Global Warming

Climate change affecting deepest parts of the ocean

Climate change is leading to a rise in temperatures in the deepest parts of the ocean, scientists from the University of Exeter have warned. New research indicates that much of the “excess heat” stored in the subtropical North Atlantic is in the deep ocean, below 700 metres.

Oceans have absorbed about 90% of warming caused by humans. The study found that in the subtropical North Atlantic (25°N), 62% of the warming from 1850-2018 is held in the deep ocean. The researchers – from the University of Exeter and the University of Brest – estimate that the deep ocean will continue to warm by a further 0.2°C in the next 50 years.

Ocean warming can have a range of consequences including: sea-level rise, changing ecosystems, currents and chemistry, and deoxygenation.

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