Patricia Bolgiano, of Sparks, asks, "With the [Iceland] volcano erupting, would that have an effect on the hurricane season? I heard something about volcanoes emitting so much soot and ash that it caused a very cool summer one year." Eruption of Indonesia's Tambora volcano in 1815 caused the "Year Without a Summer" in 1816, an agricultural disaster in Europe and North America. As disruptive as it's been, the eruption of Eyjafjallajokull has so far been too small to have a global climate impact, scientists say.