At what latitude does the easterly jet stream blow over peninsular India during the summer months?

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Accepted Answer

Step 1: Identify types of upper air jets over India.

- There is a subtropical westerly jet (STWJ) which is found around $\sim30^\circ$N in the upper troposphere.
- There is a tropical easterly jet (TEJ) which develops in summer and is located much closer to the equator.

Step 2: Locate the tropical easterly jet (TEJ).

- The TEJ forms during the Indian summer monsoon (June–September) in the upper troposphere and is centered roughly between $10^\circ$N and $20^\circ$N.
- Over peninsular India the TEJ is typically near $\mathbf{14^\circ N}$ (about $14^\circ$N).

Conclusion: The easterly jet stream blowing over peninsular India in summer is at about $14^\circ$N, which corresponds to option (3) → c.

FINAL_ANSWER: c

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