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Volcanic emissions monitoring

European Space Agency


page last modified:
21 May 2024
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 multiple satellite instruments: TROPOMI, OMPS, OMI, GOME-2, IASI and AIRS

go to SACS
Near-real-time images of SO2 and the aerosol index

This NRT data service is part of the Support to Aviation Control Service (SACS), which is hosted by BIRA-IASB, Brussels, Belgium.


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