Traditional Culture Encyclopedia - Weather forecast - Influence of Earth's Rotation Bias Force on Wind Direction

Influence of Earth's Rotation Bias Force on Wind Direction

The deflection force of the earth's rotation has the most prominent influence on the horizontal movement of airflow and water flow. For example, when the airflow on both sides of the equator flows in the equatorial direction, if there is no influence of this bias force, the north wind should always blow and the south wind should always blow to the north of the equator. However, due to the geostrophic deflection, the wind direction has changed, and the north of the equator is right, forming a northeast wind; Turn left south of the equator to form a southeast wind. The influence of the earth's rotation deviation on the weather system is also particularly important. On the tropical ocean surface, under the combined action of pressure gradient force and geostrophic deflection force, water vapor will produce the most serious natural disasters-tropical cyclones (tropical storms, typhoons, hurricanes), which have high frequency and large cumulative losses, far exceeding the disasters caused by earthquakes. In addition, the atmospheric movement and the wind belt near the surface make the ocean water move and form a large-scale ocean current. The deviation of the earth's rotation will force the ocean current to change its direction during the movement, which is of great significance for regulating the distribution of ocean water and heat, purifying seawater, fishery production, ocean navigation and weather forecast.