摘要
本文通过分析常规气象观测资料、宁波机场AWOS自动观测资料、新一代多普勒天气雷达资料和NCEP GFS高分辨率分析资料等,对2017年7月12日发生在宁波栎社国际机场附近的一次微下击暴流过程进行诊断分析,研究所得主要结论如下:(1)微下击暴流发生时大气环流背景较稳定,海风锋是引起强雷雨及伴随的微下击暴流的主要天气系统。(2)AWOS自动观测资料显示风、温、压等气象要素的变化均呈现出明显的下击暴流特征。(3)微下击暴流发生时,在雷暴四周约15 km位置出现阵风锋。多普勒雷达速度RHI图像上低层出现辐散;随着反射率因子强核高度从高空的快速下降,地面将出现微下击暴流。
A microburst occurred near Ningbo Airport on July 12, 2017 is diagnostic analyzed by using the conventional meteorological data, Ningbo Airport AWOS automatic observation data, a new generation of Doppler weather radar data and NCEP GFS high resolution data. The main results are as follows:(1) Microburst occurs when the atmospheric circulation is stable, and the sea wind front is the main weather system that causes the microburst.(2) AWOS automatic observation data show that the changes of wind, temperature, pressure and other meteorological elements show obvious characteristics of lower strike storm flow.(3) A gust front appears at about 15 kilometers around the thunderstorm when a microburst occurs. The low layer divergence of the Doppler radar velocity RHI image appears in the low layer. With the rapid descent of the high altitude of the reflectivity factor from the high altitude, the ground will appear microburst.
作者
吴福浪
Wu Fulang(Ningbo air traffic management station of CAAC, Ningbo 315000 Zhejiang China)
出处
《中国民航飞行学院学报》
2019年第2期30-33,共4页
Journal of Civil Aviation Flight University of China
