Consider the following statements

I. Doldrums are the strong winds that have rapid surface movement.

II. The prevailing trade wind direction in northern hemisphere is northwest.

Which of the above statements is/are correct? 

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APPSC Group-1 (Prelims) Exam Official Paper-I (Held On: 17 Mar, 2024)
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  1. Statement I only
  2. Statement II only
  3. Both of them
  4. None of them

Answer (Detailed Solution Below)

Option 4 : None of them
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Detailed Solution

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The correct answer is None of them.

Key Points

  • Doldrums are not strong winds. They are regions of calm, light winds near the equator where the trade winds converge, often leading to periods of no wind.
  • The prevailing trade wind direction in the northern hemisphere is actually from the northeast, not the northwest.
  • Therefore, both statements I and II are incorrect.
  • Correct understanding of the trade winds and doldrums is essential for navigation and climate studies.

Additional Information

  • Doldrums
    • The doldrums are a low-pressure area around the equator where the prevailing winds are calm.
    • This area is characterized by weak and variable winds, often leading to extended periods of calm weather, which historically caused sailing ships to be becalmed.
  • Trade Winds
    • Trade winds are the prevailing pattern of easterly surface winds found in the tropics, within the lower portion of the Earth's atmosphere, near the equator.
    • These winds blow predominantly from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere.
    • They are caused by the Earth's rotation and the differential heating of the Earth's surface.
  • Climate Impact
    • Both the doldrums and trade winds play crucial roles in the Earth's climate system, influencing weather patterns, ocean currents, and the distribution of heat and moisture around the planet.
    • Understanding these wind patterns is essential for meteorology, navigation, and climate science.
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