As air in one region gets heated up, it rises up and due to this, pressure in this region drops and air from another region where pressure is high, comes and fills in the position of low pressure air region. So pressure difference between the two regions causes air movement. So as air converges at the center of a low-pressure system, it gets deflected either to the right or left. The low-pressure system above is spinning clockwise because the Coriolis Effect is pulling the air that's rushing to the center of the system to the left. As the air blows from high to low pressure the Coriolis force acts on it, diverting it, and we end up with air following the pressure contours and blowing around low pressure in an anticlockwise direction and around high pressure in a clockwise direction. The coriolis force caused by the Earth's rotation is what gives winds within high-pressure systems their clockwise circulation in the northern hemisphere and counterclockwise circulation in the southern hemisphere. Air exerts pressure in all directions. Gases exert pressure on the surface with which they come in contact. The pressure that a gas exerts on a surface is the result of gas particles colliding with the surface. Since the gas particles move randomly in all directions, they exert pressure equally in all the directions. Atmospheric pressure decreases as the height of a surface above ground level increases. This is because, as the altitude increases: the number of air molecules decreases the weight of the air decreases. As air tries to move from high to low pressure in the atmosphere, the Coriolis force diverts the air so that it follows the pressure contours. In the Northern Hemisphere, this means that air is blown around low pressure in an anticlockwise direction and around high pressure in a clockwise direction.

Winds blow away from high pressure. Swirling in the opposite direction from a low pressure system, the winds of a high pressure system rotate clockwise north of the equator and counterclockwise south of the equator. This is anticyclonic flow. The air is entering the low from all sides, flowing down the pressure gradient. The air flowing in towards the centre of the low is constantly turning right due to the Coriolis force, resulting in an anticlockwise circulation around the low. Likewise, think of a cell of high pressure surrounded by low pressure. Air blows from high to low pressure the Coriolis force acts on it, diverting it, and we end up with air following the pressure contours and blowing around low pressure in an anticlockwise direction and around high pressure in a clockwise direction. Air blows from high to low pressure the Coriolis force acts on it, diverting it, and we end up with air following the pressure contours and blowing around low pressure in an anticlockwise direction and around high pressure in a clockwise direction. Because of Earth's spin and the Coriolis Effect, winds of a low pressure system swirl counterclockwise north of the equator and clockwise south of the equator. Air moves from a region of high pressure to a region of low pressure. Different temperatures in different locations on earth cause a difference in pressure in all these regions. This uneven pressure results in the natural movement of air as wind. Air in one region gets heated up, it rises up and due to this, pressure in this region drops and air from another region where pressure is high, comes and fills in the position of low pressure air region. So pressure difference between the two regions causes air movement. Air in high pressure systems moves in an anticlockwise direction while air in low pressure systems moves in a clockwise direction due to the rotation of the Earth. At the surface of the Earth air flows from high pressure systems into low pressure systems.