Q. Which of the following conditions is/are favorable for the formation & intensification of Tropical Cyclones?
1. Upper divergence above the sea level system
2. Consistent source of heat
3. High-level cyclonic circulation
Select the correct answer from the codes given below:

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: A
Notes:

The conditions favorable for the formation and intensification of tropical storms are: 

  • A consistent source of heat as tropical cyclones are thermally induced low-pressure systems. 
  • Large sea surface with a temperature higher than 27° C which is possible only during the late summers i.e. September, October, and November 
  • Presence of the Coriolis force. 
  • Small variations in the vertical wind speed. 
  • A pre-existing weak low-pressure area or low-level-cyclonic circulation; 
  • Upper divergence above the sea level system. 

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