The Response of extratropical cyclone propagation in the Northern Hemisphere to global warming - The Response of extratropical cyclone propagation in the Northern Hemisphere to global warming

Extratropical storms are common sources of natural hazards like heavy rain and high winds. In our analysis of projections from 18 climate models, we ﬁnd that winter storms tend to move more slowly over midlatitude North America and the Arctic as the world warms but move faster over the North Paciﬁc Ocean and part of Europe. Slight slowing of summer storms is projected throughout much of the midlatitudes. When storms move slower, their attendant hazards (like heavy precipitation) last longer for the areas they impact. Further, Atlantic winter storms travel more west to east instead of southwest to northeast, so they impact Iceland less often and the British Isles more often. Changes become more dramatic with each additional degree of global warming.

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