贵阳机场一次辐射雾天气过程分析

Analysis of a Radiation Fog Weather Process at Guiyang Airport

摘要: 利用贵阳机场常规地面观测资料和高空资料、贵阳站探空资料、自动观测站数据，对2022年3月7日贵阳机场一次辐射雾天气过程的大尺度环流背景、物理量条件以及地面气象要素的变化特征进行分析。结果表明，在大雾过程期间，高空以脊前或高压前部西北到偏西气流为主，地面为高压控制；近地面处于微风状态、夜间辐射冷却降温、低层充足的水汽及逆温层的建立利于辐射雾的生成。

Abstract: Using Guiyang Airport ground observation data and high-altitude data, sounding data from Guiyang station, and data from automatic observatories, this paper analyzes the large-scale circulation background, the physical quantity conditions and the change characteristics of the surface meteor-ological elements of a radiation fog weather process on March 7, 2022 at Guiyang Airport. The re-sults show that during the foggy process, the upper air is dominated by the northwest to west air-flow in front of the ridge or the front of the high pressure and the ground is controlled by the high pressure; the near-surface is in a breezy condition, radiative cooling at night, sufficient water vapor in the low layers and the establishment of an inversion layer are conducive to the generation of the radiation fog.