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The 'Harmattan' is a dry and dusty wind blowing south off the Sahara into the Gulf of Guinea between November and March (winter). It is considered a Natural Hazard.
On its passage over the desert it picks up fine dust particles (between 0.5 and 10 micrometres). When the Harmattan blows hard, it can push dust and sand all the way to South America. In some countries in West Africa, the heavy amount of dust in the air can severely limit visibility and block the sun for several days, comparable to a heavy fog. The effect caused by the dust and sand stirred by these winds is known as the Harmattan Haze, and costs airlines millions in cancelled and diverted flights each year. In Niger, people say that men and animals become increasingly irritable when this wind has been blowing for a while, giving it a bad reputation. However, the cool wind brings relief from the oppressive heat, which is why the Harmattan has earned the nickname "The Doctor".

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See also

Sources

See also

★ Khamaseen

★ Prevailing winds

Sources

Clara Ikekeonwu, The phonetics of Nigerian languages / München : Lincom Europa, 2007, p.62.