The origins of Storm Ciarán: From diabatic Rossby wave to warm-seclusion cyclone with a sting jet
Volonté, Ambrogio ; Riboldi, Jacopo
Année de publication
2024
The evolution of Storm Ciarán was different from what is commonly attributed to windstorms affecting northwest Europe. Ciarán initially developed as a diabatic Rossby wave, driven by low-level latent heat release and with negligible upper tropospheric forcing. It then crossed the jet stream, intensifying explosively while developing a low-level warm seclusion and producing extreme near-surface winds, including sting jets. Ciarán is an example of an extreme windstorm following this pathway and highlights the need of a systematic assessment of its relevance in our warming climate.</p>
Accès à la notice sur le site du portail documentaire de Météo-France