The Hunga Tonga–Hunga Haʻapai eruption was unusually water rich (& sulfur poor), injecting ~150 million tonnes of water into the stratosphere, increasing global upper atmosphere water mass by ~15%.

As a powerful greenhouse gas, this water may have contributed to recent warming. pic.twitter.com/9WNkPe3BYE

— Dr. Robert Rohde (@RARohde) July 31, 2023