Complex sentence: When the air that has been heated on the extensive central plateau flows down the escarpment to the coast it undergoes further heating by adiabatic processes, accounting for the Berg winds'hot and dry properties, wherever they occur along South Africa's coastline.
Split into simpler sentences: When the air that has been heated on the extensive central plateau flows down the escarpment to the coast it undergoes further warming by adiabatic processes. This accounts for the hot and dry properties of these off-shore winds, wherever they occur along South Africa's coastline.