Which climatic phenomenon is characterized by cooler than normal sea surface temperatures in the central Pacific Ocean?

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OPSC OAS (Preliminary) Exam (GS) Official Paper-I (Held On: 15 Dec, 2024)
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  1. La Nina
  2. El Nino
  3. Monsoon
  4. Tornado

Answer (Detailed Solution Below)

Option 1 : La Nina
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ST 1: General Studies (Indian Polity - I)
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The correct answer is La Nina.

Key Points

  • La Nina is a climatic phenomenon characterized by cooler than normal sea surface temperatures in the central and eastern Pacific Ocean.
  • It typically occurs every 3 to 5 years, lasting for about 9 to 12 months.
  • La Nina events are associated with changes in weather patterns, including increased rainfall in some regions and drought in others.
  • It is the opposite phase of El Nino, which is associated with warmer than normal sea surface temperatures in the same region.

Additional Information

  • Monsoon: Monsoon refers to the seasonal reversing wind patterns accompanied by corresponding changes in precipitation, mainly observed in South and Southeast Asia.
  • Tornado: A tornado is a rapidly rotating column of air that extends from a thunderstorm to the ground, capable of causing significant damage due to high wind speeds.
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