Analyse the role of monsoon troughs, western disturbances, and tropical depressions in shaping India’s rainfall pattern. How does their interaction determine the occurrence of extreme weather events?
Kartavya Desk Staff
Topic: Changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes.
Topic: Changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes.
Q2. Analyse the role of monsoon troughs, western disturbances, and tropical depressions in shaping India’s rainfall pattern. How does their interaction determine the occurrence of extreme weather events? (15 M)
Difficulty Level: Medium
Reference: TH
Why the question: Dynamic systems influencing India’s monsoon rainfall, and assess conceptual clarity on how monsoon troughs, tropical depressions, and western disturbances interact to cause spatial rainfall variation and extreme weather events. Key demand of the question: Explain the distinct roles of the three synoptic systems in shaping rainfall distribution across India and analyse how their interaction leads to extreme weather phenomena such as floods, cloudbursts, and landslides. Structure of the Answer: Introduction: Briefly define the Indian monsoon as a complex system influenced by tropical and extratropical circulations. Body: Explain the role of monsoon troughs in organizing low-pressure zones and controlling rainfall distribution. Describe how tropical depressions from the Bay of Bengal contribute to monsoon intensity and temporal variability. Discuss the influence of western disturbances in modulating rainfall over north and northwest India. Analyse how the interaction among these systems triggers extreme rainfall events and their regional impacts. Conclusion: Conclude with a note on the need for improved forecasting and climate-adaptive strategies to mitigate extreme monsoon impacts.
Why the question: Dynamic systems influencing India’s monsoon rainfall, and assess conceptual clarity on how monsoon troughs, tropical depressions, and western disturbances interact to cause spatial rainfall variation and extreme weather events.
Key demand of the question: Explain the distinct roles of the three synoptic systems in shaping rainfall distribution across India and analyse how their interaction leads to extreme weather phenomena such as floods, cloudbursts, and landslides.
Structure of the Answer: Introduction:
Briefly define the Indian monsoon as a complex system influenced by tropical and extratropical circulations.
• Explain the role of monsoon troughs in organizing low-pressure zones and controlling rainfall distribution.
• Describe how tropical depressions from the Bay of Bengal contribute to monsoon intensity and temporal variability.
• Discuss the influence of western disturbances in modulating rainfall over north and northwest India.
• Analyse how the interaction among these systems triggers extreme rainfall events and their regional impacts.
Conclusion: Conclude with a note on the need for improved forecasting and climate-adaptive strategies to mitigate extreme monsoon impacts.