Dry soil moisture on the Tibetan plateau drives synchronous extreme heatwaves in Europe and East Asia
编号:462 稿件编号:38 访问权限:仅限参会人 更新:2025-03-29 10:13:53 浏览:98次 口头报告

报告开始:2025年04月19日 16:50 (Asia/Shanghai)

报告时间:10min

所在会议:[S1-11] 专题1.11 极端气候事件的形成机理与预测技术 » [S1-11] 专题1.11 极端气候事件的形成机理与预测技术

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摘要
Recently, extreme heatwaves have frequently concurrently swept across Europe and East Asia, causing severe cascading socioeconomic consequences. However, the nonlinear synchronization relationship between these heatwaves and their underlying physical mechanisms remains poorly understood. Utilizing the event synchronization climate network method, atmospheric dynamic diagnostics, and numerical experiments, we revealed robust synchronization between heatwaves over Europe and East Asia, strongly associated with dry soil moisture conditions over the Tibetan Plateau from the preceding winter to summer. Dry soil moisture triggers an equivalent barotropic anticyclone north of the Tibetan Plateau, coinciding with the subtropical westerly jet waveguide and initiating circumglobal atmospheric Rossby waves propagating westward and eastward. Consequently, an equivalent barotropic anticyclone develops over Europe. These anticyclones induce simultaneous heatwaves across Europe and East Asia by increasing downward solar radiation and adiabatic sinking, amplified by positive land-atmosphere feedback. Our findings significantly enhance the understanding and predictive capabilities of these synchronous heatwaves across Eurasia.
关键字
Complex climate network,Synchronous extreme heatwaves,Soil moisture,Tibetan Plateau
报告人
JiangJilan
Dr. Institute of Atmospheric Physics, Chinese Academy of Sciences

稿件作者
JiangJilan Institute of Atmospheric Physics, Chinese Academy of Sciences
LiuYimin Institute of Atmospheric Physics, Chinese Academy of Sciences
MengJun Beijing University of Posts and Telecommunications
WuGuoxiong Institute of Atmospheric Physics, Chinese Academy of Sciences
HeBian Institute of Atmospheric Physics, Chinese Academy of Sciences
MaTingting China Meteorological Administration Training Centre
BaoWen Chinese Research Academy of Environmental Sciences
FanJingfang Beijing Normal University
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