Analysis of Radar Echoes of a Strong Convection Process Accompanied by a Gust Front
Using conventional weather data,Doppler weather radar data,sounding and automatic station data,this paper analyzes a strong convective weather process accompanied by a gust front near Guanghan Airport on July 17,2023.The results show that when the gust front passes through,the temperature drops,the wind direction suddenly changes,and the wind speed increases sharply;the K index,Shackleberry index,T850-T500 and T7000-T500 have certain indicative significance for predicting thunderstorms and strong winds;when the strong echo area in a thunderstorm rapidly decreases in height,a strong downdraft is formed,generating gust fronts;due to the low height of the gust front,the arc-shaped weak echo zone can be detected first on the reflectivity factor map at low elevations on radar;the generation of new thunderstorms is easily triggered during the movement of gust fronts.
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万方数据
