What are the alternating winds that determined rainy seasons in Africa and Asia called?

What are the alternating winds that determined rainy seasons in Africa and Asia called?

• A. Monsoons
• B. Trade winds
• C. Westerlies
• D. Doldrums

Answer: (A)

Monsoons are seasonal winds that reverse direction with the seasons, bringing a distinct wet season when moist air rises over land and heavy rains, and a dry season when the winds reverse and carry dry air away from the land. In Africa and Asia, the summer monsoon brings moist air from oceans toward the land, producing the main rainy season, while the winter monsoon reverses the flow, leading to a drier period. This pattern is tied to the differential heating of land and sea and the seasonal migration of the ITCZ and monsoon trough that shift with the seasons. Other options don’t fit because trade winds are persistent easterlies without a regular seasonal reversal, westerlies are mid-latitude winds, and doldrums are near-equatorial zones of light winds—none of which produce the pronounced, seasonal rainfall pattern seen with monsoons.

Monsoons are seasonal winds that reverse direction with the seasons, bringing a distinct wet season when moist air rises over land and heavy rains, and a dry season when the winds reverse and carry dry air away from the land. In Africa and Asia, the summer monsoon brings moist air from oceans toward the land, producing the main rainy season, while the winter monsoon reverses the flow, leading to a drier period. This pattern is tied to the differential heating of land and sea and the seasonal migration of the ITCZ and monsoon trough that shift with the seasons. Other options don’t fit because trade winds are persistent easterlies without a regular seasonal reversal, westerlies are mid-latitude winds, and doldrums are near-equatorial zones of light winds—none of which produce the pronounced, seasonal rainfall pattern seen with monsoons.