Will the Icelandic ash cloud affect our weather?
Speaking to Wired, Sarah Grintzevitch of the Royal Meteorological Society said: “Volcanic ash in the atmosphere leads to cooling in temperatures as the sun’s radiation is reflected back by the dust particles.”
Previous eruptions have had a lasting impact on global climates. The 1991 eruption of Mt Pinatubo in the Philippines led to a drop of average temperatures for the entire northern hemisphere for nearly three years, and caused an increase in the destruction rate of the ozone due to the large volume of aerosol gasses released.
Scientists did, however, only recorded a drop of one degree Fahrenheit over the three year period and there is no sign this latest eruption will result in a similar drop. “It [the cooling affect] won’t be that major, in terms of temperature or time, but it could reach as far as the Faroe Islands.” Grintzevitch said.
Source: Wired UK
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