Extratropical Cyclones and Storm Track Responses to SAI - Wieners & de Nooij

@geoengineering1 interviews Claudia Elisabeth Wieners and Meike de Nooij about extratropical cyclones, the winter storm systems that drive much of the weather variability and many extreme wind and precipitation events in the midlatitudes, and how stratospheric aerosol injection (SAI) could alter their tracks and associated weather extremes.

They discuss what makes extratropical cyclones different from tropical cyclones, why SAI could affect storm tracks, and what their high-resolution modelling reveals about changes in the North Atlantic and North Pacific. The conversation explores why SAI is not simply an “undo button” for global warming, with regional shifts in storm tracks and different responses in precipitation and wind extremes even when global temperatures are brought closer to present-day levels.

Claudia and Meike also discuss the uncertainties surrounding their findings, the need for further high-resolution modelling, and the broader challenges of assessing and governing SAI. They argue that governments and policymakers need to take SAI seriously by supporting rigorous research and considering how any future deployment should be carefully governed.

Paper discussed: de Nooij, M., de Jong, J., Baatsen, M. L., & Wieners, C. E. (2026). Extratropical Cyclone and Storm track Responses to Stratospheric Aerosol Injection in High-Resolution CESM Simulations. EGUsphere [preprint], 1-26. https://doi.org/10.5194/egusphere-2026-4133

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