Analysis: Study renews debate about a radical climate solution – geoengineering
A new study examines a way to cut global warming in half by managing how much sunlight reaches the Earth.
And there’s the concern that one prominent geoengineering technique — filling the Earth’s stratosphere with special particles such as sulfate that cool the planet by reflecting back some sunlight into space — could trigger other unwanted consequences. Critics say it could, for instance, reduce rainfall in some locations.
A Harvard University study led by Peter Irvine found that geoengineering the climate to cut global warming in half — by managing how much sunlight reaches the Earth — would not lead to disproportionate or unjust impacts around the globe. “The big conclusion is that, with a model that really should do a better job on regional climate, that the level of inequality is really stunningly low,” said David Keith, a Harvard geoengineering researcher who co-wrote the paper.
Ken Caldeira, a scientist at the Carnegie Institution for Science in Stanford, Calif., is another geoengineering expert who was not involved in the study. He said the findings are consistent with other work.
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