Monitoring of volcanic SO2 emissions using the GOME-2 satellite instrument

M. Rix, P. Valks, N. Hao, T. Erbertseder and J. van Geffen, 2008:
in: Proceedings of the 2008 second workshop on USE of Remote Sensing Techniques
for Monitoring Volcanoes and Seismogenic Areas
USEReST 2008, 11--14 Nov. 2008, Naples, Italy, IEEE publication.


Atmospheric sulfur dioxide is an important indicator of volcanic activity. Space based atmospheric sensors like GOME-2 on MetOp and OMI on EOS-Aura make it possible to detect the emissions of volcanic SO2 and monitor volcanic activity and eruptions on a global scale. With GOME-2, it is possible to detect and track volcanic eruption plumes and SO2 from passive degassing in near-real time (NRT). This is particularly important for early warning services, as increases in SO2 fluxes are an indicator for new episodes of volcanic unrest. The SO2 daily measurements from space are used for several early warning services related volcanic risk (Exupéry, GlobVolcano) and for aviation warning purposes (GSE-PROMOTE).


   1. Introduction
   2. Retrieval of volcanic SO2
   3. Case studies
      3.1  Volcanic eruption: Kasatochi, August 2008
      3.2  Passively degassing volcanoes:
           Papua New Guinea / Vanuatu
   4. Applications in volcanic early warning systems
   5. Concluding remarks

PDF file of the paper (5 pages; 425 kB)

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created: 17 November 2008
last modified: 31 August 2009