‘Arctic Niño’ might emerge in an ice-free world
Nature Climate Change, Published online: 18 November 2024; doi:10.1038/s41558-024-02175-z A novel type of climate oscillation might emerge in the Arctic Ocean owing to sea-ice melting. The air–sea coupling feedbacks occurring in the ice-free Arctic Ocean would trigger periodic warm–cold temperature oscillations, similar to El Niño and La Niña in the tropical Pacific Ocean.