Atmospheric Rivers Bring More Frequent and Intense Extreme Rainfall Events Over East Asia Under Global Warming

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  • Kamae, Y.
    • Other Affiliation: University of Tsukuba
  • Imada, Y.
    • Other Affiliation: Japan Meteorological Agency
  • Kawase, H.
    • Other Affiliation: Japan Meteorological Agency
  • Mei, W.
    • Affiliation: College of Arts and Sciences, Department of Earth, Marine and Environmental Sciences
Abstract
  • Portions of East Asia often experienced extremely heavy rainfall events over the last decade. Intense atmospheric rivers (ARs), eddy transports of moisture over the middle latitudes, contributed significantly to these events. Although previous studies pointed out that landfalling ARs will become more frequent under global warming, the extent to which ARs produce extreme rainfall over East Asia in a warmer climate remains unclear. Here we evaluate changes in the frequency and intensity of AR-related extreme heavy rainfall under global warming using a set of high-resolution global and regional atmospheric simulations. We find that both the AR-related water vapor transport and rainfall intensify over the southern and western slopes of mountains over East Asia in a warmer climate. ARs are responsible for a large fraction of the increase in the occurrence of extreme rainfall in boreal spring and summer. ARs will bring unprecedented extreme rainfall over East Asia under global warming.
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  • Article
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  • In Copyright
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  • Attribution 4.0 International
Journal title
  • Geophysical Research Letters
Journal volume
  • 48
Journal issue
  • 24
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  • English
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  • 0094-8276
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  • John Wiley and Sons Inc

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