Tropopause Seasonal Changes MET

As well as the generic heights of the tropopause (Equator 16km; Mid-latitudes 11km; Poles 8km) you are also required to know how the height changes with the seasons. This is relatively straightforward: during summer for that hemisphere the air warms and expands, resulting in a thicker troposphere and a higher tropopause.

The exception is around the equator: because it is warm all year round, there is no real change in temperature and so the tropopause height remains relatively constant.

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What happens to the height of the tropopause at the Equator during summer and winter?
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