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Retrieval of volcanic ash height from satellite-based infrared measurements
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2017
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Source: Journal of Geophysical Research: Atmospheres, 122(10), 5364-5379
[PDF-1.74 MB]
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Journal Title:Journal of Geophysical Research: Atmospheres
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Description:A new algorithm for retrieving volcanic ash cloud height from satellite-based measurements is presented. This algorithm, which was developed in preparation for China ’s next-generation meteorological satellite (FY-4), is based on volcanic ash microphysical property simulation and statistical optimal estimationtheory. The MSG satellite ’s main payload, a 12-channel Spinning Enhanced Visible and Infrared Imager, was used as proxy data to test this new algorithm. A series of eruptions of Iceland ’s Eyjafjallajökull volcano during April to May 2010 and the Puyehue-Cordón Caulle volcanic complex eruption in the Chilean Andeson 16 June 2011 were selected as two typical cases for evaluating the algorithm under various meteorological backgrounds. Independent volcanic ash simulation training samples and satellite-based Cloud-Aerosol Lidar with Orthogonal Polarization data were used as validation data. It is demonstrated that the statisticallybased volcanic ash height algorithm is able to rapidly retrieve volcanic ash heights, globally. The retrieved ash
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Source:Journal of Geophysical Research: Atmospheres, 122(10), 5364-5379
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ISSN:2169-897X
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