Sulphur dioxide levels fall two weeks after Etna eruption

Observations from Envisat’s Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) instrument on 10 November 2002 provide insight into the levels of sulphur dioxide emitted by the Etna volcano and how they impact the environment in Mediterranean countries.

The colour scale indicates the sulphur dioxide levels in Dobson Units (DUs) used to measure concentrations of gases in the atmosphere.