| Consider the following statements about Harmattan Wind. |
| 1. It is a dry and dusty West African trade wind. |
| 2. It blows South from the Sahara into the Gulf of Guinea between the end of November and the middle of |
| March (winter). |
| 3. The interaction of the Harmattan with monsoon winds can cause tornadoes. |
| 4. It can result in spontaneous nosebleeding for some. |
| Which of the statement(s) given above is/are correct? |
A) Only 1
B) 1 and 2
C) 2 and 3
D) All of these
Correct Answer: D
Solution :
[d] The Harmattan is a dry and dusty West African trade wind. It is cool, extremely dry wind that forms over the Sahara and blows westward or South-Westward to the African coast It blows South from the Sahara into the Gulf of Guinea between the end of November and the middle of March (winter). The temperatures can be as low as The name comes from is related to an Akan cognate. On its passage over the desert it picks up fine dust particles (between 0.5 and 10 mm In some countries in West Africa, the heavy amount of dust the air can severely limit visibility and block the Sun for severa days, comparable to a heavy fog. It can even break the trunk of the pine trees, growing in that region, through their dryness. The effect caused by the dust and sand stirred by these winds is known as the Harmattan haze, which costs airline millions of dollars in cancelled and diverted flights each year and risks public health by increasing meningitis cases. The interaction of the Harmattan with monsoon winds can cause tornadoes. Humidity drops to as low as 15% and can result is pontaneous nosebleeding for some. The wind can cause severe crop damage.
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