2006年春季石家庄市沙尘天气与PM_(10)污染

Study on Dust Weather and PM10 Pollution of Shijiazhuang in 2006 Spring

文章应用气象资料和环境监测逐时资料,对2006年春季石家庄市出现的沙尘天气过程中PM10浓度变化,及其与污染源、天气形势、风、周边环境等的关系进行分析。结果表明,沙尘天气的首要污染物均是PM10,PM10的变化曲线呈正态分布,春季中度及以上污染日均出现在污染日当日或次日。造成石家庄沙尘天气污染源分本地型、外来型以及两者共同影响型三种。本地型沙尘污染强度取决于风速大小及强风持续时间,PM10浓度变化与风速呈正相关。而外来型污染多发生在地面弱气压场,PM10浓度变化与风速呈反相关。文章总结出沙尘天气污染预警的几个必要条件,可供实际的空气质量预警参考。

Based on the hourly meteorological and environmental observational data in 2006 during the spring season,the correlations between pollution source,synoptic pattern,wind and pollution concentration are in shijiazhuang area during dust weather periods are analyzed.The results show：（1） the principal pollutants is PM10,and it＇s curve changed according normal school.（2） the middle and more serious pollutions happened in dust weather or next day.（3） pollution source which caused dust weather conclude three types： the outside,the local,and the composed sources.（4） some necessary conditions for warning.Is concluded too,which could provided reference for real-time air quality forecast.