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Why do you think Atlantic Meridional Overturning Circulation (AMOC) is losing its stability? Also examine its implication on Global Climate system.

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. Why do you think Atlantic Meridional Overturning Circulation (AMOC) is losing its stability? Also examine its implication on Global Climate system.(250 words)

Reference:  Indian Express

Why the question:

A recent study notes that the Atlantic Meridional Overturning Circulation (AMOC) is losing its stability. Modeling studies have shown that an AMOC shutdown would cool the northern hemisphere and decrease rainfall over Europe.

Key Demand of the question:

Discuss the causative factors that have led to AMOC losing its stability and examine its implications on global climate systems.

Directive:

Examine – When asked to ‘Examine’, we must look into the topic (content words) in detail, inspect it, investigate it and establish the key facts and issues related to the topic in question. While doing so we should explain why these facts and issues are important and their implications.

Structure of the answer:

Introduction:

Start with what you understand by AMOC.

Body:

The answer body must have the following aspects covered:

What causes Atlantic Meridional overturning circulation?

What is the relationship between the great ocean conveyor and the Atlantic Meridional overturn circulation? What happens if the AMOC collapses?

How does the overturning circulation in the ocean influence the global heat balance?

Discuss its implication on Global Climate system.

Conclusion:

Conclude suitably.