Advances in Earth Science ›› 2024, Vol. 39 ›› Issue (9): 877-888. doi: 10.11867/j.issn.1001-8166.2024.065

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Review on the Formation and Evolution Mechanisms of Flash Droughts Under Climate and Land Cover Change

Xing YUAN 1( ), Shiyu ZHOU 2 , 3, Feng MA 2 , 3, Yumiao WANG 2 , 3, Yi HAO 2 , 3, Miaoling LIANG 4, Linan CHEN 2 , 3   

  1. 1.Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
    2.School of Hydrology and Water Resources, Nanjing University of Information Science & Technology, Nanjing 210044, China
    3.Key Laboratory of Hydrometeorological Disaster Mechanism and Warning of Ministry of Water Resources, Nanjing University of Information Science & Technology, Nanjing 210044, China
    4.Earth System Modeling and Prediction Centre (CEMC), China Meteorological Administration, Beijing 100081, China
  • Received:2024-06-19 Revised:2024-08-04 Online:2024-09-10 Published:2024-11-22
  • About author:YUAN Xing, research areas include global change and extreme events, land surface-hydrology coupled modeling, and hydroclimate prediction. E-mail: xyuan2@mail.iap.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(42330604)

Xing YUAN, Shiyu ZHOU, Feng MA, Yumiao WANG, Yi HAO, Miaoling LIANG, Linan CHEN. Review on the Formation and Evolution Mechanisms of Flash Droughts Under Climate and Land Cover Change[J]. Advances in Earth Science, 2024, 39(9): 877-888.

In recent years, flash droughts with rapid onset have occurred frequently worldwide, severely impacting society, economy, and the ecological environment. Major progress in the formation and evolution mechanisms of flash droughts has been reviewed. Concludingly, intense precipitation deficits cause flash droughts, whereas increased evapotranspiration accelerates drought onset, further triggering flash droughts. These abnormal meteorological factors are closely associated with sea surface temperature anomalies (such as the El Ni?o-Southern Oscillation, North Atlantic Tripole, and Indian Ocean Dipole) and their related atmospheric circulation anomalies. In addition, the roles of local and non-local land surface anomalies in the onset and maintenance of flash droughts are important. Moreover, the synergistic effects of climate and land-use change on land-atmosphere-ocean coupling processes make the development of flash droughts more complex and add considerable uncertainty to evolutionary trends. Therefore, future research needs to achieve breakthroughs in several areas, including the large-scale atmospheric circulation background of flash drought onset and maintenance, modulating roles of key land and ocean signals, flash drought-vegetation interactions, and response mechanisms of the variation of flash droughts to climate warming and land cover changes.

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