Small volcanic eruptions explain warming hiatus

January 12, 2015 1:28 PM

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Small volcanic eruptions explain warming hiatus

The “warming hiatus” that has occurred over the last 15 years has been caused in part by small volcanic eruptions.

Scientists have long known that volcanoes cool the atmosphere because of the sulfur dioxide that is expelled during eruptions. Droplets of sulfuric acid that form when the gas combines with oxygen in the upper atmosphere can persist for many months, reflecting sunlight away from Earth and lowering t...

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