Which meteorological phenomenon is responsible for the dry, dusty haze that covers Nigeria between November and March each year?
Answer and explanation
Correct answer: D. the Harmattan wind carried by the Northeast Trade winds
- Step 1: Between November and March, the Inter-Tropical Discontinuity (ITD) moves south, allowing dry continental air to dominate. Step 2. The Harmattan wind blows dust particles from the Bodélé Depression in Chad across Nigeria, lowering visibility and humidity. Answer: the Harmattan wind carried by the Northeast Trade winds. Why not the others: South-West Monsoon brings moist maritime rainfall; Benguela Current is off southwestern Africa; Sirocco blows toward southern Europe.
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