Q. Consider the following statements regarding winter season weather mechanisms in India:
1. The southern branch of the jet stream, flowing south of the Himalayas, significantly influences the winter weather in India.
2. Western cyclonic disturbances, which affect northern India in winter, originate over the Caspian Sea and are carried by the easterly jet stream.
Which of the statements given above is/are correct?
Quarterly-SFG-Jan-to-March
Red Book

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: A
Notes:

Explanation:

  • The southern branch of the jet stream, which flows south of the Himalayas, plays an important role in influencing winter weather in India, especially by steering western disturbances into the subcontinent.
  • Western cyclonic disturbances originate over the Mediterranean Sea, not the Caspian Sea, and they are brought into India by the westerly jet stream, not easterly.

Source: India Physical Environment (Class 11th NCERT)

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