郑州市霾天气的气候特征分析  

Analysis of Climatic Characteristics of Haze in Zhengzhou

作　　者：代佩玲[1] 刘和平[2] 朱玉周[1] 侯春梅[1] 郭学锋[1] 

机构地区：[1]河南省气象科技服务中心,郑州450003 [2]河南省气候中心,郑州450003

出　　处：《气象与环境科学》2009年第B09期16-18,共3页Meteorological and Environmental Sciences

摘　　要：利用1961-2007年地面观测资料,分析了郑州市霾天气时空分布及相应气象要素特征。结果表明:郑州市霾日数月、季变化表现为1月最多,8月最少;10月至翌年3月霾日数占全年的75%。年霾日数呈阶梯式上升趋势,60年代年平均霾日数6.6个,与本世纪初年平均霾日数的81.1个相差75个。霾天气发生时,多为正变压、负变温;相对湿度在20%-59%之间;风速<3 m.s-1,风向在NE-ESE-S范围内概率较大。Based on the observational data of Zhengzhou from 1961 to 2007, the spatial and temporal distribution and the correlated meteorological factor characteristics of haze in Zhengzhou were analyzed. The results indicated that the most haze days in Zhengzhou are in January and the fewest days in August; the haze days from October to next March account for more than 75% of annual total haze days. In general, the number of annual haze days represents the obvious increasing trend. The average number of haze days in the 1960s increased from 6.6 days to 81.1 days in the beginning of this century, 75 days difference between the two. The weather conditions of haze are always the increase of pressure and the reduction in temperature; the relative humidity is from 20% to 59% ; the wind speed is less than 3 m· s^-1 , and the direction of wind is almost at NE-ESE-S.

关 键 词：霾 气候特征 气象要素 

分 类 号：P427.122[天文地球—大气科学及气象学]