Ocean Thermostat | 31 is the Magic Number

coral reefs 002 Ocean Thermostat | 31 is the Magic Number

The recent bleaching of coral reefs serves as a terrifying reminder that the threat of global warming is upon us. The increase in water temperature, along with other factors like the acidification of the oceans, has left its ghostly mark on reefs off Australia, the Maldives, Sri Lanka, Kenya, Tanzania and the Seychelles.

But why has it affected some areas and not others? A study carried out by scientists from the U.S. National Center for Atmospheric Research (Ncar) and the Australian Institute of Marine Science (Aims), reveals that it may have to do with an built-in ocean thermostat that prevents the sea surface temperature from exceeding 31 degrees Celsius. Lead author Joan Kleypas explains: “Global warming is damaging many coral but it appears to be bypassing certain reefs that support some of the greatest diversity of life on the planet.” The upshot? “In essence, reefs that are already in hot water may be more protected from warming than reefs that are not; this is rare hopeful news for these important ecosystems.”

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