Coriolis effect- Cause and its effect on wind direction



Coriolis force Geography for NDA,CDS,CPO,UPSC and SSC

Due to the rotation of the earth there is a force that is generated and it acts perpendicular to the direction of motion and to the axis of rotation called Coriolis force.


Rotating earth from west to east on its axis
Coriolis Force



We know that earth is a sphere and it is much wider in the middle and narrow at poles as a result the speed of the surface of the earth at the equator is much faster than the speed at the poles.

So if anything has to come straight from the poles towards the equator it gets deflected to the right in the northern hemisphere and to the left in the southern hemisphere and this force is called Coriolis force.

Effect of Coriolis Force

It causes fluids like water and air to curve as they travel across or above the earth's surface due to Coriolis force.

Coriolis force play important role during formation of cyclone. Coriolis force is reason behind the movement of cyclone that is whether it is clockwise or anticlockwise.


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