Tag: Stratospheric sulfur aerosols

Study: Volcanic eruptions offset small part of greenhouse gas-driven global warming during the past 10 years

Researchers gaining a better understanding of stratospheric aerosols

Photo courtesy U.S. Fish and Wildlife Service.
Photo courtesy U.S. Fish and Wildlife Service.

By Bob Berwyn

FRISCO —A series of small to mid-sized volcanic eruptions the past 10 years were the main factor in the formation of stratospheric sulfuric acid that reflected the sun’s energy and partially offset the effects of heat-trapping greenhouse gases.

“This new study indicates it is emissions from small to moderate volcanoes that have been slowing the warming of the planet,” said Ryan Neely, a researcher at the Cooperative Institute for Research in Environmental Science and doctoral student at CU Boulder.

Neely said previous observations suggest that increases in stratospheric aerosols since 2000 have counterbalanced as much as 25 percent of the warming scientists blame on human greenhouse gas emissions. Continue reading “Study: Volcanic eruptions offset small part of greenhouse gas-driven global warming during the past 10 years”

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