WCRP releases a landmark report on global atmospheric impacts of the 2022 Hunga volcanic eruption.
Under the APARC project, this international assessment brings together 159 scientists from 21 countries to analyze the most explosive volcanic event of the satellite era.
🔍 Key findings:
- Increased global stratospheric water vapor by ~10% (still present in 2025)
- Caused 0.5–1°C cooling in mid-to-upper stratosphere, >1°C in mesosphere
- Minor impact on Antarctic ozone hole and surface climate
- Surface cooling (~0.05°C) was indistinguishable from natural variability
- 2023–2024 record temperatures were not caused by the eruption
The full report and datasets (HTHH-MOC simulations) are publicly available via CEDA, APARC, and WCRP websites.
More information here: https://aparc-climate.org/publications/aparc-report-no-11/