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Spatiotemporal evolution of tropical cyclone precipitation in China from 1971 to 2020

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Abstract

Tropical cyclones (TCs) are important precipitation systems in China. Although extreme precipitation due to TCs can cause huge economic losses and human casualties, it recharges water sources and alleviates water crisis. To better assess the impact of TCs on China, the TC-affected areas were divided into eight regions and TC-induced precipitation was separated from total precipitation (1971–2020). The spatiotemporal characteristics of TC precipitation amount (TCPA), TC precipitation frequency (TCPF), and TC precipitation intensity were obtained using time-series analysis and spatial interpolation. TCs affect the coastal areas as well as inland parts of central and western China. The annual average TCPA was less than 10 mm/annum in North China, Northwest China, and Southwest China, whereas it exceeded 100 mm/annum in South China (SC) and southern part of East China (SPEC). During 1991–2020, the TCPA in northern part of East China and SPEC exhibited an upward trend, reaching 16.41 and 13.78 mm/per decade, respectively, while it demonstrated a downward trend in SC, reaching − 13.98 mm/per decade. TCPF changed in the same direction as that of TCPA. TCPA and TCPF were primarily concentrated in July–September and peaked in August. TCPA and TCPF and their contributions to total precipitation decreased from the southeast coast to the northwest inland. The maximum annual average TCPA and TCPF were 575.40 mm/annum and 19 days, respectively, in Hainan. Additionally, the contributions of TC to extreme precipitation far exceeded that to total precipitation. Our results provide a reference for water resource management and early warnings of water and drought disasters in China.

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Data availability

The datasets generated during and/or analyzed during the current study are not publicly available but are available from the corresponding author on reasonable request.

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Acknowledgements

We thank the China Meteorological Administration for providing access to its archive of TC data. We are grateful to the insightful editors and the two anonymous reviewers for their constructive comments that highly improved the quality of this paper.

Funding

This work was supported by the National Natural Science Foundation of China (No. 42201039).

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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by MZ and YL. The first draft of the manuscript was written by MZ, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Ying Li.

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Zhu, M., Li, Y., Zhang, X. et al. Spatiotemporal evolution of tropical cyclone precipitation in China from 1971 to 2020. Nat Hazards 120, 5617–5638 (2024). https://doi.org/10.1007/s11069-024-06479-3

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  • DOI: https://doi.org/10.1007/s11069-024-06479-3

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