Multiple choice

Which factor is responsible for the low temperature of tropopause at the equator?

  1. Higher altitude

  2. Geographical feauters beneath the layer

  3. Both (1) and (2)

  4. None of these
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A Correct answer
Explanation

The tropopause at the equator is at a much higher altitude (17-18 km) compared to the poles (8-9 km). Since the troposphere cools with altitude at a roughly constant lapse rate, the higher altitude at the equator results in significantly lower temperatures at the tropopause level.

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