Explain the meaning of ‘onset’ and ‘withdrawal’ of the Indian monsoon.

Solution

Onset of Monsoon : Due to the rapid rise in temperature in May over north-west India the air pressure decreases and the low pressure is established there. To fill up this area of low pressure, the air is suck in from the Arabian Sea and Bay of Bengal. The south-east trade winds of the Southern Hemisphere also join the air circulation over India as the south westerly winds. The south west monsoon strikes on the coast of Kerala in the first week of June and slowly it extends northwards. It is the onset of monsoon.

Withdrawal of Monsoon : By the end of September the south-west monsoon becomes weak as the low pressure trough shifts southward. By the beginning of October the low pressure centres over northern parts move over the Bay of Bengal and by early November it moves over Karnataka and Tamil Nadu. By the middle of December the centres of low pressure is completely removed from the peninsula. It is the withdrawal of monsoon.

Some More Questions From Climate Chapter

The appearance of warm ocean current recurring every 5-8 years or so in E. Pacific off South America is called El Nino. It warms the nutrient-rich waters along the coasts of Equador and Peru and is an important factor in global weather.

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Climate

Explain the meaning of ‘onset’ and ‘withdrawal’ of the Indian monsoon.

Some More Questions From Climate Chapter

Explain EI-Nino with its implication.

State the three main reasons for the excessive cold in north India during winters.

Why does winter monsoons do not cause rainfall ?

Why Tamil Nadu coast remains dry during summer? State two factors:

Explain the characteristics of monsoonal rainfall in India.

The appearance of warm ocean current recurring every 5-8 years or so in E. Pacific off South America is called El Nino. It warms the nutrient-rich waters along the coasts of Equador and Peru and is an important factor in global weather.

What is Monsoon?

Which two factors contribute to the development of the Indian monsoon?

Mention two main seasons of the Indian climate.

Write two transitional seasons of India and their months.

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