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Proceedings Paper

Short-wave and mid-infrared imagery to distinguish silicate dusts and volcanic aerosols from meteorological clouds
Author(s): Naoko Iino; Kisei Kinoshita; Andrew Tupper; Toshiaki Yano
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Paper Abstract

Silicate dusts, volcanic ash clouds and Asian dust, are well detected by the 'split-window' method, which calculates the brightness temperature difference of the 11 and 12 μm bands. Volcanic plumes containing less ash are enhanced by the difference of the visible and near infrared bands of NOAA/AVHRR data. In order to supplement these difference images and improve the discrimination of volcanic ash- rich/poor plumes and of Asian dust from various meteorological clouds, various combinations of AVHRR imagery were investigated. It was found that the differences of the 3.7 and 11 μm bands and of the 1.6 μm and visible bands are useful to distinguish between thick clouds and dusts. Colour composite images containing the 1.6 or 3.7 μm bands are useful for distinguishing the objects from any meteorological clouds, because these bands are sensitive to droplet size.

Paper Details

Date Published: 30 December 2004
PDF: 9 pages
Proc. SPIE 5652, Passive Optical Remote Sensing of the Atmosphere and Clouds IV, (30 December 2004); doi: 10.1117/12.578636
Show Author Affiliations
Naoko Iino, Kagoshima Univ. (Japan)
Kisei Kinoshita, Kagoshima Univ. (Japan)
Andrew Tupper, Commonwealth Bureau of Meteorology (Australia)
Toshiaki Yano, Kagoshima Univ. (Japan)

Published in SPIE Proceedings Vol. 5652:
Passive Optical Remote Sensing of the Atmosphere and Clouds IV
Si Chee Tsay; Tatsuya Yokota; Myoung-Hwan Ahn, Editor(s)

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