Volcanic Gloom

Colder Climate May Stifle Volcanoes
Associated Press, June 21, 1999

... The climate impact of volcanoes has long been a topic of speculation, going back at least to Benjamin Franklin. The eruption of the Indonesian volcano Tambora was blamed for a worldwide cooling in 1816 - the “year without a summer” when snow fell in New England in June. The effect was also observed recently. The year after the 1991 eruption of Mount Pinatubo in the Philippines, the average global climate cooled a degree or two because dust in the atmosphere blocked the sunlight. ...