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- Title
Comparing Two Independent Satellite-Based Algorithms for Detecting and Tracking Ash Clouds by Using SEVIRI Sensor.
- Authors
Falconieri, Alfredo; Cooke, Michael C.; Filizzola, Carolina; Marchese, Francesco; Pergola, Nicola; Tramutoli, Valerio
- Abstract
The Eyjafjallajökull (Iceland) volcanic eruption of April–May 2010 caused unprecedented air-traffic disruption in Northern Europe, revealing some important weaknesses of current operational ash-monitoring and forecasting systems and encouraging the improvement of methods and procedures for supporting the activities of Volcanic Ash Advisory Centers (VAACs) better. In this work, we compare two established satellite-based algorithms for ash detection, namely RSTASH and the operational London VAAC method, both exploiting sensor data of the spinning enhanced visible and infrared imager (SEVIRI). We analyze similarities and differences in the identification of ash clouds during the different phases of the Eyjafjallajökull eruption. The work reveals, in some cases, a certain complementary behavior of the two techniques, whose combination might improve the identification of ash-affected areas in specific conditions. This is indicated by the quantitative comparison of the merged SEVIRI ash product, achieved integrating outputs of the RSTASH and London VAAC methods, with independent atmospheric infrared sounder (AIRS) DDA (dust-detection algorithm) observations.
- Subjects
EYJAFJALLAJOKULL Volcano (Iceland); VOLCANIC ash clouds; VOLCANIC eruptions; INFRARED imaging equipment; AIR traffic
- Publication
Sensors (14248220), 2018, Vol 18, Issue 2, p369
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s18020369