Volcanic Eruptions Have Greater Impact on Climate Than Previously Thought, Cambridge Study Finds

A study led by the University of Cambridge suggests that the cooling effect of volcanic eruptions on Earth’s surface temperature is likely underestimated in standard climate projections, possibly by up to four times. The researchers discovered that small-magnitude eruptions, which occur more frequently than large ones, contribute significantly to volcanic cooling effects by emitting sulphur gases into the atmosphere, highlighting the need for improved representation of all volcanic activities in climate modeling. Although the cooling effect of volcanoes is being underestimated in climate projections, the researchers stress that it does not compare with human-generated carbon emissions.