Global circulation influences the location of the world’s desert through the creation of winds which move from the region of high pressure to the regions of low pressure of dry air like in the deserts. This process brings about the heating up of the world's deserts.
Global circulation has to do with the movement of air from area of high pressure to the areas where pressure is low. This circulation leads to the desert and even to tropical rainforests.
In the process of global circulation, heat is actually transported over the surface of the earth. It is the transported heat that heats up the world's deserts.
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