Two-thirds of the total SDEs belong to Type-1, which is a similar synoptic situation to that mentioned by Barkan et al. (2005) concerning Saharan dust transport towards Italy. In this case, a deep, well-developed trough emanated from the Bay of Biscay to the Atlantic coast of Africa, and the eastern cell of the divided subtropical high over North Africa causes the strong southwestern flow. The composite mean 700 mb geopotential height and wind flow maps of the identified Type-1 SDEs represent this situation in detail. The dust particles penetrate from North Africa into the atmosphere of the CB by strong SW flow across the western or central basin of the Mediterranean Sea.
Type-1 synoptic pattern favours to northeastward dust transport from the NW Sahara across the western basin of the Mediterranean Sea.
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