Which among the following factor is are responsible for the southwest monsoon 1 Sun shines verticall...........

Geography Monsoons and Climate in India

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Which among the following factor is/are responsible for the southwest monsoon:

1. Sun shines vertically overs the tropic of cancer.

2. Formation of low pressure in the northwestern part of subcontinent.

3. Northward shifting in the position of the intertropical convergence zone (ITCZ).

Select the correct answer using the code given below:

1 and 2

2 and 3

1 and 3

1, 2 and 3

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Explanation:

The southwest summer monsoon a four-month period when massive convective thunderstorms dominate India's weather is Earth's most productive wet season. A product of southeast trade winds originating from a high-pressure mass centred over the southern Indian Ocean the monsoonal torrents supply over 80% of India's annual rainfall. Attracted by a low-pressure region centred over South Asia, the mass spawns surface winds that ferry humid air into India from the southwest. These inflows ultimately result from a northward shift of the local jet stream which itself results from rising summer temperatures over Tibet and the Indian subcontinent.