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Easterly Jet stream over the Indian Peninsular Region is observed during the :

  • A.Winter season
  • B.Pre-Monsoon season
  • C.South-west Monsoon season
  • D.Post-Monsoon season

Answer: C

The easterly jet stream over peninsular India is observed during the south-west monsoon season.

The Tropical Easterly Jet develops in the upper troposphere, at about 100 to 150 hPa, over south Asia during June to September. It results from the strong temperature contrast between the heated Tibetan Plateau and the Indian Ocean, and it is closely linked with the strength of the monsoon.

In winter and before the monsoon, the dominant upper-level flow over north India is the subtropical westerly jet. The easterly jet weakens and withdraws with the monsoon in the post-monsoon season.

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