One factor which helps to account for the dryness of the Sahara desert is the

One factor which helps to account for the dryness of the Sahara desert is the persistence of a high-pressure belt over the area. The Sahara desert is the largest hot desert in the world, covering over 3.6 million square miles of northern Africa. The area is characterized by extreme aridity, and one of the factors responsible for this is the persistence of a high-pressure belt over the region. This high-pressure belt creates a sinking air motion which inhibits the formation of clouds and results in little or no rainfall in the area. While the height of the jet stream over the area can influence the climate of the region, it is not a significant factor in the dryness of the Sahara desert. The complete absence of vegetation over much of the area is a consequence of the harsh climate and not a contributing factor to the dryness of the area. Also, the impact of oil production by the countries of that region is not a significant factor in the dryness of the Sahara desert. Therefore, the persistence of a high-pressure belt over the area is one factor which helps to account for the dryness of the Sahara desert.