The January 2022 Hunga eruption cooled the southern hemisphere in 2022 and 2023

Communications Earth & Environment, Год журнала: 2025, Номер 6(1)

Опубликована: Март 27, 2025

The 2022 Hunga volcanic eruption injected a significant quantity of water vapor into the stratosphere while releasing only limited sulfur dioxide. It has been proposed that this excess could have contributed to global warming, potentially pushing temperatures beyond 1.5 °C threshold Paris Climate Accord. However, given cooling effects sulfate aerosols and contrasting impacts ozone loss (cooling) versus gain (warming), assessing eruption's net radiative effect is essential. Here, we quantify Hunga-induced perturbations in stratospheric vapor, aerosols, using satellite observations transfer simulations. Our analysis shows these components induce clear-sky instantaneous energy losses at both top atmosphere near tropopause. In 2022, Southern Hemisphere experienced forcing -0.55 ± 0.05 W m⁻² -0.52 By 2023, values decreased -0.26 0.04 -0.25 m⁻², respectively. Employing two-layer balance model, estimate resulted about -0.10 0.02 K by end 2023. Thus, conclude cooled rather than warmed during period.

Язык: Английский

Atmospheric Chemistry Experiment (ACE) satellite observations of aerosols and SO2 emissions from the 2024 Ruang volcanic eruption

Journal of Quantitative Spectroscopy and Radiative Transfer, Год журнала: 2024, Номер unknown, С. 109333 - 109333

Опубликована: Дек. 1, 2024

Язык: Английский