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Why does seasonal reversal of wind direction take place over the Indian sub-continent? |
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Answer» Why does seasonal reversal of wind direction take place over the Indian sub-continent? (i) During winter, there is a high-pressure area north of the Himalayas. Cold dry winds blow from this region to the low-pressure areas over the oceans to the south. (ii) In summer, a low-pressure area develops over interior Asia as well as over northwestern India. Air now starts moving from a high pressure area located over the Indian Ocean in the south to the low pressure area in the north. This causes a complete reversal of the direction of winds during summer. (iii) These winds blow over the warm oceans, gather moisture and bring widespread rainfall over the mainland of India. The western cyclonic disturbances experienced in the north and north-western parts of the country are brought in by this westerly flow. |
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