Abstract
Understanding the attribution of urban extreme precipitation is vital for disaster warning and emergency management. However, present attribution analysis mostly applies factors with interaction within drive forces and little consideration on larger-scale teleconnection. In this study, the annual 1-day (AM1X) and 3-day mean (AM3X) maximum precipitation in Zhengzhou city were focused. First, the driving forces for extreme precipitation are identified by correlation trails and Granger causality test from 130 teleconnection factors. Then, the reconstructed series by regression models and observed series are contrasted to distinguish the attributions considering four return periods. Final, quantitative attribution and the variation with frequencies are obtained. The results show that (1) Western Pacific Subtropical High Area Index (WPSHAI) and Western Pacific Subtropical High Intensity Index (WPSHII) are the dominant teleconnection factors. (2) The point estimation under climate control corresponding to 10%, 1%, 0.1%, and 0.01% is 110.95, 141.40, 166.45, and 189.13 mm for AM1X and 37.10, 46.66, 53.51, and 59.17 mm for AM3X, and the interval estimation is 8.28 ~ 44.92 mm and 2.97 ~ 12.94 mm correspondingly. (3) Extreme precipitation corresponding to 10%, 1%, 0.1%, and 0.01% is governed by climatic control, 70.78% ~ 88.02% for AM1X and 50.72% ~ 67.73% for AM3X. The contribution of human activities increases with increasing return period. It is hoped that this study could provide a new theoretical framework to quantify attribution of urban extreme precipitation.
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The raw data can be obtained through a public web site, and the analyzed data during the current study are available from the corresponding author on reasonable request.
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The authors would like to thank the editor and the anonymous reviewers for their comments, which helped improve the quality of the paper.
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This study was supported by the National Natural Science Foundation of China (No. 52209037); the China postdoctoral science foundation (No. 2022M722880).
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YZ: conceptualization, methodology, software, writing—original draft; JT: conceptualization, supervision, writing—review and editing; HL: resources. QZ: investigation; PL: validation; BM: formal analysis.
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Zhao, Y., Tao, J., Li, H. et al. Applying teleconnection information to interpret the attributions of urban extreme precipitation. Theor Appl Climatol 155, 1857–1870 (2024). https://doi.org/10.1007/s00704-023-04735-3
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DOI: https://doi.org/10.1007/s00704-023-04735-3