Topic: Indian Monsoons
Q1. Describe the mechanism of the Indian monsoon system. How do global phenomena such as the El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) influence its dynamics? (15 M)
Difficulty Level: Easy
Reference: InsightsIAS
Why the question
The Indian monsoon remains central to India’s agriculture and economy, and its variability is strongly influenced by global climatic phenomena like ENSO and IOD.Key demand of the question
The question demands explanation of the mechanism of the Indian monsoon system and an assessment of how the El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) influence its performance.Structure of the Answer
Introduction
Briefly highlight the importance of monsoon for India’s economy and society, giving it global climatic significance.
Body
- Mechanism of Indian monsoon system – Differential heating, ITCZ, cross-equatorial flow, orographic uplift, monsoon trough.
- Influence of ENSO – Impact of El Niño, La Niña, ENSO diversity (e.g., Modoki), lag effects.
- Influence of IOD – Positive and negative phases, interaction with ENSO, long-term climate trends.
Conclusion
Summarize the complexity of monsoon teleconnections and suggest strengthening forecasting and resilience measures.
