Analysis of Heavy Rain and Risk Assessment in the Main Flood Season of the Yangtze River Basin in 2020
Zijie Jiang, Xiaoya Wang, Weiguo Jiang, Dabin Ji
Available Online 12 April 2021.
- https://doi.org/10.2991/aebmr.k.210409.007How to use a DOI?
- Floods in the Yangtze River Basin, rainstorm disasters, risk analysis, dynamic assessment, Poyang Lake Basin
- Affected by heavy rainfall, the Yangtze River’s 2020 floods No. 1 and No. 2 formed in the upper reaches of the Yangtze River on July 2 and 17, respectively. In order to explore the specific change process and impact of this heavy rainfall, this paper uses high-resolution precipitation fusion data, which is based on Himawari-8 stationary meteorological satellite data and GPM-IMERG data generation. And using the data from the ground weather station of the China Meteorological Administration, the analysis of rainfall conditions and the risk assessment of rainstorm disasters in the Yangtze Basin were carried out. The assessment period is the main flood season in 2020, from June 1 to July 19.The main contents and conclusions include: (1) The rainstorm in the Yangtze River Basin mainly affected the middle and lower reaches of the Yangtze River, with northeast Hunan, southern Hubei, Jiangxi and southern Anhui seriously affected; the prefecture level cities mainly affected were Yiyang and Yueyang in Hunan, Jingzhou, Wuhan and Ezhou in Hubei, Shangrao, Jiujiang, Nanchang in Jiangxi, Anqing and Xuancheng in Anhui; the main affected basins were Poyang Lake,Taihu Lake and Dongting Lake. Among them, Poyang Lake Basin is the most seriously affected. (2) Heavy rainfall mainly occurred in late June and early July, and the accumulated rainfall exceeded 1000mm every 10 days. (3) Compared with the rainfall of the Yangtze River Basin in 1998, it is found that the distribution range of heavy rainfall in 2020 is less than that in the same period of 1998, but the rainfall is significantly higher than that in the same period of 1998, and the seriously affected Poyang Lake Basin exceeds the historical value of the same period. (4) Most areas in the lower reaches of the Yangtze River Basin are high risk areas. Dongting Lake Basin, Poyang Lake Basin and Taihu Lake Basin are high risk areas.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Zijie Jiang AU - Xiaoya Wang AU - Weiguo Jiang AU - Dabin Ji PY - 2021 DA - 2021/04/12 TI - Analysis of Heavy Rain and Risk Assessment in the Main Flood Season of the Yangtze River Basin in 2020 BT - Proceedings of the 9th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2020) PB - Atlantis Press SP - 47 EP - 53 SN - 2352-5428 UR - https://doi.org/10.2991/aebmr.k.210409.007 DO - https://doi.org/10.2991/aebmr.k.210409.007 ID - Jiang2021 ER -