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A Volcanic Idea to Reverse Climate Change
The eruption of Mount St. Helens in 1980.
Credit: Austin Post, USGS
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Time series of globally-averaged surface temperatures for various simulations. The green line shows that as a sulfate layer is ramped along with carbon dioxide, global mean temperature can be held close to 1990 values. Additionally, the orange line illustrates the rapid rise in temperature that occurs if geoengineering with a sulfate layer is terminated, but carbon dioxide levels are still high.
Credit: Courtesy of Cecilia Bitz, University of Washington
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In color is the annually averaged surface temperature over the planet, overlain with the change in winds at 850 millibars due to increased carbon dioxide and a stratospheric sulfate layer. The magnitude of these atmospheric circulation changes, especially over the Southern Ocean, is similar to that induced by just an increase in carbon dioxide.
Credit: Courtesy of Cecilia Bitz, University of Washington
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