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In the South Atlantic and South Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?

  • a)
    Inter Tropical Convergence Zone seldom occurs 

  • b)
    Sea Surface temperature are low

  • c)
    Coriolis force is too weak

  • d)
    Absence of land in those regions

Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In the South Atlantic and South Eastern Pacific regions in tropical la...
Tropical cyclones originate and intensify over warm tropical oceans. The conditions favourable for the formation and intensification of tropical storms are: (i) Large sea surface with temperature higher than 27° C; (ii) Presence of the Coriolis force; (iii) Small variations in the vertical wind speed; (iv) A preexisting weak- low-pressure area or low-levelcyclonic circulation; (v) Upper divergence above the sea level system.
The most proximate reasons for the lack of activity in the South Atlantic are sea surface temperatures that tend to run a shade cooler than ideal for tropical cyclone formation even in the southern summer, climatologically high values of vertical wind shear across that basin throughout the year, and a lack of pre-existing centers of rotation (vorticity) in that area.
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Most Upvoted Answer
In the South Atlantic and South Eastern Pacific regions in tropical la...
Inter Tropical Convergence Zone (ITCZ)
- The Inter Tropical Convergence Zone is a belt of low pressure near the equator where trade winds from each hemisphere meet.
- This convergence of winds results in rising air and the formation of clouds and thunderstorms.
- Cyclones typically form in regions with a high amount of convective activity, which is often associated with the ITCZ.

Reason for cyclones not originating in South Atlantic and South Eastern Pacific regions
- In the South Atlantic and South Eastern Pacific regions, the Inter Tropical Convergence Zone seldom occurs, or it is weaker compared to other tropical regions.
- The absence or weakness of the ITCZ in these areas results in less convective activity, which is necessary for the formation of cyclones.
- Without the necessary atmospheric conditions provided by the ITCZ, the development of cyclones is hindered in these regions.

Conclusion
In conclusion, the lack of a robust Inter Tropical Convergence Zone in the South Atlantic and South Eastern Pacific regions in tropical latitudes is the primary reason why cyclones do not originate there. The absence of this key atmospheric feature results in reduced convective activity, which is essential for cyclone formation.
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Community Answer
In the South Atlantic and South Eastern Pacific regions in tropical la...
Answer is b because of low temp is big factor as compare to other factor
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In the South Atlantic and South Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?a)Inter Tropical Convergence Zone seldom occursb)Sea Surface temperature are lowc)Coriolis force is too weakd)Absence of land in those regionsCorrect answer is option 'A'. Can you explain this answer? for UPSC 2026 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about In the South Atlantic and South Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?a)Inter Tropical Convergence Zone seldom occursb)Sea Surface temperature are lowc)Coriolis force is too weakd)Absence of land in those regionsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the South Atlantic and South Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?a)Inter Tropical Convergence Zone seldom occursb)Sea Surface temperature are lowc)Coriolis force is too weakd)Absence of land in those regionsCorrect answer is option 'A'. Can you explain this answer?.
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