The Sub-polar low Pressure Belts

The sub-polar low pressure belts extend between 450N and the Arctic Circle in the northern hemisphere and between450S and the Antarctic Circle in the southern hemisphere.

They are known as the North sub-polar low and the South sub-polar low pressure belts respectively.

Winds coming from the sub-tropical and the polar high belts converge here to produce cyclonic storms or low pressure conditions.

This zone of convergence is also known as polar front.