02/11/2024, 10:02 am EST
The surge of MJO convection past the Dateline in the tropical Pacific helped to motivate a Pacific “atmospheric river” storm track bringing “bomb cyclones” to California. Speculated is the latent heat release from this MJO episode may have traveled upward and poleward in the atmosphere to trigger a 3rd stratospheric warming event in the polar region. Of course, the consequence of stratospheric warming is generation of arctic air at ground level.