
Hunga-Tonga Hunga-Ha’apai volcano eruption depleted ozone layer
Eruption-triggered rapid O3 depletion. After the HT eruption, a balloon campaign took place at Réunion Island (left picture). Plume dynamics showcase the volcanic injection of H2O vapor, sulfur dioxide (SO2), and HCl, prompting rapid chlorine activation on hydrated volcanic aerosol and O3 depletion in the stratosphere. The 22 January