Question

difference between equatorial low pressure belt and subpolar low pressure belt

Answer 1

Equatorial low pressure belt

As this region lies along the equator, it receives highest amount of insolation.

Due to intense heating, air gets warmed up and rises over the equatorial region

This belt is characterized by extremely low pressure with calm conditions.

Subpolar low pressure belt

Located between 45°N and S latitudes and the Arctic and the Antarctic circles (66.5° N and S latitudes).

Owning to low temperatures in these latitudes the sub polar low pressure belts are not very well pronounced year long.

During winter, because of a high contrast between land and sea. During summer, a lesser contrast results in a more developed and regular.

Answer 2

equatorial low pressure belt or Doldrums extend upto 5 degree north and 5 degrees south of the equator

this region receives vertical rays of the sun almost throughout the year . hence the air is very hot due to Rapid Terrestrial radiation .
the hot air expands and becomes less dense .

so the light Air Rises creating low pressure in this region .


subpolar low pressure belt extends from 60 degree north to 65 degree north and 60 degree South to 65 degree south of the equator

these belts should actually be high pressure belts due to very cold air over there .
but there is a low pressure belt which is created mainly due to the effect of rotation of the earth that swings the bulk of air from the poles towards equator .