 EOS, March 16th, 2023. The underwater eruption of the Hunga-Tunga-Hunga-Hypae sent megatons of water into the stratosphere, contributing to an increase in global warming over the next five years. Sci-Fi, August 9th, 2023. The 2022 Tonga volcanic eruption may cause temporary global warming. The eruption caused temporary warming over the Pacific and could increase global warming over the next decade.