Consider the following statements : 1. The doldrums is a low pressur

Consider the following statements :

  • 1. The doldrums is a low pressure area around Equator where the prevailing winds are calm.
  • 2. Chinook is a hot and dry wind that blows in winter and therefore raises the temperature in a short time.

Which of the statements given above is/are correct ?

1 only
2 only
Both 1 and 2
Neither 1 nor 2
This question was previously asked in
UPSC NDA-1 – 2018
Both statements 1 and 2 are correct. The doldrums are indeed a low-pressure belt around the equator with calm winds, and the Chinook is a hot, dry wind that can cause rapid temperature increases, often occurring in winter.
– The doldrums correspond to the Intertropical Convergence Zone (ITCZ), where air converges and rises, leading to low surface pressure and light winds.
– The Chinook is a type of Foehn wind resulting from adiabatic warming as air descends the leeward side of a mountain range. It is known for its ability to melt snow rapidly, hence the name “snow eater”.
Foehn winds like the Chinook occur when moist air is forced up a mountain, releases moisture as precipitation on the windward side, and then descends dryly and warms adiabatically on the leeward side. This can lead to significant temperature rises in valleys and plains below.
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