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What is a tropical cyclone and how are they classified in the Atlantic-North eastern Pacific Ocean region? Explain the mechanism of formation of a tropical cyclone.

Topic: Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc.

3. What is a tropical cyclone and how are they classified in the Atlantic-North eastern Pacific Ocean region? Explain the mechanism of formation of a tropical cyclone. (250 words)

Difficulty level: Easy

Reference: The Hindu

Why the question:

On Monday, Hurricane Ida knocked out power in all of New Orleans and inundated coastal Louisiana communities on a deadly path through the Gulf Coast that was still unfolding, promising more destruction.

Key Demand of the question:

To write about classification of cyclones and explain their formation.

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: 

Start by defining what a cyclone is and the characteristics of a tropical cyclone.

Body:

First, explain the various categories of tropical cyclones based on the speed of the wind.

Draw a schematic map indicating directions of cyclones in the Atlantic- North-eastern Pacific Ocean region focussing on the phenomena of thermal differences in different hemispheres and the consequent pressure variations. Also mention the necessary conditions for the formation of a cyclone and factors strengthening it leading to a hurricane or a typhoon.

Conclusion:

Summarise the above points.