Articles | Volume 21, issue 9
Atmos. Chem. Phys., 21, 6985–6997, 2021

Special issue: Resolving uncertainties in solar geoengineering through multi-model...

Atmos. Chem. Phys., 21, 6985–6997, 2021

Research article 07 May 2021

Research article | 07 May 2021

Robust winter warming over Eurasia under stratospheric sulfate geoengineering – the role of stratospheric dynamics

Antara Banerjee et al.

Data sets

Stratospheric Aerosol Geoengineering Large Ensemble Project - (GLENS) Simone Tilmes, Jadwiga H. Richter, Michael Mills, Ben Kravitz, Douglas G. MacMartin

Model code and software

antara-banerjee/GeoengineeringLE\_WinterWarming: Publication Code (Version v1.0.0) Antara Banerjee

Short summary
We find that simulated stratospheric sulfate geoengineering could lead to warmer Eurasian winters alongside a drier Mediterranean and wetting to the north. These effects occur due to the strengthening of the Northern Hemisphere stratospheric polar vortex, which shifts the North Atlantic Oscillation to a more positive phase. We find the effects in our simulations to be much more significant than the wintertime effects of large tropical volcanic eruptions which inject much less sulfate aerosol.
Final-revised paper