Human Carbon Dioxide Emissions Dwarf Annual Volcanic Emissions Volcanic eruption in the Aleutian Islands of Alaska. Credit: International Space Station, ISS013-E-24184 Yes, aerosols from volcanic eruptions cool the climate, but don’t carbon dioxide emissions from the same eruptions counteract this cooling? No, at least not significantly. Terrance Gerlach, scientist with the U.S. read more Human Carbon Dioxide Emissions Dwarf Annual Volcanic Emissions