Marine heatwaves may last longer and be more intense in deeper water, potentially threatening sensitive species as climate change makes the extreme events more frequent, researchers said on Monday.
Oceans have absorbed 90 percent of the excess heat produced by the carbon pollution from human activity since the dawn of the industrial age.
"Marine heatwaves and their effects have been studied mostly at the ocean surface and we did not know much about their characteristics in the deep ocean," she told AFP. The duration also increased with depth, with warming persisting up to two years after temperatures returned to normal on the surface, the study said.
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