• The earth’s rotation about its axis affects the direction of the wind and this force is known as the Coriolis force. • Coriolis force is directly proportional to the angle of latitude. • It deflects the wind to the right direction in the northern hemisphere and the left direction in the southern hemisphere. • The deflection is even more when the wind velocity is high. • Coriolis force is maximum at the poles and is absent at the equator. • The Coriolis force acts perpendicular to the pressure gradient force. • The pressure gradient force is perpendicular, i.e., 90 Degree to an isobar.• The higher the pressure gradient force, the more is the wind’s speed and the larger is the deflection in the direction of wind occurs.