Editing Rain shadow (section)

====Northern Africa====
[[File:Algeria.A2002118.1040.250m.jpg|thumb|right|230px|The [[Atlas Mountains]]' (top) rain shadow effect makes the [[Sahara]] even drier.]]
* The [[Sahara]] is made even drier because of a strong rain shadow effects caused by major mountain ranges (whose highest points can culminate up to more than 4,000 meters; 2½ miles high). To the northwest, the [[Atlas Mountains]], covering the [[Mediterranean]] coast for [[Morocco]], [[Algeria]] and [[Tunisia]]. On the [[windward]] side of the [[Atlas Mountains]], the warm, moist winds blowing from the northwest off the [[Atlantic Ocean]], which contain a lot of water vapor, are forced to rise, lift up and expand over the mountain range. This causes them to cool down, which causes an excess of moisture to condense into high clouds and results in heavy precipitation over the mountain range. This is known as [[orographic rainfall]] and after this process, the air is dry because it has lost most of its moisture over the [[Atlas Mountains]]. On the [[leeward]] side, the cold, dry air starts to descend and to sink and compress, making the winds warm up. This warming causes the moisture to evaporate, making clouds disappear. This prevents rainfall formation and creates desert conditions in the Sahara. 
* Desert regions in the [[Horn of Africa]] ([[Ethiopia]], [[Eritrea]], [[Somalia]] and [[Djibouti]]) such as the [[Danakil Desert]] are all influenced by the air heating and drying produced by rain shadow effect of the [[Ethiopian Highlands]].