摘要
利用NCEP日平均再分析资料、广西降雨量资料,对2022年广西“龙舟水”期间持续强降雨的雨情、夏季风活动特征及其对持续性强降雨的影响进行分析。结果表明,2022年南海夏季风爆发偏早,在“龙舟水”期间强度偏强,倾向于向东传播,使广西强降雨区出现在桂东北地区。2022年“龙舟水”期间,西太平洋副热带高压西脊点位置偏东,西段脊线位置偏南,使水汽输送偏南偏多。另外,东亚大槽偏深,冷空气活动频繁等诸多因素使得夏季风前沿在华南地区长时间停滞,造成了广西的持续性强降雨。
Based on the NCEP reanalysis data and the precipitation data in Guangxi,the rainfall characteristics,the characteristics of summer monsoon activities and their effects on the continuous rainstorm in Guangxi during the dragon-boat rainy period in 2022 are analyzed.The results show that The breaking out of the South China Sea summer monsoon is abnormally earlier in 2022,with a stronger intensity and propagating eastward during the dragon-boat rainy period,resulting in the heavy rain event occurring in the northeast of Guangxi.The location of the western ridge point of the Western Pacific subtropical high pressure is eastward and the location of the western ridge is southward,causing the vapor transport southward.Besides,many factors such as the deeper East Asia trough and frequent cold air activities have caused the Southwest monsoon maintaining in South China for a long time,resulting in continual torrential rain there.
作者
廖胜石
陆甲
罗小莉
Liao Shengshi;Lu Jia;Luo Xiaoli(Guangxi Climate Center,Nanning 530022,China)
出处
《气象研究与应用》
2023年第1期14-19,共6页
Journal of Meteorological Research and Application
基金
广西气象科研计划项目(桂气科2022Z03)。
