城市大气污染特征及其与气象因子的关系--以济南、青岛市为例

Urban air pollution feature and its relationship with meteorologic factors——a case study of Jinan and Qingdao

根据2001年1月1日至2009年12月31日济南、青岛的空气污染指数(API)日报资料,运用统计分析的方法,对2市的API月、季变化特征与年际变化趋势等进行了分析,并进一步探讨了API与各气象因子的相关关系。研究结果表明:(1)青岛空气质量总体上优于济南;(2)济南、青岛具有明显而相似的API月、季变化特征,具体表现为7、8月API最低,1、3、12月API相对最高,API季节变化特征说明2市冬季空气质量最差,其次是春季和秋季,夏季空气质量最好;(3)总体来说,济南、青岛API年均值呈下降趋势,即空气质量在逐渐改善;(4)不同季节影响空气质量的气象因子并不相同,其中起主要作用气象因子为气温、风速和相对湿度。

Based on air pollution index（API） of Jinan,Qingdao during the period of 2001-01-01 to 2009-12-31,the monthly,seasonally variation characteristics and annual variation tendency of API in Jinan and Qingdao was analyzed by the statistical analysis method.Furthermore,the possible meteorologic factors that affacting API were also analyzed.Statistic results showed that the air quality in Qingdao was better than Jinan,the mounthly and seasonal variation of API in Jinan and Qingdao are obvious and similar,and the air qualities were best in summer and worst in winter.In general,the API in the two cities was decreasing during 2001-2009,that means the air quality was improving.Results also showed that the effect of meteorologic factors on air quality was different in different season.The main meteorologic factors that affectting air quality were temperature,wind speed and relative humidity.