大气污染物分布与气象因素间的关系研究

Relationship Between Air Pollutants Distribution and Meteorological Factors

为描述大气污染真实状态,应深入研究大气污染物分布与气象因素间的耦合关系。首先计算污染区域内空间位置及相对污染物浓度的变化趋势,利用样本均值推算变异系数并完成数据拟合,了解污染物浓度空间分布特性。然后将距离最近的气象站连线组成角度大小不等区域,计算各区域中的气象因素平均值。最后对大气污染物聚类,获得空气质量预报模型,再引入灰色关联分析法,计算得出大气污染物分布与气象因素间的因果关系。仿真结果表明该方法可有效描述气象因素对大气污染物分布的影响。

In order to describe the status quo of air pollution,the coupling relationship between air pollutants distribution and meteorological factors are studied.Firstly,the spatial location and the variation trend of the relative pollutant concentration in the polluted area were calculated,and the coefficient of variation was calculated by using the sample mean value and the data fitting was completed to understand the spatial distribution characteristics of pollutant concentration.The study connected the nearest weather station to form a region with different angles,and calculated the average value of meteorological factors in each region.Finally,the air quality forecast model is obtained by clustering the air pollutants,and the causality relationship between the distribution of air pollutants and meteorological factors is calculated by introducing the grey correlation analysis method.The simulation results show that this method can effectively describe the influence of meteorological factors on the distribution of atmospheric pollutants.