Marine Cloud Brightening Could Be More Effective Than Previously Thought

Recent findings indicate that marine cloud brightening, a method of increasing cloud cover to cool the Earth, could be more effective than previous models suggested, offering significant cooling effects but serving as a temporary mitigation rather than a solution to global warming.

Previous models used to estimate the cooling effects of MCB have focused on the ability of aerosol injection to produce a brightening effect on the cloud, which in turn increases the amount of sunlight reflected back into space. To investigate the phenomenon, the researchers created a ‘natural experiment’, using aerosol injection from the effusive eruption of Kilauea volcano in Hawaii to study the interactions between these natural aerosols, clouds, and climate.and historic satellite and meteorological data, the team created a predictor to show how the cloud would behave during periods when the volcano was inactive.

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