南宁机场一次暴雨天气过程分析

An analysis of a rainstorm process in Nanning Airport

利用MICAPS常规气象资料以及卫星和机场雷达资料，分析了2015年8月14日午后至傍晚南宁机场暴雨天气过程。分析表明：此次强对流天气是在减弱东退的西太平洋副热带高压不稳定环流场下，由高空槽东移过境和低层暖式切变配合加强的暖湿水汽输送的相互作用，触发中尺度对流系统（MCS），并在其外流边界和暖湿人流作用下存在的较强辐合抬升机制使得机场区域对流发展强烈，导致南宁机场强对流和强降水天气的发生。本文在此次MCS天气过程中，分析其在卫星云图和雷达资料的表现特征，同时总结分析了此次暴雨过程中广西空管分局气象台预报室的保障服务情况，为以后南宁机场的强对流天气预报和飞行气象保障提供参考。

Using MICAPS conventional meteorological data and radar data from satellites and the airport, the rainstorm weather process in Nanning airport from afternoon to evening in August 14, 2015 was ana- lyzed. This strong convective weather was based on a weakening and eastward West Pacific subtropical high which was an unstable circulation field, the mesoscale convective system （MCS） was triggered by an interaction between the upper trough east transit and low-level warm shear which strengthened the warm water vapor transport. The strong convective uplift mechanism under the action of its outflow boundary and warm humid inflow made the development of convection in the airport area stronger, leading to the occurrence of the severe convection and heavy rainfall in Nanning airport. In the MCS weather process, we studied satellite images and radar data characteristics and summarized the service of Weather station forecast room of Guangxi Air Traffic Branch Bureau in the rainstorm process, providing a reference for strong convective weather forecast and Nanning airport flight security.