Abstract
AbstractTropical cyclones (TCs) influence extreme rainfall events. However, changes in TCs caused by their poleward migration and subsequent impacts on extreme rainfall are yet to be adequately explored. In this study, the long‐term trends of TCs and typological characteristics of TC‐induced rainfall were analysed. Daily rainfall data were obtained from 759 Chinese stations and TC data were obtained in the Northwest Pacific (NWP) regions from 1961 to 2017. From May to October of each year, the TC‐induced rainfall was separated from the total rainfall data and spatiotemporal distribution patterns of TC‐induced rainfall were identified. The amount and frequency of TC‐induced rainfall decrease from the coastal inland. The TCs migrate northward, leading to a decrease (increase) in their activities south (north) of 20°N, respectively. In the South China Sea, TC activity is decreasing. The number of TC landfall events is decreasing (increasing) in the Pearl River basin (Southeast River basin). Furthermore, nonstationary increasing trends in the Pearl River and Southeast basins account for 41.7 and 62.9%, respectively, whereas the decreasing trends account for 30.6 and 14.3%, respectively. The Southeast River basin may face more TC‐induced extreme rainfall in the future. The results can provide information for water resource management and flood disaster warning systems in China, especially in the southeast.
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