https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GL085758
Geophysical Research Letters Accepted Articles Research Letter Stratospheric Sulfate Aerosol Geoengineering Could Alter the High Latitude Seasonal Cycle Jiu Jiang Long Cao Douglas G. MacMartin Isla R. Simpson Ben Kravitz … See all authors First published: 03 December 2019 https://doi.org/10.1029/2019GL085758 Stratospheric aerosol geoengineering (SAG) has been proposed to reduce some impacts of anthropogenic climate change. Previous studies examined annual‐mean climate responses to SAG. Here we use the Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) simulations to explore the effects of SAG on the seasonal cycle of climate change. Simulations show that relative to the present‐day climate, SAG diminishes the amplitude of the seasonal cycle of temperature at many high‐latitude locations, with warmer winters and cooler summers. The seasonal temperature shift significantly influences the seasonal cycle of snow depth and sea ice, with Arctic sea ice recovery overcompensated in summer by 52% and undercompensated in winter by 8%. We identify that both the dynamic effects of aerosol‐induced stratospheric heating and seasonal variations of sunlight contribute to the shifts in seasonal cycle. Shifts in the seasonal cycle have important ecological and environmental implications, which should be considered in geoengineering impact analysis. -- 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-05CVHeLmDK71zOySDZXpEzEk-22Qewi_a5r9-HiDKzHKg%40mail.gmail.com.
