Eissa, Yehia; Ghedira, Hosni; Ouarda, Taha B. M. J.; Chiesa, Matteo
(2012).
Dust detection over bright surfaces using high-resolution visible SEVIRI images.
In: IEEE International Geoscience and Remote Sensing Symposium - IGARSS 2012, 22-27 juillet 2012, Munich, Allemagne.
Résumé
Reflectance observations from the high-resolution visible
(HRV) channel of the SEVIRI instrument, onboard Meteosat
Second Generation, have shown to be sensitive to dust over
bright surfaces, i.e. bright desert sand. This was observed
when deriving the cloud index from the HRV channel for
dusty days over the desert environment of the United Arab
Emirates (UAE). Sensitivity of the HRV channel to dust
could then be used to derive an index giving an indication of
the dust conditions in the atmosphere. Therefore, the
purpose of this paper is to propose an index, the interception
index, for dust detection over bright desert surfaces in the
UAE using the HRV SEVIRI channel. The ability of the
interception index to estimate the direct normal irradiance is
also investigated.
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