Deserts are found in both subtropical latitudes and middle latitudes. Subtropical deserts form in areas of high pressure that stretch worldwide as a part of global atmospheric circulation. In this band of latitude, dry air descends from high in the atmosphere. They often have the appearance that you would expect of a desert with clear skies, sunshine, and very dry conditions. Middle latitude deserts form in the interiors of continents, far from the ocean or other sources of moisture and anywhere land is cut off from sources of moisture. Not all deserts are the same. Refer to the map below, and sort the desert features by the type of desert in which they are most common.