江西饶河流域大暴雨短时强降水特征分析
Analysis on the Characteristics of Short-term Heavy Rainfall in Raohe River Basin,Jiangxi Province
曹佳琪 1马中元 2张晓芳 1邱雯婷1
作者信息
- 1. 婺源县气象局,333200,江西,婺源
- 2. 江西省气象科学研究所,330046,南昌
- 折叠
摘要
为了做好江西饶河流域大暴雨的短临预报,使用 2013-2022 年江西饶河流域(南支乐安河)大暴雨资料以及天气图、雷达回波等资料,采用统计学、天气学、雷达气象学等原理及方法,对饶河流域大暴雨天气进行研究,主要结论:1)饶河流域大暴雨次数逐年增长,短时强降水与大暴雨呈正态分布,出现在 6 月.2)短时强降水多由带状回波造成,表现为絮状回波短带、絮状回波带、回波带、回波短带.3)低槽、切变、急流、副热带高压等天气系统是饶河流域大暴雨的主要天气系统.4)絮状回波团(带)结构较为松散,回波短带结构密实,当回波系统合并时,回波加强发展,可能出现强降水极值.这些研究结果均为江西饶河流域大暴雨天气的预报预警提供参考依据.
Abstract
In order to do a good job in the short-term and imminent forecast of heavy rainstorm in Raohe River Basin,Jiangxi province,the data of heavy rainstorm in Raohe River Basin(Le'an River in the south branch)from 2013 to 2022,weather maps,radar echoes and other data were used to study the heavy rainstorm weather in Raohe River Basin by using the principles and methods of statistics,synoptic science,radar meteorology and so on.The main conclusions are as follows:1)The number of heavy rainstorm in Raohe River Basin increases year by year,and the short-term heavy rain and heavy rainstorm are normally distributed in June.2)Short-term heavy rainfall is mostly caused by band echoes,manifested as flocculent echo short bands,flocculent echo bands,echo bands,and echo short bands.3)Low trough,shear,jet stream,subtropical high and other weather systems are the main weather systems of heavy rainstorm in Raohe River Basin.4)The floc-culent echo cluster(band)structure is relatively loose,and the echo short band structure is dense.When the echo system merges,the echo strengthens and develops,which may lead to extreme pre-cipitation.These results provide a reference for the forecast and early warning of heavy rainstorm in Raohe River Basin,Jiangxi province.
关键词
饶河流域/大暴雨/短时强降水/天气形势/雷达回波Key words
Raohe River Basin/heavy rain/short-term heavy rainfall/weather situation/radar echo引用本文复制引用
基金项目
中国科学院战略性先导科技专项(A类)(XDA19040202)
国家自然科学基金(41975001)
国家自然科学基金(41675029)
江西省气象科技面上项目(JX2021M12)
出版年
2024
国家科技期刊平台
NSTL
万方数据