How is the wind formed?

The formation of wind is the result of air flow. The formation of wind is that the hot air on the ground flows upward, and the cold air above decreases downward, thus causing air mobility.

Every part of the earth is digesting and absorbing the heat from the sun. Because of the asymmetry of heat in every place on the ground, the degree of air is different. Therefore, warm air expands lighter and then rises. Cold air refrigeration becomes heavier and heavier and then decreases, so that cold and hot air will cause liquidity and wind.

Wind is the standard air for fitness.

Air causes fitness exercise, mainly because different levels of the earth receive different solar irradiance. In equatorial and low latitudes, the height-width ratio of the sun is large, the sunshine time is long, the solar irradiance is strong, and the ground and air receive more heat and the temperature is high.

At higher latitudes, the aspect ratio of the sun is small, the sunshine time is short, the heat received by the ground and the air is small and the temperature is low. This temperature difference between high latitude and low latitude creates a standard pressure gradient direction between north and south, so that the air can do horizontal fitness exercise, and the wind should blow along the derivative of the standard pressure direction, that is, the vertical line and isobar blow from high pressure to low pressure.