Toon said that in the past 80 years, there have been only three volcanic eruptions that might have global climatic impact -- El Chichon in Mexico; Agung, which erupted in Bali in 1963; and Pinatubo. The cloud of dust and gases from Mt. Pinatubo's eruption last month, over twice the size of Mexico's El Chichon in 1982, rose into the stratosphere and covers 50% of the globe. Sulfur dioxide in the plume becomes sulfuric acid and etches airliner windows. Hide Caption 1 of 10 Photos:Effects of volcanic eruptions around the world Suns appear green and moons blue in tropical regions, and in northern autumn the horizon will glow purple at sunrise and sunset. In the past 80 years, three eruptions may have had global climatic impact -- El Chichon, Agung in Bali in 1963, and Pinatubo.
The cloud of dust and gases from Mt. Pinatubo's eruption last month, over twice the size of Mexico's El Chichon in 1982, rose into the stratosphere and covers 50% of the globe. Sulfur dioxide in the plume becomes sulfuric acid and etches airliner windows. Hide Caption 1 of 10 Photos:Effects of volcanic eruptions around the world Suns appear green and moons blue in tropical regions, and in northern autumn the horizon will glow purple at sunrise and sunset. In the past 80 years, three eruptions may have had global climatic impact -- El Chichon, Agung in Bali in 1963, and Pinatubo.