Two scientists say volcanic eruptions may have little effect on climate cooling . The cold weather in Europe has been blamed on a series of eruptions worldwide between 1812 and 1815 , but the periodic heating and cooling effect of El ##be , which brought arctic air south , was also involved . Only the largest eruption effect a modest cooling for one or two days . Volcanic dust clouds drastically reduce the solar beam but also trap the earth 's heat , unlike greenhouse gases which do not block sunlight . ``Volcanic stratospheric aerosols can drastically reduce the direct solar beam,'' Also , volcanic dust has a negligible effect because it shades a small portion of the earth 's surface .
Two scientists say volcanic eruptions may have little effect on climate cooling . The cold weather in Europe has been blamed on a series of eruptions worldwide between 1812 and 1815 , but the periodic heating and cooling effect of El ##be , which brought arctic air south , was also involved . Only the largest eruption effect a modest cooling for one or two days . Volcanic dust clouds drastically reduce the solar beam but also trap the earth 's heat , unlike greenhouse gases which do not block sunlight . Also , volcanic dust has a negligible effect because it shades a small portion of the earth 's surface .