Question

Discuss the forces which govern the air movement on the earth's surface

Answer 1

The factors that govern the air movement on the Earth's surface are:

1. Pressure gradient - Air moves from areas of high pressure to areas of low pressure. For example, if a balloon is inflated it becomes a high pressure area. When it is punctured the air inside the balloon quickly moves out where the pressure of air is lower.

2. Coriolis effect - It refers to the deflection of moving air due to the rotation of the Earth.

3. Friction - This has an impact on the movement of the boundary layer or the air which is in contact with the Earth. It slows down the air. The Coriolis effects becomes less if the air moves slowly. So the air near the surface of the Earth does not move directly parallel between the areas of high and low pressures. It gets deflected outward from a high pressure and inward toward a low pressure. So low pressures fill and high pressures subside.

Answer 2

The speed and bearing of the wind are administered by three powers; the pressure gradient force (PGF), the Coriolis Force and friction. PGF is the power created by contrasts in barometric pressure between two areas and is in charge of the stream of air from a territory of high pressure to a zone of low pressure.

More winds are by and large expected when noteworthy pressure contrasts happen over moderately short distances

The surface of the Earth isn't smooth, and as the wind blows it is liable to friction as it experiences surface highlights, for example, mountains, hills, structures, trees, and so on.