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Explain the mechanism of La-Nina. Examine the impact of La Nina on the Indian subcontinent.

Topic: Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc., geographical features and their location-changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes.

1. Explain the mechanism of La-Nina. Examine the impact of La Nina on the Indian subcontinent. (250 words)

Difficulty level: Easy

Reference: Indian Express ,  Insights on India

Why the question:

There is a growing body of research suggesting that climate change can cause extreme and more frequent El Nino and La Nina events.

Key Demand of the question:

To write about La-Nina, write its impact on India.

Directive word: 

Explain – Clarify the topic by giving a detailed account as to how and why it occurred, or what is the context. You must be defining key terms wherever appropriate and substantiate with relevant associated facts.

Structure of the answer:

Introduction: 

Begin the answer by defining La Nina

Body:

In the first part, explain the mechanism behind La-Nina on the basis of their occurrence, mechanism, frequency of occurrence, duration, conditions required to occur etc.

Next, in detail write about how the la-Nina impacts the India subcontinent.

Next, write about new prediction models such as supercomputing etc which can help us better predict these extreme events and their efficacy.

Conclusion:

Conclude by summarising.