贵阳机场锋面雾气候特征分析

The Analysis of Climate Characteristics of Frontal Fog at Guiyang Airport

摘要: 利用2010~2021年的气象资料，统计分析贵阳机场锋面雾的气候特征以及天气形势特点，结论如下：1) 锋面雾年平均3.6日，2月发生日数最多。2) 4~9时是最易生成，7~12时最易消散，持续时间以1~4小时居多。3) 96%的个例有逆温层，逆温顶平均高度为773 hPa，温度6.95℃，厚度为43 hPa。4) 具有低温特点，并伴有锋面降水。5) 主要影响系统为500 hPa、700 hPa西南气流，850 hPa切变线和地面静止锋。

Abstract: Using the meteorological data from 2010 to 2021, the climatic characteristics and weather situation characteristics of frontal fog at Guiyang Airport were statistically analyzed. The conclusions are as follows: 1) The annual average of frontal fog is 3.6 days, and the number of days in February is the largest. 2) 4~9 o’clock is the easiest to generate time, 7~12 o’clock is the easiest to dissipate time, and 1~4 hours is mostly duration. 3) 96% of the cases have an inversion layer, the average height of the inversion top is 773 hPa, the temperature is 6.95˚C, and the thickness is 43 hPa. 4) It has the characteristics of low temperature and is accompanied by frontal precipitation. 5) The main influencing systems are the southwest airflow at 500 hPa and 700 hPa, the shear line is at 850 hPa and quasi-stationary front is on the ground.