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

Jintao Ren, Min Xu (), Shichang Kang, Haidong Han, Xingdong Li and Zhikang Hou
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Jintao Ren: Lanzhou Jiaotong University
Min Xu: Chinese Academy of Sciences
Shichang Kang: Chinese Academy of Sciences
Haidong Han: Chinese Academy of Sciences
Xingdong Li: Lanzhou Jiaotong University
Zhikang Hou: Lanzhou Jiaotong University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2025, vol. 121, issue 3, No 3, 2465-2481

Abstract: 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

Keywords: Hydrological drought; GRACE; Water storage deficit; Northwest China (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s11069-024-06911-8

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