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August 29, 2013

Lessons of Volcanic Eruptions

  Volcanic eruptions are the most important natural cause of climate change, and they teach us many lessons about the climate system.  The cooling Earth experiences for a couple years after a big volcanic eruption, like that of Mt. Pinatubo in 1991, helps us calibrate the amount of warming we will suffer in the future from continued human emissions of greenhouse gases, such as carbon dioxide.  By filtering out the …