Topic– Part of static series under the heading – “Jet streams and Indian monsoons”
1) Explain the influence of jet streams on South West Monsoon in India?(250 words)
Key demand of the question
The question expects us to bring out what jet streams are and the impact different jet streams have on South west monsoons in India.
Structure of the answer
Introduction – Explain what jet streams are.
Body – Discuss how Subtropical westerly jet stream, tropical easterly jet stream and Somalia low level jet stream impact monsoons in India.
- Subtropical westerly jet stream – responsible for the onset of monsoon. Explain how
- Tropical westerly jet stream – This jet stream is oriented along the Kolkata-Bangalore axis in that direction. It controls the spread of the South West Monsoon. When it is strong, it opposes the spread of the South West monsoon and when it is weak, it allows the spread of South West monsoon
- Somalia low level jet stream – When it is weak, it results in formation of a monsoonal break called the “lull” in the monsoon and when it is strong, the monsoon will also be strong.