Characterisation of the Near-Field Eyjafjallajökull Volcanic Plume and its Long-range Influence

Lead Research Organisation: University of Oxford
Department Name: Oxford Physics

Abstract

The volcanic plume from the Eyjafjallajökull eruption has caused significant disruption to air transport across Europe. The regulatory response, ensuring aviation safety, depends on dispersion models. The accuracy of the dispersion predictions depend on the intensity of the eruption, on the model representation of the plume dynamics and the physical properties of the ash and gases in the plume. Better characterisation of these processes and properties will require improved understanding of the near-source plume region. This project will bring to bear observations and modelling in order to achieve more accurate and validated dispersion predictions. The investigation will seek to integrate the volcanological and atmospheric science methods in order to initiate a complete system model of the near-field atmospheric processes. This study will integrate new modelling and insights into the dynamics of the volcanic plume and its gravitational equilibration in the stratified atmosphere, effects of meteorological conditions, physical and chemical behaviour of ash particles and gases, physical and chemical in situ measurements, ground-based remote sensing and satellite remote sensing of the plume with very high resolution numerical computational modelling. When integrated with characterisations of the emissions themselves, the research will lead to enhanced predictive capability. The Eyjafjallajökull eruption has now paused. However, all three previous historical eruptions of Eyjafjallajökull were followed by eruptions of the much larger Katla volcano. At least two other volcanic systems in Iceland are 'primed' ready to erupt. This project will ensure that the science and organisational lessons learned from the April/May 2010 response to Eyjafjallajökull are translated fully into preparedness for a further eruption of any other volcano over the coming years. Overall, the project will (a) complete the analysis of atmospheric data from the April/May eruption, (b) prepare for future observations and forecasting and (c) make additional observations if there is another eruption during within the forthcoming few years.

Publications

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Grainger R (2013) Measuring volcanic plume and ash properties from space in Geological Society, London, Special Publications

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Sears T (2013) SO 2 as a possible proxy for volcanic ash in aviation hazard avoidance in Journal of Geophysical Research: Atmospheres

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Fromm M (2014) Correcting the record of volcanic stratospheric aerosol impact: Nabro and Sarychev Peak in Journal of Geophysical Research: Atmospheres

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Maria Elissavet Koukouli (2015) Intercomparison of Metop-A SO2 measure- ments during the 2010- 2011 Icelandic eruptions in Annals of Geophysics

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Vincent R (2015) Vertical level selection for temperature and trace gas profile retrievals using IASI in Atmospheric Measurement Techniques

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Ball J (2015) Measurements of the complex refractive index of volcanic ash at 450, 546.7, and 650 nm in Journal of Geophysical Research: Atmospheres

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Ventress L (2016) Retrieval of ash properties from IASI measurements in Atmospheric Measurement Techniques

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Reed B (2018) The Complex Refractive Index of Volcanic Ash Aerosol Retrieved From Spectral Mass Extinction in Journal of Geophysical Research: Atmospheres

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Taylor I (2018) Exploring the Utility of IASI for Monitoring Volcanic SO 2 Emissions in Journal of Geophysical Research: Atmospheres

 
Description They haven't our research is ongoing.
First Year Of Impact 2010
Sector Environment