Question

explain the arrival and departure of monsoon

Answer 1

1. The Monsoon are not steady winds. They are pulsating in nature.

2. The duration of the monsoon is between 100- 120 days from early June to mid-September.

3. During the on-set of monsoons there is an increase in rainfall. This increase in rainfall is known as the ‘burst’ of the monsoon. 
 

4. The monsoon arrives at the southern tip of the Indian peninsula usually by the first week of June.

Then the monsoon get divided into two:- 
 

(i) the Arabian Sea branch
 

(ii) the Bay of Bengal branch 

5. The Arabian Sea branch reaches Mumbai approximately ten days after the on-set.
 

6. By mid-June the Arabian Sea branch of the monsoon arrives over Saurashtra-Kuchchh and the central part of the country 
 

7. The Bay of Bengal branch advances rapidly and arrives in Assam in the first week of June. 
 

8. The lofty mountains causes the monsoon winds to deflect towards the west over the Ganga plains. 
 

9. The Arabian Sea and the Bay of Bengal branches of the monsoon merge over the north western part of the Ganga plains. 
 

10. Delhi generally receives the monsoon showers from the Bay of Bengal branch by the end of June. 
 

11. By the first week of July, western Uttar Pradesh, Punjab, Haryana and eastern Rajasthan experience the monsoon. 
 

12. By mid-July, the monsoon reaches Himachal Pradesh and the rest of the country. 

Answer 2

The arrival of monsoon:

June 1 is observed as the date of onset of the monsoon in India, as directed by the arrival of the monsoon in the southernmost region of Kerala. The monsoon interprets for nearly 80% of the rainfall in India.

The departure of monsoon:

September is regarded as the departure of monsoon all over India. It is regarded as an offset of monsoon.

Hope it helped...