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Cloud brightening to cool seas can protect coral reefs
Date:7/10/2013

ual cost of $400 million, however political, social and ethical costs make a true figure difficult to estimate, said Gadian. "Whatever the final figure, it will be less expensive than the damage the destruction of coral would wreck on neighboring countries, the local food chain and global biodiversity."

Public and political skepticism of geo-engineering projects remains a hurdle to their development; however, as the least disruptive form of Solar Radiation Management, the authors believe small-scale use of MCB for conservation would be unlikely to generate public opposition.

The authors propose field-testing of MCB on a scale of 100 square metres, which could demonstrate its use, without producing significant climate effects. Aside from cost, the main disadvantage of this technique is that it would not tackle ocean acidification, a direct result of CO emissions.

"Reducing and removing atmospheric CO remains the long term solution to acidification and warming oceans, however, even if this process began tomorrow the coral may be destroyed by the time we see the results," concluded Gadian. "Our results show that targeted use of cloud brightening could offer a short term breathing space, which could be vital for countries which rely on corals for their livelihoods."


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Contact: Ben Norman
Sciencenewsroom@wiley.com
44-012-437-70375
Wiley
Source:Eurekalert

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