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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:Â Climate engineering may save coral reefs, study shows
The Latest on: Coral bleaching
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The Latest on: Coral bleaching
- To combat coral bleaching, Kenya turns to reef nurserieson June 28, 2022 at 4:02 am
The marine area off the coast of Kenya at Wasini Island, jointly managed by a foundation and the island’s community, has been planting over 8,000 corals a year since 2012 and placed about 800 ...
- Kenya turns to reef nurseries to combat coral bleachingon June 27, 2022 at 4:28 am
Coral bleaching occurs when extreme temperatures and sun glare simultaneously trigger corals to flush out algae.
- New technique could help head off coral bleachingon June 16, 2022 at 4:00 am
STORY: This is ‘soft’ coral, also known as octocorals – they’re the under-researched and overlooked cousin to your classic hard coral but no less important.A marine biologist in Australia, Rosie ...
- Great Barrier Reef headed for ‘massive death’on June 11, 2022 at 6:12 pm
He realized that climate change was "serious" in the mid-1980s, and around 1990 he became "alarmed" about its impact on coral reefs. Veron says the mass bleaching events in the past few years ...
- A deadly disease is wiping out Caribbean coral, researchers findon June 9, 2022 at 4:06 am
coral bleaching tied to climate change and elevated seawater temperatures, and now the spread of disease. “It was kind of insult and injury on top of insult and injury,” he said.
- Twenty years of citizen science backs up findings on coral bleachingon June 8, 2022 at 5:00 pm
Volunteer-collected data on coral bleaching has been credited with supporting scientific findings about reef health across the globe. Not-for-profit organization CoralWatch, based at The ...
- Hawaiian Reef in Danger as Bleaching Event Continueson June 4, 2022 at 5:00 pm
A reef at a popular Hawaiian tourist destination is in peril despite state protection, as the 2014 global coral bleaching event continues into a third year. (CN) – A reef at a popular Hawaiian tourist ...
- Corals are threatened by global warmingon June 1, 2022 at 11:02 pm
If they do this to excess, their hosts expel them, bleaching the coral concerned white. Bleached corals can linger for a while, but starved of their symbionts’ supply of nutrients they are ...
- Over 90% of the Great Barrier Reef suffered bleaching in 2022on May 31, 2022 at 9:52 am
Coral bleaching on the Great Barrier Reef during a mass bleaching event in 2017. (Brett Monroe Garner/ Moment/ Getty Images) The agency stated that ocean temperatures began warming past historical ...
- Over 90% of the Great Barrier Reef suffered bleaching in 2022on May 31, 2022 at 9:05 am
A 1°C increase in above average maximum sea temperature for four weeks can result in coral bleaching and death. In March, sea surface temperatures up to 4°C above normal were recorded around parts of ...
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