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        Measurements of desert dust optical characteristics at Porte au Sahara during SAMUM

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        Author
        Von Hoyningen-Huene, W.
        Dinter, T.
        Kokhanovsky, A. A.
        Burrows, J. P.
        Wendisch, M.
        Bierwirth, E.
        Mueller, D.
        Diouri, M.
        Attention
        2299/12323
        Abstract
        Main optical characteristics of desert dust, such as phase function and single scattering albedo, have been derived from combinations of sun-/sky-radiometer and satellite measurements during the SAMUM experiment (10 May-10 June 2006) at the site Porte au Sahara (30.237 degrees N, 5.607 degrees W) in South Morocco. Scattering phase functions have been retrieved using combined data of spectral aerosol optical thickness (AOT) and spectral sky brightness in the almucantar, considering non-spherical light scattering. Intercomparisons of modelled top-of-atmosphere (TOA) reflectance with satellite observations of the Medium Resolution Imaging Spectrometer (MERIS) and Scanning Imaging Absorption Spectrometer for Atmospheric Chartography () instrument have been used for the estimation of spectral single scattering albedo. For the radiative transfer calculations scattering phase functions and AOT from ground-based observations have been used. The spectral single scattering albedo ranges from 0.93 in the blue to 0.98 at 753 nm.
        Publication date
        2009-02
        Published in
        Tellus Series B-Chemical and Physical Meteorology
        Published version
        https://doi.org/10.1111/j.1600-0889.2008.00405.x
        Other links
        http://hdl.handle.net/2299/12323
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