冬季桃仙机场持续大雾天气成因分析与应急服务.pdfVIP

July 2014 中 国 民 航 飞 行 学 院 学 报 Vol.25 No.4 Journal of Civil Aviation Flight University of China 37 冬季桃仙机场持续大雾天气成因分析与应急服务 1 2 梁 甍 梁 木 （1 民航东北空管局 辽宁沈阳 110043 2 沈阳桃仙机场三期建设指挥部 辽宁沈阳 110043 ） 摘 要：利用常规观测资料，对2011 年 11 月26-28 日沈阳桃仙机场出现持续大雾天气 进行客观分析与应急服务总结。结果表明：此次大雾的天气过程具有混合型的特点，雾的性质随 着时空变化而转变，由锋面雾、辐射雾和平流雾交替转换。其中，冬季桃仙机场“ 口袋型”地势与 地面风配合有利于大雾的形成与维持；850-700 hPa 之间弱的正散度区，促进了上升运动区与下沉 运动区的界面中的逆温层的维持；后续925 hPa 低空湍流的发展对大雾消散起到了关键作用。 关 键 词：持续大雾 逆温层 低空湍流 应急服务 Cause analysis and emergency services winter Tao Xian Airport sustained heavy fog weather 1 2 Liang Meng Liang Mu (1 Northeast Air Traffic Management Bureau of CAAC, Shenyang, 110043, Liaoning, China 2 the Third Phase Construction Headquarters of Taoxian Airport, Shenyang, 110043, Liaoning, China) Abstract ：Based on the conventional observation data, an objective analysis is made for causes of the continuous heavy fog occurred on November 26 to 28, 2011, at Taoxian airport. Results show that the heavy fog weather has the characteristics of mixed nature, with alternate occurrence of frontal fog, radiation fog and convection fog. Among all the causes, the ‘pocket ’-shape terrain of the airport with surface wind in winter is conductive to the formation and maintenance of the fog. And weak positive divergence zone between 850 to 700hpa promotes the maintenance of inversion layer between upward motion and downward motion. The subsequent 925hpa low turbulence plays a key role on the fog dissipation. Key words ：Continuous heavy fog Inversion layer Low level turbulence Emergency service 1 引言 缓机场客流压力等有重要意义。