Selection of top ten heavy rainstorm events over China in 2023 and process introduction

In order to raise the public's attention to rainstorm, show the leading role of the national meteorological research institute in the professional field, support the national rainstorm forecasting business service, help the high-quality development of rainstorm discipline, and fill the gap in China's annual major rainstorm event records, from 2022, with the support of the Chinese Meteorological Society, Wuhan Institute of Heavy rainstorm organized the selection of China's annual top ten heavy rainstorm events. In 2023, the weather situations and climate states over China are complex and abnormal, the extreme events such as rainstorm, flood and typhoon occur frequently. The main characteristics of the top ten heavy rainstorm events are as follows. (1) The spatial distributions are uneven. The rainstorm disasters in the coastal areas of North China, South China and Northeast China are serious, and the Haihe River and Songhua River basins suffer severe floods. (2) These rainstorm processes have large continuous precipitation and number of rainstorm days. Many national meteorological stations in Hebei, Jilin, Guangdong, Fujian broke the historical extreme value. (3) Typhoon, trough, vortex and low-level shear line are the main weather systems which lead to rainstorm events.