Landscapes of West Africa: A Window on a Changing World is an atlas and unique dataset that uses time-series satellite image data and field-based photography to tell the story of wide-ranging land change across 17 countries. Sand dunes, which form in the direction of prevailing winds, make up about 20% of the entire desert landscape. Wind and water are the primary natural forces that shape desert landscapes. In some areas like Death Valley, annual rainfall is incredibly low, and water is scarce. This region of the U.S has the highest temperatures, and it’s dry throughout the year, with a short rainy season.
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