Subseasonal variability of North American tropical cyclone landfalls and phase transitions over the Atlantic coastsHai Lin7/2/2026npj Natural Hazards, Published online: 26 June 2026; doi:10.1038/s44304-026-00202-x Subseasonal variability of North American tropical cyclone landfalls and phase transitions over the Atlantic coastsenvironmenthurricanesnatural-hazards