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The harmattan
The harmattan is a type of wind that blows towards the coast of West Africa from the interior which is hot and dry. It could lasts for several months between November and march,wikipedia but due to seasonal changes it could be less like the one which occurred between the 20th December 2017 and 7th January 2018.
The harmattan is characterized by hot, dry air which is usually cold at dawn. it's season is the driest time in west Africa.
It also characterized by dusty wind which is called haze. This causes dust to settle on things around it. It also causes minor health issues like cold and catarrh and aggravated asthma.
All images used in this post were gotten from here
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