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| Titel |
Satellite Monitoring of Ash and Sulphur Dioxide for the mitigation of Aviation Hazards: Part I. Validation of satellite-derived Volcanic Ash Levels. |
| VerfasserIn |
MariLiza Koukouli, Dimitris Balis, Spiros Simopoulos, Nikos Siomos, Lieven Clarisse, Elisa Carboni, Ping Wang, Richard Siddans, Franco Marenco, Lucia Mona, Gelsomina Pappalardo, Claudia Spinetti, Nicolas Theys, Lucia Tampellini, Claus Zehner |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250096022
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| Publikation (Nr.) |
 EGU/EGU2014-11502.pdf |
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| Zusammenfassung |
| The 2010 eruption of the Icelandic volcano Eyjafjallajökull attracted the attention of the
public and the scientific community to the vulnerability of the European airspace to volcanic
eruptions. Major disruptions in European air traffic were observed for several weeks
surrounding the two eruptive episodes, which had a strong impact on the everyday life of
many Europeans as well as a noticable economic loss of around 2-3 billion Euros in total. The
eruptions made obvious that the decision-making bodies were not informed properly and
timely about the commercial aircraft capabilities to ash-leaden air, and that the ash
monitoring and prediction potential is rather limited. After the Eyjafjallajökull eruptions new
guidelines for aviation, changing from zero tolerance to newly established ash threshold
values, were introduced.
Within this spirit, the European Space Agency project Satellite Monitoring of Ash and
Sulphur Dioxide for the mitigation of Aviation Hazards, called for the creation of an
optimal End-to-End System for Volcanic Ash Plume Monitoring and Prediction . This
system is based on improved and dedicated satellite-derived ash plume and sulphur
dioxide level assessments, as well as an extensive validation using auxiliary satellite,
aircraft and ground-based measurements. The validation of volcanic ash levels
extracted from the sensors GOME-2/MetopA, IASI/MetopA and MODIS/Terra and
MODIS/Aqua is presented in this work with emphasis on the ash plume height
and ash optical depth levels. Co-located aircraft flights, Cloud-Aerosol Lidar and
Infrared Pathfinder Satellite Observation [CALIPSO] soundings and well as European
Aerosol Research Lidar Network [EARLINET] measurements were compared to
the different satellite estimates for the those two eruptive episodes. The validation
results are extremely promising with most satellite sensors performing quite well
and within the estimated uncertainties compared to the comparative datasets. The
findings are extensively presented here and future directions discussed in length. |
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