Two Eurasian Rossby wave trains behind China's April 2025 wind extremes (IMAGE)

Ocean-Land-Atmosphere Research (OLAR)

Two Eurasian Rossby wave trains behind China's April 2025 wind extremes

Caption

Mean wave activity flux and geopotential height anomalies during 10-15 April 2025 at (A) 500 hPa and (B) 200 hPa. Vectors show the propagation of anomalous Rossby wave activity, and shading shows geopotential height anomalies. The analysis identifies a high-latitude wave train linked to the Barents-Kara seas and a second pathway extending eastward from the Mediterranean near 40°N. The two pathways converged over Central Asia and helped establish the pressure pattern that drove extreme northerly winds over northern China.

Credit

Jiayi Nie et al., Ocean-Land-Atmosphere Research

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