首都机场平流雾特征分析与预报  

Statistical Characteristics and Contrast Analysis of an Advection Fog in Capital Airport

作　　者：黄继雄[1,2] 窦利军[2] 阿利曼[2] 

机构地区：[1]北京大学物理学院大气科学系,北京100871 [2]民航华北空管局气象中心,北京100621

出　　处：《气象科技》2011年第1期50-55,共6页Meteorological Science and Technology

摘　　要：对2007年2月21日造成首都机场大面积进出港航班延误及取消的平流大雾过程进行了天气形势、物理量场的特征分析,并与2000年1月16日一次典型的平流雾过程进行对比分析,进而对首都机场2000—2007年所有平流雾过程进行统计、对比分析,力图找出平流雾天气的特征。最终总结提出了首都机场平流雾预报的着眼点:在符合大雾产生的弱天气形势下,管区东南部存在大片雾区时,如果通县及首都机场均在凌晨出现暖平流导致的地面异常增温或温度长时间维持不变,加之本场风向转为偏东风或东南风,就应考虑平流雾产生。An analysis is made of an advection fog process that induced serious delay and cancellation of flights in the Capital Airport on 21 February 2007 in the aspects of synoptic situation and physical parameter fields,in compared with the typical advection fog process on 16 January 2000.The statistical analysis and comparison are performed on all the advection fog processes occurred in the Capital Airport from 2000 to 2007,to find out the characteristics of the advection fog weather.Some forecasting hints of advection fogs over the Capital Airport are summarized and presented： under the weak weather situation,if there exists a large fog area in the southeast and ground temperature increases abnormally or keeps warm for a long time resulted from warm advection before dawn in both Tongxian and Capital Airport,the wind direction at Capital Airport turning to east or southeast as well,the advection fog can be forecasted.

关 键 词：平流雾 预报着眼点 东南风 暖平流 

分 类 号：P426.4[天文地球—大气科学及气象学]