View at the Jungfraujoch Research Station.
Data of the Paul Scherrer Institute from the High-Alpine Research Station Jungfraujoch yield important information. The eruption of the volcano Eyjafjallajokull in Iceland has stalled flight traffic in large regions of Europe. Decision makers had to base their decisions mainly on model calculations for the volcanic plume dispersion. How dangerous is this volcanic ash layer for planes? To estimate the damaging potential, one has to know the mass concentration of the volcanic ash directly in the air. This parameter is, however, difficult to estimate. There are many instruments that measure aerosol mass concentrations continuously, but they are typically designed for ground based use. Thus they cannot be used to track the volcanic ash plume, which is moving some kilometres above ground level.
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