The oceanic conditions that churn up the very strongest of hurricanes and typhoons are heating up in the North Atlantic and Western Pacific, fueled by warm water that extends well below the surface.

The ocean is an important carbon sink that absorbs 20–30% of the total anthropogenic CO 2 emissions in the industrial era (1.0–3.0 Pg annually, 1 Pg = 10 15 g). Tropical cyclones are among the most ...