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| Titel |
Support to Aviation Control Service (SACS): an online service for near-real-time satellite monitoring of volcanic plumes |
| VerfasserIn |
H. Brenot, N. Theys, L. Clarisse, J. van Geffen, J. van Gent, M. Van Roozendael, R. van der A, D. Hurtmans, P.-F. Coheur, C. Clerbaux, P. Valks, P. Hedelt, F. Prata, O. Rasson, K. Sievers, C. Zehner |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 14, no. 5 ; Nr. 14, no. 5 (2014-05-15), S.1099-1123 |
| Datensatznummer |
250118436
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| Publikation (Nr.) |
 copernicus.org/nhess-14-1099-2014.pdf |
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| Zusammenfassung |
| Volcanic eruptions emit plumes of ash and gases into the atmosphere,
potentially at very high altitudes. Ash-rich plumes are hazardous for
airplanes as ash is very abrasive and easily melts inside their engines. With
more than 50 active volcanoes per year and the ever-increasing number of
commercial flights, the safety of airplanes is a real concern. Satellite
measurements are ideal for monitoring global volcanic activity and, in
combination with atmospheric dispersion models, to track and forecast
volcanic plumes. Here we present the Support to Aviation Control Service
(SACS, http://sacs.aeronomie.be), which is a free online service
initiated by the European Space Agency (ESA) for the near-real-time (NRT) satellite monitoring of
volcanic plumes of SO2 and ash. It combines data from three ultraviolet (UV)-visible
and three infrared (IR) spectrometers.
The UV-vis sensors are the Ozone Monitoring Instrument (OMI) and
the Global Ozone Monitoring Experiment-2 (GOME-2) on-board
the two polar orbiting meteorological satellites (MetOp-A & MetOp-B)
operated by the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT).
The IR sensors are the Atmospheric InfraRed Sounder (AIRS) and
the Infrared Atmospheric Sounding Interferometer (IASI) on-board MetOp-A & MetOp-B.
This new multi-sensor warning system of
volcanic emissions is based on the selective detection of SO2 and ash.
This system is optimised to avoid false alerts while at the same time
limiting the number of notifications in case of large plumes. A successful
rate with more than 95% of notifications corresponding to true volcanic
activity is obtained by the SACS system. |
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