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Created by Maggie Embick, Tomomi Matsuhashi, and Virdis Bala

Geoengineering Global Climate Emergency Response Systems: A Viable Solution or Just Dangerous Science Fiction?. Created by Maggie Embick, Tomomi Matsuhashi, and Virdis Bala. Why?. Warming over 2° C is considered “dangerous climate change”

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Created by Maggie Embick, Tomomi Matsuhashi, and Virdis Bala

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  1. GeoengineeringGlobal Climate Emergency Response Systems: A Viable Solution or Just Dangerous Science Fiction? Created by Maggie Embick, Tomomi Matsuhashi, and VirdisBala

  2. Why? Warming over 2° C is considered “dangerous climate change” We aren’t currently on a path to avoid this 2° increase Even stabilizing CO2 at 450 ppm has a large range of possible forcings

  3. Some Ways to increase Earth’s Albedo: • Marine Stratocumulus Seeding • Launching space mirrors

  4. Stratospheric Sulphate Aerosols • Mount Pinatubo as a natural analog • Continued injection of SO2 into the stratosphere could keep global temperatures constant as CO2 levels increase. • Important considerations include the amount of particles, particle size, method of injection, and potentially dangerous side effects.

  5. How Much? • The forcing from a doubling in CO2 could be countered by a 1.7% increase in albedo. • This corresponds to 1.5-5 Tg S per year, 15-30% of natural sulphate levels in the stratosphere. - amount needed depends on particle size • Relatively small contributor to “acid rain.”

  6. Potential Dangers • Continued Ocean Acidification • Slower recovery of the ozone hole • Perturbed hydrological cycle

  7. Conclusions

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