LIANG Shuang,XIAO Tiangui,LUO Yali.Relationship between Extreme Precipitation Events and Atmospheric Riversin the Early Flood Season in South China under the Background of Jet Stream[J].Journal of Chengdu University of Information Technology,2020,35(06):646-652.[doi:10.16836/j.cnki.jcuit.2020.06.011]
急流背景下华南前汛期极端降水与大气河的关系
- Title:
- Relationship between Extreme Precipitation Events and Atmospheric Rivers in the Early Flood Season in South China under the Background of Jet Stream
- Keywords:
- climate change; extreme precipitation; atmospheric river; pre-flood season in South China; high and low jet
- 分类号:
- P442.3
- 文献标志码:
- A
- 摘要:
- 为更好地分析近年来极端降水事件与大气河的关系,利用1998-2015年ECMWF的再分析格点资料和区域自动站日降水资料研究华南前汛期极端降水事件中,不同类型急流对应大气河的变化,结果表明:对华南前汛期降水产生影响的湿冷空气大多由西南方向进入华南地区,逐步对降水的发生和维持提供动力作用; 根据影响极端降水事件的急流类型,分为3大类、4小类,并对不同类型对应存在的大气河进行分析; 对应为孟加拉湾-南海大气河、孟加拉湾-云贵高原大气河以及中南半岛-南海大气河作用在极端降水事件上。
- Abstract:
- In order to better analyze the relationship between extreme precipitation events and atmospheric rivers in recent years, the reanalysis grid data from 1998 to 2015 of ECMWF and the daily precipitation data of regional automatic stations were used to study the extreme precipitation events in the pre-flood season in South China, where different types of jets correspond to the atmospheric rivers. The results of the changes in the river show that most of the humid and cold air that affects the precipitation in the first flood season of South China are from the southwest direction and enters the South China, and gradually provides a driving force for the occurrence and maintenance of precipitation; according to the type of rapids affecting extreme precipitation events, it is divided into 3 large categories, 4 subcategories, and the atmospheric rivers corresponding to different types are analyzed.; corresponding to the Bay of Bengal-South China Sea atmospheric river, Bay of Bengal-Yungui Plateau atmospheric river, and Indochina-South China Sea atmospheric river acting on extreme precipitation events.
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备注/Memo
收稿日期:2020-02-21 基金项目:国家科技支撑计划资助项目(2015BAC03B05)