| Consider the following statements. |
| 1. The winds which blow between \[30{}^\circ N\] and \[60{}^\circ S\] latitudes throughout the year are known as westerlies. |
| 2. The moist air masses that cause winter rains in North- western region of India are part of westerlies. |
| Which of the statements) given above is/am correct? |
A) Only1
B) Only 2
C) Both 1 and 2
D) Neither1nor2
Correct Answer: B
Solution :
Exp. [b] The Trade winds blow from the sub-tropical high towards the equatorial low (35°N to 0° and 35°S to 0°). They blow from a North-Easterly direction in the Northern hemisphere and from a South-Easterly direction in Southern hemisphere. The westerlies comprise the airflow from the sub-tropical highs to the temperate lows (from about \[35{}^\circ N\] to \[60{}^\circ N\]and \[35{}^\circ S\] to\[60{}^\circ S\]). In the Southern hemisphere where there is continuous open ocean from \[40{}^\circ S\]to\[60{}^\circ S\], the westerlies blow with severity and are known roaring forties, furious fifties and shrieking sixties. Western disturbance is the term used to describe an extra-tropical storm that brings sudden winter rain and snow to the North-Western parts of the Indian sub-continent. This is a non-monsoonal precipitation pattern driven by the westerlies. The moisture in these storms usually originates over the Mediterranean sea and the Atlantic ocean. Hence, option [b] is correct.
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