承德市2006—2015年雾的分布特征及典型环流背景分析

Analysis of the Distribution Characteristics and Typical Circulation Background of Heavy Fog in Chengde City from 2006 to 2015

文章通过统计承德市9个气象站2006—2015年地面常规气象观测资料,分析承德市雾的时空分布特征,结果表明:承德市雾空间分布南多北少,滦平出现最多,时间分布特点多出现在夏、秋季节;利用NCEP/NCAR再分析资料和个例诊断分析方法,将承德市出现的区域雾(单雾日3站及以上)分为平流雾、辐射雾及锋面雾3种类型,并分析其典型环流背景,为以后承德市大雾预报工作提供重要参考。

By statistics of ground conventional meteorological data of nine weather stations in Chengde City from 2006 to 2015, analyzing spatial and temporal distribution of Chengde fog, the results showed that： spatial distribution of heavy fog in Chengde City is more in south and less in north, the most in Luanping. Time distribution features is more fog in summer and autumn. By using NCEP / NCAR reanalysis data and method of case diagnostic analysis, the regional fog （3 or more stations in a single foggy day） can be divided into three patterns： advection fog, radiation fog and frontal fog, and the typical circulation background were analyzed. It will provide an important reference for future forecasting service of the heavy fog in Chengde Ctiy.