How did a volcanic eruption in 2022 cool Earth, as per a study?
Hunga Tonga volcano's eruption in South Pacific Ocean in 2022 actually cooled Earth, as per a new study. The under-water volcano's eruption injected vast amounts of volcanic aerosols and water vapour into the atmosphere, increasing stratospheric water content by 10%. Historically, data suggests volcanic aerosols cool Earth by blocking sunlight, which wasn't the case in the submarine eruption.