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| Titel |
Sulphur dioxide as a volcanic ash proxy during the April–May 2010 eruption of Eyjafjallajökull Volcano, Iceland |
| VerfasserIn |
H. E. Thomas, A. J. Prata |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 14 ; Nr. 11, no. 14 (2011-07-18), S.6871-6880 |
| Datensatznummer |
250009920
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| Publikation (Nr.) |
 copernicus.org/acp-11-6871-2011.pdf |
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| Zusammenfassung |
| The volcanic ash cloud from the eruption of Eyjafjallajökull volcano in
April and May 2010 resulted in unprecedented disruption to air traffic in
Western Europe causing significant financial losses and highlighting the
importance of efficient volcanic cloud monitoring. The feasibility of using
SO2 as a tracer for the ash released during the eruption is
investigated here through comparison of ash retrievals from the Spinning
Enhanced Visible and Infrared Imager (SEVIRI) with SO2 measurements
from a number of infrared and ultraviolet satellite-based sensors. Results
demonstrate that the eruption can be divided into an initial ash-rich phase,
a lower intensity middle phase and a final phase where considerably greater
quantities both ash and SO2 were released. Comparisons of ash-SO2
dispersion indicate that despite frequent collocation of the two species,
there are a number of instances throughout the eruption where separation is
observed. This separation occurs vertically due to the more rapid settling
rate of ash compared to SO2, horizontally through wind shear and
temporally through volcanological controls on eruption style. The potential
for the two species to be dispersed independently has consequences in terms
of aircraft hazard mitigation and highlights the importance of monitoring
both species concurrently. |
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