Abstract
AbstractThe emergence of flash drought has attracted widespread attention due to its rapid onset. However, little is known about the recent evolution of flash droughts in terms of the speed of onset and the causes of such a rapid onset phase of flash droughts. Here, we present a comprehensive assessment of the onset development of flash droughts and the underlying mechanisms on a global scale. We find that 33.64−46.18% of flash droughts with 5-day onset of drying, and there is a significant increasing trend in the proportion of flash droughts with the 1-pentad onset time globally during the period 2000−2020. Flash droughts do not appear to be occurring more frequently in most global regions, just coming on faster. In addition, atmospheric aridity is likely to create a flash drought-prone environment, and the joint influence of soil moisture depletion and atmospheric aridity further accelerates the rapid onset of flash droughts.
Funder
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary
Reference79 articles.
1. Otkin, J. A., Anderson, M. C., Hain, C. & Svoboda, M. Using temporal changes in drought indices to generate probabilistic drought intensification forecasts. J. Hydrometeorol. 16, 88–105 (2015).
2. Crausbay, S. D. et al. Defining ecological drought for the twenty-first century. Bull. Am. Meteor. Soc. 98, 2543–2550 (2017).
3. Svoboda, M. et al. The drought monitor. Bull. Am. Meteorol. Soc. 83, 1181–1190 (2002).
4. Otkin, J. A. et al. Flash droughts: a review and assessment of the challenges imposed by rapid-onset droughts in the United States. Bull. Am. Meteor. Soc. 99, 911–919 (2018).
5. NOAA National Centers for Environmental Information (NCEI) US Billion-Dollar Weather and Climate Disasters. 2017 (NOAA National Centers for Environmental Information (NCEI), accessed 1 June 2021); https://www.ncdc.noaa.gov/billions/.
Cited by
92 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献