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What is the main atmospheric basis of increased humidity during monsoon rainfall?

Answer and explanation

Correct answer: Arrival of water vapour through sea winds

Humidity means the amount of water vapour present in the air. During the Indian monsoon, winds generally travel from the surrounding seas toward the land. While crossing the sea, these winds collect a large amount of water vapour. When the moist air reaches land and rises or cools, clouds can form and rainfall becomes more likely.

Dry land winds would not supply the needed moisture, and the other two statements are not meaningful atmospheric explanations. The arrival of water vapour through sea winds directly explains why monsoon air feels damp and why it can produce rain. Therefore, option A is correct. The process also shows why the sea is an important source of monsoon moisture.

Related tags

ClimateHumidityMarine-Moisture

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