| 摘要: |
| 【目的】为开展铜仁主城区短时强降水特征分析。【方法】通过2021—2022年铜仁主城区逐小时降水资料、雷达资料对短时强降水过程进行统计分析。【结果】铜仁市主城区短时强降水过程多发生在午后至夜晚，主要集中在14时—次日05时之间；6—8月是铜仁主城区短时强降水集中时段；在雷达回波特征中，回波强中心伸展高度较低，一般位于2～5 km左右；当强回波中心值达45 dBZ以上，维持7～8个体扫以上时，需考虑铜仁主城区极端小时降水的发生；一般从江口县移来的回波对铜仁主城区短时强降水的发生占主导地位；高VIL值（＞5 kg·m⁻²）时，需考虑其对短时强降水的重要影响；通常短时强降水发生时铜仁地区水汽输送可达30 g·s⁻¹·hPa⁻¹·cm⁻¹以上。【结论】研究成果为今后铜仁主城区短时强降水临近预报和预警提供实际应用价值。 |
| 关键词: 铜仁；短时强降水；雷达回波 |
| DOI： |
| 投稿时间：2024-08-21修订日期：2025-01-03 |
| 基金项目:铜仁市暴雨预报研究团队；贵州省气象局省市联合基金项目(黔气科合 SS(2023)31号) |
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| Statistical Analysis of Short-time Severe Precipitation Features in the Main Urban Area of Tongren City |
| longyadi,Gulinare Abdurezak,Zhang Dandan,Long Hechun,Li Boying,Yang Qun |
| (Bijiang Meteorological Station of Guizhou Province;Aktao Meteorological Station of Xinjiang Uyghur Autonomous Region;Yuping Dong Autonomous County Meteorological Station of Guizhou Province;Tongren Meteorological Office of Guizhou Province) |
| Abstract: |
| To analyze the characteristics of short-time severe precipitation in the main urban area of Tongren City, Guizhou Province, this article conducts a statistical analysis of short-time severe precipitation processes using hourly precipitation data and radar data collected in the main urban area of Tongren City from 2021 to 2022. The results show that short-time severe precipitation processes in the main urban area of Tongren City mostly occur from afternoon into night, mainly concentrated between 14:00 and 05:00 the next day. June to August is the major period of short-time severe precipitation in the main urban area of Tongren. In radar echo characteristics, the echo strength core extension height is relatively low, generally located around 2 to 5 km. When the strong echo core value reaches above 45 dBZ and maintains for more than 7 to 8 volume scans, the occurrence of extreme hourly precipitation in the main urban area of Tongren City needs to be considered. Echoes migrating from Jiangkou County play a dominant role in the occurrence of short-time severe precipitation in the main urban area of Tongren City. High VIL values (＞5 kg·m⁻²) need to be considered for their significant impact on short-time severe precipitation. Typically, water vapor transport in Tongren during short-time severe precipitation can reach above 30 g·s⁻¹·hPa⁻¹·cm⁻¹. The research results have practical application value for nowcasting and early warning of short-time severe precipitation in the main urban area of Tongren City in the future. |
| Key words: Tongren City; short-time severe precipitation; radar echo |
