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• W3189604703 endingPage "3112" @default.
• W3189604703 startingPage "3112" @default.
• W3189604703 abstract "Volcanic ash clouds are a threat to air traffic security and, thus, can have significant societal and financial impact. Therefore, the detection and monitoring of volcanic ash clouds to enhance the safety of air traffic is of central importance. This work presents the development of the new retrieval algorithm VACOS (Volcanic Ash Cloud properties Obtained from SEVIRI) which is based on artificial neural networks, the thermal channels of the geostationary sensor MSG/SEVIRI and auxiliary data from a numerical weather prediction model. It derives a pixel classification as well as cloud top height, effective particle radius and, indirectly, the mass column concentration of volcanic ash clouds during day and night. A large set of realistic one-dimensional radiative transfer calculations for typical atmospheric conditions with and without generic volcanic ash clouds is performed to create the training dataset. The atmospheric states are derived from ECMWF data to cover the typical diurnal, annual and interannual variability. The dependence of the surface emissivity on surface type and viewing zenith angle is considered. An extensive dataset of volcanic ash optical properties is used, derived for a wide range of microphysical properties and refractive indices of various petrological compositions, including different silica contents and glass-to-crystal ratios; this constitutes a major innovation of this retrieval. The resulting ash-free radiative transfer calculations at a specific time compare well with corresponding SEVIRI measurements, considering the individual pixel deviations as well as the overall brightness temperature distributions. Atmospheric gas profiles and sea surface emissivities are reproduced with a high agreement, whereas cloudy cases can show large deviations on a single pixel basis (with 95th percentiles of the absolute deviations > 30 K), mostly due to different cloud properties in model and reality. Land surfaces lead to large deviations for both the single pixel comparison (with median absolute deviations > 3 K) and more importantly the brightness temperature distributions, most likely due to imprecise skin temperatures. The new method enables volcanic ash-related scientific investigations as well as aviation security-related applications." @default.
• W3189604703 created "2021-08-16" @default.
• W3189604703 creator A5005515350 @default.
• W3189604703 creator A5005899432 @default.
• W3189604703 creator A5054607154 @default.
• W3189604703 creator A5056840259 @default.
• W3189604703 creator A5061928992 @default.
• W3189604703 date "2021-08-06" @default.
• W3189604703 modified "2023-10-01" @default.
• W3189604703 title "The New Volcanic Ash Satellite Retrieval VACOS Using MSG/SEVIRI and Artificial Neural Networks: 1. Development" @default.
• W3189604703 cites W1496340422 @default.
• W3189604703 cites W1534207702 @default.
• W3189604703 cites W1560425405 @default.
• W3189604703 cites W1576278180 @default.
• W3189604703 cites W1703396217 @default.
• W3189604703 cites W1804424319 @default.
• W3189604703 cites W1822557503 @default.
• W3189604703 cites W1830081507 @default.
• W3189604703 cites W1843339709 @default.
• W3189604703 cites W1954979484 @default.
• W3189604703 cites W1968151054 @default.
• W3189604703 cites W1970313160 @default.
• W3189604703 cites W1976112978 @default.
• W3189604703 cites W1977177161 @default.
• W3189604703 cites W1980114242 @default.
• W3189604703 cites W1980514833 @default.
• W3189604703 cites W1981425722 @default.
• W3189604703 cites W1981601556 @default.
• W3189604703 cites W1985929788 @default.
• W3189604703 cites W1986446927 @default.
• W3189604703 cites W1997632316 @default.
• W3189604703 cites W2000368552 @default.
• W3189604703 cites W2002553792 @default.
• W3189604703 cites W2005654673 @default.
• W3189604703 cites W2007425069 @default.
• W3189604703 cites W2008594480 @default.
• W3189604703 cites W2011478983 @default.
• W3189604703 cites W2022330856 @default.
• W3189604703 cites W2035499129 @default.
• W3189604703 cites W2038963893 @default.
• W3189604703 cites W2039878031 @default.
• W3189604703 cites W2040073534 @default.
• W3189604703 cites W2040106381 @default.
• W3189604703 cites W2040543587 @default.
• W3189604703 cites W2041472876 @default.
• W3189604703 cites W2042541806 @default.
• W3189604703 cites W2049891650 @default.
• W3189604703 cites W2051654927 @default.
• W3189604703 cites W2053285099 @default.
• W3189604703 cites W2053870625 @default.
• W3189604703 cites W2053947701 @default.
• W3189604703 cites W2056055924 @default.
• W3189604703 cites W2059072765 @default.
• W3189604703 cites W2060606271 @default.
• W3189604703 cites W2062840750 @default.
• W3189604703 cites W2066291193 @default.
• W3189604703 cites W2068421530 @default.
• W3189604703 cites W2069889730 @default.
• W3189604703 cites W2070259289 @default.
• W3189604703 cites W2072458950 @default.
• W3189604703 cites W2073431126 @default.
• W3189604703 cites W2073842311 @default.
• W3189604703 cites W2074769079 @default.
• W3189604703 cites W2083585005 @default.
• W3189604703 cites W2084547407 @default.
• W3189604703 cites W2090144134 @default.
• W3189604703 cites W2093528815 @default.
• W3189604703 cites W2093575782 @default.
• W3189604703 cites W2101947068 @default.
• W3189604703 cites W2103721688 @default.
• W3189604703 cites W2105788403 @default.
• W3189604703 cites W2106515163 @default.
• W3189604703 cites W2109690439 @default.
• W3189604703 cites W2117585998 @default.
• W3189604703 cites W2120916999 @default.
• W3189604703 cites W2121099191 @default.
• W3189604703 cites W2123104236 @default.
• W3189604703 cites W2130440624 @default.
• W3189604703 cites W2136943947 @default.
• W3189604703 cites W2137243858 @default.
• W3189604703 cites W2137983211 @default.
• W3189604703 cites W2138074350 @default.
• W3189604703 cites W2140192895 @default.
• W3189604703 cites W2140310004 @default.
• W3189604703 cites W2142373103 @default.
• W3189604703 cites W2144991971 @default.
• W3189604703 cites W2149910605 @default.
• W3189604703 cites W2150027424 @default.
• W3189604703 cites W2152093384 @default.
• W3189604703 cites W2158670705 @default.
• W3189604703 cites W2159291134 @default.
• W3189604703 cites W2161669521 @default.
• W3189604703 cites W2165207609 @default.
• W3189604703 cites W2166146810 @default.
• W3189604703 cites W2170744622 @default.
• W3189604703 cites W2171399540 @default.
• W3189604703 cites W2172486268 @default.
• W3189604703 cites W2174648383 @default.

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