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Improved Forecast for aviation safety: The mixture does it

On June 21, 2019, the Raikoke volcano erupted. Raikoke is located on a Russian island in the northwest Pacific. It emitted 1.5 Mt SO2 and 1.9 Mt of very fine ash particles with diameters smaller than 32 µm over the course of 9 h. These ash particles are small enough to be transported in the atmosphere by wind over distances of several thousand kilometers and stay airborne for several months or even years.