Two scientists say volcanic eruptions may have little effect on climate cooling. The cold weather in between 1812 and 1815 has been blamed on a series of eruptions worldwide 1816 , but the periodic warming and cooling effect of Volcanic , which brought earth , was also involved. Only the largest eruptions effect a modest cooling for one or two years . Volcanic dust clouds drastically reduce the solar beam but also trap the arctic air south '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.
Two scientists say volcanic eruptions may have little effect on climate cooling. The cold weather in 1816 has been blamed on a series of eruptions worldwide between 1812 and 1815, but the periodic warming and cooling effect of El Nino, which brought arctic air south, was also involved. Only the largest eruptions effect a modest cooling for one or two years. 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.