Abstract：In order to study the background of rain and snow weather in winter and the characteristics of radar echo in Tonggu,the Tonggu ground data,the weather map and radar echo data were used to analyze the process of rain and snow weather in Tonggu.The results indicate that:from 1957 to 2023,the Tonggu National Basic Meteorological Station observed the frequency of snow depth≥0.1 cm was 62 times,the frequency of snow depth≥1.0 cm was 18 times.The maximum snow depth was 24 cm from 20:00 on February 22nd to 08:00 on February 23rd,2022.Tonggu snowfall weather system has a 500 hPa trough front,a 200 hPa outflow area,a shear line at 700 hPa or 850 hPa,a southwest jet and easterly airflow at 850 hPa;the typical feature of rain and snow radar puzzle in Tonggu is that the echo intensity is up to 35 dBZ,generally around 25 dBZ;the echo structure is uniform,and it is banded in the direction of northeast and southwest.The echo peak height of snowfall in Tonggu is below 3 km-5 km,and the echo intensity is 15-30 dBZ.These research results provide an analytical basis for the prediction and warning of rain and snow weather in Tonggu.
李正陈, 廖满庭, 张王鹏, 刘娟, 陈凫. 2013-2023年铜鼓雨雪天气回波特征分析[J]. 气象水文海洋仪器, 2024, 41(2): 21-23.
Li Zhengchen, Liao Manting, Zhang Wangpeng, Liu Juan, Chen Fu. Analysis of echo characteristics of rain and snow weather in Tonggu from 2013 to 2023. Meteorological Hydrological and Marine Instrument, 2024, 41(2): 21-23.
2024, Vol. 41 
