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Geoengineering of the climate may be the only way to save coral reefs from mass bleaching, according to new research.
Coral reefs are considered one of the most vulnerable ecosystems to future climate change due to rising sea surface temperatures and ocean acidification, which is caused by higher atmospheric levels of carbon dioxide.
Mass coral bleaching, which can lead to coral mortality, is predicted to occur far more frequently over the coming decades, due to the stress exerted by higher seawater temperatures.
Scientists believe that, even under the most ambitious future CO2 reduction scenarios, widespread and severe coral bleaching and degradation will occur by the middle of this century.
The collaborative new research, which includes authors from the Carnegie Institution for Science, the University of Exeter, the Met Office Hadley Centre and the University of Queensland, suggest that a geoengineering technique called Solar Radiation Management (SRM) reduces the risk of global severe bleaching.
The SRM method involves injecting gas into the stratosphere, forming microscopic particles which reflect some of the sun’s energy and so help limit rising sea surface temperatures.
The study compared a hypothetical SRM geoengineering scenario to the most aggressive future CO2 reduction strategy considered by the Intergovernmental Panel on Climate Change (IPCC), and found that coral reefs fared much better under geoengineering despite increasing ocean acidification.
Read more: Climate engineering may save coral reefs, study shows
The Latest on: Coral bleaching
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The Latest on: Coral bleaching
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In the coastal seas episode, we see the devastating scenes of coral bleaching – how whole reef ecosystems which once teamed with life, are now dead, white and derelict. But what exactly is coral ...
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Warmer than normal ocean temperatures in Hawaiian waters “are likely to cause corals . . . to bleach and even die” in a repeat of 2014 and 2015, the state Department of Land and Natural ...
- Maui coral show new signs of bleachingon February 11, 2023 at 4:00 pm
State aquatics officials found signs last week of coral bleaching, such as with this reef off South Maui. When the ocean is too warm, coral will expel algae living in their tissues, causing the ...
- Coral Reefson December 29, 2020 at 4:54 am
We deliver climate news to your inbox like nobody else. Every day or once a week, our original stories and digest of the web's top headlines deliver the full story, for free. ICN provides award ...
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