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| Analysis of a rainstorm process in Chongren in April 2021 |
| Ji Jiacheng1, Zhou Yu1, Jin Qiwei1, Li Chao2 |
1. Dongxiang District Meteorological Bureau,Fuzhou 331800;
2. Chongren County Meteorological Bureau,Chongren 344200 |
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Abstract Based on a rainstorm process in Chongren from April 24 to 25,2021,using conventional meteorological data,ground observation data,FY-2G cloud top brightness temperature data and NCEP 1°×1° reanalysis data,and combined with the diagnosis technology of physical quantities,the circulation situation,water vapor conditons,dynamic conditions,thermal conditons and mesoscale system of the rainstorm were deeply explored.The results show that the existence of large-scale circulation in two troughs and one ridge greatly promotes the formation of rainstorm.The formation of the southwest jet stream makes a large amount of water vapor continue to transfer to the rainstorm zone.The strong instability of the atmosphere and the vertical upward movement provide thermodynamic and dynamic conditions for the rainstorm process.The research results provide reference for short-term weather forecasting and early warning work.
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Received: 24 May 2023
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2024, Vol. 41 
