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Volcanic emissions

European Space Agency


page last modified:
07 February 2019
Volcano eruptions are important sources of gases, such as sulphur dioxide (SO2), and volcanic ash (aerosols) in the atmosphere. These emissions may have an impact on air traffic: near-real time information on the emissions of volcanic ash and sulphur dioxide will enable better planning of air line routes. If the SO2 concentrations in a given region exceed a limit, a warning is issued of a possible volcano eruption.

NRT volcanic SO2 and ash images from OMI, GOME-2, IASI and AIRS

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Near-real-time images of SO2 and the aerosol index


Archives of volcanic SO2 and ash


The GOME-2 data products were generated under the auspices of EUMETSAT's ACSAF project (formerly called O3MSAF).

Additional information