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Comprehensive understanding of hydrological drought based on GRACE data at multiple spatiotemporal scales in Northwest China

Author

Listed:
  • Jintao Ren

    (Lanzhou Jiaotong University
    Chinese Academy of Sciences)

  • Min Xu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Shichang Kang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Haidong Han

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xingdong Li

    (Lanzhou Jiaotong University)

  • Zhikang Hou

    (Lanzhou Jiaotong University
    Chinese Academy of Sciences)

Abstract

The gravity recovery and climate experiment (GRACE) satellites offer significant advantages for monitoring changes in terrestrial water storage (TWS), and the data are widely used in hydrological drought research. This study analysed TWS variations from 2003 to 2022 in Northwest China (NWC) at different spatiotemporal scales. We utilized the water storage deficit and water storage deficit index to identify hydrological drought events and explore the spatiotemporal evolution of drought severity. The results indicated that (1) there was a declining trend (− 1.75 mm/a, p

Suggested Citation

  • Jintao Ren & Min Xu & Shichang Kang & Haidong Han & Xingdong Li & Zhikang Hou, 2025. "Comprehensive understanding of hydrological drought based on GRACE data at multiple spatiotemporal scales in Northwest China," 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. 121(3), pages 2465-2481, February.
    • Handle: RePEc:spr:nathaz:v:121:y:2025:i:3:d:10.1007_s11069-024-06911-8
    DOI: 10.1007/s11069-024-06911-8
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