城市空气污染二氧化硫数值预报中的背景值选取研究

针对城市空气污染二氧化硫数值预报中的背景值对预报准确度影响较大的问题,对背景值的选取展开研究,分别采用背景点当天浓度、背景点前一天浓度、按比例扩大预报值和以背景气象条件决定背景值四种方法,对鞍山市6个点位在1-5月的监测值和预报值进行相关性分析,并给出了回归方程、相关系数和符合指数。

Numerical prediction research on background value selection of sulfur dioxide in urban air pollution

On the problem of larger issues affecting the background value for sulfur dioxide numerical prediction of in urban air pollution,the background value selection was researched.The correlation analysis between six-point value of monitoring and forecasting from January to May in Anshan city was made with four background value selection methods：the same day concentration of the background point,the day before concentration of the background point,scaled prediction value and determined by the background meteorological conditions.At the same time,the regression equation,correlation coefficient and exponential fitness was presented.