Winter
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Synoptic Analysis and Numerical Simulations of an Air Pollution Episode over Ningbo City in Winter

机译：宁波市冬季大气污染天气的天气学分析与数值模拟。

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摘要

In order to study the influences of local pollutant source on the air quality of Ningbo city and the characteristics of meso-scale synoptic system which contribute to the formation of air pollution, an atmosphere pollution case in which air quality was higher than or equal to Level 3, which occurred during 19-27th Dec. 2006, is synoptically analyzed and simulated using the combined PSU/MM5 model with CALPUFF dispersion model with 1-km horizontal resolution, in which the local point source is considered. The results show that the main synoptic reasons for the haze episode were minimum altitude subsidence downdraught, temperature inversion layer, stable atmospheric layer, surface breeze or wind shadow under the control of high pressure or transformative high pressure ridge, and wind convergence line which is comprised of local circulations such as sea and land breeze, mountain and valley breeze, and urban heat island circulation. The simulation results indicate that the local source significantly influenced Ningbo area while moderate north-to-northeasterly winds were blowing because of the special basin landform of the area, that forecasting and warning of air pollution could focus on steering flow of 500-700hpa mean layer, and that air pollutant belt rotated clockwise against the background of weak wind.
机译：为了研究局部污染物源对宁波市空气质量的影响以及造成大气污染形成的中尺度天气系统特征，以空气质量高于或等于Level的大气污染案例为例。利用结合了PSU / MM5模型和CALPUFF色散模型（水平分辨率为1 km）对2006年12月19日至27日发生的3号进行了简要分析和模拟，其中考虑了本地点源。结果表明，引起雾霾天气的主要天气原因是最低高度下沉下沉，温度反演层，稳定的大气层，在高压或高压高压脊控制下的表面微风或风影，以及由风团组成的风汇聚线。海陆风，山谷风和城市热岛环流等局部环流。模拟结果表明，由于该地区特殊的盆地地貌，本地源对宁波地区有明显影响，而北风向北风向吹，该地区的空气污染预报和预警可以集中在平均时速500-700hpa的转向流上。 ，并且空气污染带在弱风的背景下顺时针旋转。

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