Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53501#.VMci7SzQrzE Author(s) Pinhas Alpert , Joseph Barkan Affiliation(s) Department of Geosciences, Tel-Aviv University, Tel-Aviv, Israel . ABSTRACT The distribution of mineral dust around topographical obstacles is examined, employing the dimensionless Froude number that describes different flow regimes in a fluid. Flow around a peak with a near-circular shape in a dusty environment like the Sahara and the Sahel was examined in order to investigate the distribution of the dust around the obstacle. The Total Ozone Mapping Spectrometer Aerosol Index (TOMS-AI) daily Aerosol Index, the u and v wind components and the temperature, were used for the period 1979-1992, i.e . 14 years. It is found by the AI data that the shape of the dust distribution around the circular peak is in good agreement with the shape of the peak itself. Additionally goo...
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