海西城市群灰霾天气特征及其影响因子分析  

Features of Haze Weather and Impact Factors Analysis over Urban Agglomeration in Western Region of Taiwan Strait

作　　者：隋平[1] 冯宏芳 王宏[1] 郑秋萍[1] 陈晓秋 林文[1] 

机构地区：[1]福建省气象科学研究所,福建福州350001 [2]漳州市气象局,福建漳州363000 [3]福建省环境监测中心站,福建福州350003

出　　处：《环境科学与技术》2013年第7期53-57,共5页Environmental Science & Technology

基　　金：国家环保部环保公益性行业科研专项(201009004);福建省自然科学基金项目(2010J01243);福建省气象局青年科技专项(2010Q13)

摘　　要：利用2005-2010年海西21个城市常规气象观测资料和大气污染物浓度资料,分析了灰霾的时空分布规律和主要影响因子。结果表明:各城市间灰霾发生总天数存在明显差异,两个高发区在以福州、漳州为代表的闽中、闽南地区,少发区位于闽东北。1-4月是灰霾的高发期,10-12月是次高发期;春季霾日最多,其次是冬季,夏季和秋季较少。灰霾的产生不仅与天气条件有关,还与城市地形、大气复合污染有关。受低涡锋面、台风等降水系统影响,不会出现灰霾,非降水天气系统下均有可能出现,其中在锋前暖区和地面倒槽影响下灰霾出现率最高。秋冬季灰霾的出现与冷空气的强弱有关;春季与西南暖湿气流的强弱有关,夏季与副热带高压的进退有关。Spatial and temporal distributions,as well as impact factors of haze in 21 cities in western region of Taiwan Strait were analyzed based on data of surface meteorological observations and atmospheric pollutants concentration during 2005 to 2010.Results indicated that haze days were different in 21 cities,most occurred in Fuzhou,central Fujian and Zhangzhou,south Fujian,while least in northeast Fujian.Haze occurred most frequently from January to April,and then from October to December.Haze days were most in spring,and then in winter,fewest in summer and autumn.Haze occurred not only because of weather condition,but also urban terrain and atmospheric complex pollution.There were no haze weather in rainfall systems,like low vortex front and typhoon.Haze could occur in all non-rainfall systems,most frequently in prefrontal warm sector and surface inverse trough.Occurrence of haze in autumn and winter was related to the strength of cold air,and in spring was related to the strength of southwest warm and wet flow,and in summer was related to the advance or retreat of subtropical anticyclone.

关 键 词：海西城市群 灰霾 时空分布 影响因子 

分 类 号：X831[环境科学与工程—环境工程]