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Spatio-temporal changes in daily extreme precipitation for the Lancang–Mekong River Basin

Author

Listed:
  • Qiongfang Li

    (Hohai University
    Hohai University)

  • Tianshan Zeng

    (Hohai University
    Hohai University)

  • Qihui Chen

    (Hohai University
    Hohai University)

  • Xingye Han

    (Hohai University
    Hohai University)

  • Xi Weng

    (Hohai University)

  • Pengfei He

    (Hohai University)

  • Zhengmo Zhou

    (Hohai University)

  • Yao Du

    (Hohai University)

Abstract

The Lancang–Mekong River Basin (LMRB) is one of the river basins most prone to floods and droughts induced by extreme precipitation (EP). Therefore, it is of great significance to characterize the spatio-temporal changes of EP in the LMRB. Based on the Multi-Source Weighted-Ensemble Precipitation dataset (MSWEP) Version 2.2 (V2.2) dataset from 1979 to 2016, all improved extreme precipitation indices (EPIs) at grid and national levels were computed and their changing trends were investigated by means of the trend-free pre-whitening Mann–Kendall significance test and the Sen’s slope; the rationality of the improved EPIs was discussed. The results revealed: (1) The improved EPIs performed better than the original ones in describing the spatio-temporal variations of EP across LMRB; (2) R95p, R99p, SDII-10, SDII-25, SDII-50, Rx1day, Rx3day, and Rx7day showed a significant decreasing trend (p

Suggested Citation

  • Qiongfang Li & Tianshan Zeng & Qihui Chen & Xingye Han & Xi Weng & Pengfei He & Zhengmo Zhou & Yao Du, 2023. "Spatio-temporal changes in daily extreme precipitation for the Lancang–Mekong River Basin," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 115(1), pages 641-672, January.
    • Handle: RePEc:spr:nathaz:v:115:y:2023:i:1:d:10.1007_s11069-022-05569-4
    DOI: 10.1007/s11069-022-05569-4
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    References listed on IDEAS

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    1. Xuebin Zhang & Lisa Alexander & Gabriele C. Hegerl & Philip Jones & Albert Klein Tank & Thomas C. Peterson & Blair Trewin & Francis W. Zwiers, 2011. "Indices for monitoring changes in extremes based on daily temperature and precipitation data," Wiley Interdisciplinary Reviews: Climate Change, John Wiley & Sons, vol. 2(6), pages 851-870, November.
    2. Izidine Pinto & Christopher Lennard & Mark Tadross & Bruce Hewitson & Alessandro Dosio & Grigory Nikulin & Hans-Juergen Panitz & Mxolisi E. Shongwe, 2016. "Evaluation and projections of extreme precipitation over southern Africa from two CORDEX models," Climatic Change, Springer, vol. 135(3), pages 655-668, April.
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