广州空气污染指数特征及其与地面气压型的关系  

THE CHARACTERISTICS OF AIR POLLUTION INDICES IN GUANGZHOU AND THE RELATIONSHIPS BETWEEN INDEICES AND SURFACE PRESSURE PATTERNS

作　　者：周亚军 熊亚丽 肖伟军 温晶[2] 

机构地区：[1]广州市气象台,广东广州510080 [2]广东省气象台,广东广州510080

出　　处：《热带气象学报》2005年第1期93-99,共7页Journal of Tropical Meteorology

基　　金：广东省气象台"空气质量预报的天气学方法研究"课题资助

摘　　要：分析广州2003年1～6月的SO2、NO2和PM10指数,发现(1)SO2、NO2和PM10具有非常好的同步变化关系,且以NO2和PM10的相关最大.(2)从月平均值来看,PM10是整个时段的主要污染物,SO2次之,NO2最小(1月除外);PM10和NO2呈现出逐月减小趋势,SO2变化平稳.主要讨论PM10指数的变化.(3)从月方差值来看,SO2、NO2和PM10的最大值均在1月,次大值在2月.(4)给出了几种地面气压型,结论显示主要清洁时段出现在锋区强风型,主要污染时段出现在脊内回流型.在脊内回流型下,若由前期的静风转吹东(从东到南)风时,指数会增大.By analyzing the SO2,NO2 and PM10 indices in Guangzhou from January to June 2003, we have the following findings.(1) The variations of SO2, NO2 and PM10 have very good synchronal relations with one another. Among them, NO2 and PM10 show the highest correlation. (2) From the monthly-averaged index values,the PM10 seems to be the main polluting substance for the whole period, followed in sequence by SO2 and NO2(except in January). PM10 and NO2 tend to decrease sequentially with month. Yet SO2 remains at a stable level; The variations of PM10 are analyzed in detail. (3) For the monthly variances, the maximum variances of SO2, NO2 and PM10 appear in January. The second maxima occur in February. (4) Some surface pressure patterns relevant to air pollution are presented. Stronger wind in the cold front resulted in lower pollution. The in-ridge refluence may be considered as main mechanism resulting in high air pollution. When it turned from calm weather into southeasterly (to be more accurate, from easterly to southerly) , the pollution indices might increase.

关 键 词：SO2、NO2和PM10指数 地面气压型 脊内回流 

分 类 号：X16[环境科学与工程—环境科学]