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

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 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