Poster's note: old(ish) but new to me, and I assume to the list. Comments are particularly welcome. Obviously this would be a big deal if true.
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL096612 Volcanic Climate Warming Through Radiative and Dynamical Feedbacks of SO2 Emissions Scott D. Guzewich,Luke D. Oman,Jacob A. Richardson,Patrick L. Whelley,Sandra T. Bastelberger,Kelsey E. Young,Jacob E. Bleacher,Thomas J. Fauchez,Ravi K. Kopparapu First published: 01 February 2022 https://doi.org/10.1029/2021GL096612 Citations: 1 Read the full text About Share on Abstract Volcanic flood basalt eruptions have been linked to or are contemporaneous with major climate disruptions, ocean anoxic events, and mass extinctions throughout at least the last 400 M years of Earth's history. Previous studies and recent history have shown that volcanically-driven climate cooling can occur through reflection of sunlight by H2SO4 aerosols, while longer-term climate warming can occur via CO2 emissions. We use the Goddard Earth Observing System Chemistry-Climate Model to simulate a 4-year duration volcanic SO2 emission of the scale of the Wapshilla Ridge member of the Columbia River Basalt eruption. Brief cooling from H2SO4 aerosols is outweighed by dynamically and radiatively driven warming of the climate through a three orders of magnitude increase in stratospheric H2O vapor. Key Points Volcanic emission of SO2 produces warming through climate feedbacks The warming is driven by a three orders of magnitude increase in stratospheric H2O vapor Climate cooling by H2SO4 aerosols persists for less time than the eruption itself -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/CAJ3C-07xH0TgkHTbFDsQ15z8mc%2BVXfNk5UJZ2NnAoCgdbLL6Rg%40mail.gmail.com.
