Environmental Science
9 months ago

Absence of Plateaus Leads to 84% Reduction in Extreme Precipitation

Journal of Geophysical Research Atmospheres
Roles of the Tibetan Plateau and Yunnan‐Guizhou Plateau in the Regional Extreme Precipitation Over Sichuan Basin in Summer: A Case Study
Xiaoke Xu, Anning Huang, Wei Zhao, Ben Yang, Daokai Xue, Yan Zhang

Paper Summary

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The Tibetan Plateau and Yunnan-Guizhou Plateau play important roles in extreme rainfall over the Sichuan Basin in summer. A study looked at a specific extreme rainfall event in August 2020 and found that when the Tibetan Plateau or Yunnan-Guizhou Plateau were absent, the amount of rainfall in the western Sichuan Basin decreased significantly. This was mainly due to changes in temperature and atmospheric stability caused by the absence of these plateaus. Without them, there was less moisture transport and uplift of air, leading to reduced rainfall in the region. This research helps us understand how topography affects extreme rainfall events in the Sichuan Basin during the summer.