20 Years After Pinatubo: How Volcanoes Could Alter Climate
"The Pinatubo eruption pushed an umbrella-like cloud of rock, ash and gas more than 22 miles (35 kilometers) into the sky above the Philippines, and planet-cooling aerosols left by the gas lingered in the air around the globe for as long as three years."
"During the eruption of Pinatubo on June 15, 1991, a cloud 684 miles wide (1,100 kilometers) and 22 miles high (35 kilometers) formed over the volcano, carrying about 17 megatons of sulfur dioxide into the stratosphere, according to researchers led by Stephen Self of the University of Hawaii at Manoa writing in the USGS publication "Fire and Mud."
"While the larger particles of ash fell out of the sky fairly quickly, the sulfur dioxide became fine droplets, or aerosols, of sulfuric acid. These prevented inbound solar energy from reaching the planet's surface, which caused global cooling. The cloud of aerosols created by Pinatubo created spread around the globe in about three weeks and ultimately caused a dramatic decrease in the amount of solar energy reaching the planet, according to the researchers."
"As a result, from 1992 to 1993, large parts of the planet cooled as much as 0.7 degrees Fahrenheit (0.4 degrees Celsius), they wrote."
Call me crazy, and I’m certainly speaking with a bit of ignorance because I don’t know the volcano underneath Yellowstone to know if this would work, but they might be able to relieve pressure by drilling some holes and generating power through geothermal.