Question

ii) Why are the tropics hotter than the mid-latitude? 1:19U:*​

Answer 1

Answer:

This is because as the dry air descends from high altitudes, its compression leads to an increase in its temperature. Typically, when moist air descends through 1 kilometer, it becomes hotter by 6 degrees Celsius, but it increases by 10 degrees Celsius when the air is dry.

So, if air temperature at the equator is 30 degrees Celsius, by the time it rises 10 kilometers in the sky, travels poleward and eventually descends into the tropics, it’s temperature would be raised by around 12 degrees. Therefore, air temperature in the tropics (42 degrees Celsius) is greater than that of the Equator (30 degrees Celsius). This is why tropical regions are hotter than the Equator.