What do you think of the wind direction in China weather forecast?

In the weather forecast, the wind direction is indicated by eight directions. The short straight line and small triangle above represent the wind speed and are perpendicular to the left side of the wind pole. Relatively long short straight lines are long strokes, and each long stroke represents the wind of 4m/s, which is the secondary wind in our forecast. The short stroke is about half of the long stroke, representing the wind of 2m/s, that is, the first-class wind. Each pennant represents a wind of 20 meters per second, which is equivalent to 8-9. ?

A wind flag consists of a mast and a feather. The wind pole is a vertical line in F, and the end of this vertical line indicates the direction of the wind.

Wind direction pole refers to the direction of the wind, 8 directions of public media and 16 directions of meteorological observation records (see the right figure). The plume of strong wind is represented by 3 or 4 short strokes and triangles, perpendicular to the right side of the wind pole end (northern hemisphere).

Extended data wind direction refers to the direction in which the wind blows. Generally, there are different determination methods. Mainly divided into oceans, continents and high altitudes. Wind direction can play an active role in people's life, production, factory buildings, agriculture, transportation, military and other fields.

Meteorology determines the wind direction as the wind direction. Therefore, the wind from the north is called the north wind and the wind from the south is called the south wind. When the meteorological station forecasts the wind, the wind direction swings from side to side in a certain direction. When it is uncertain, the word "bias" is used, such as northerly wind. When the wind is very small, it is explained by "uncertain wind direction"

References:

Baidu encyclopedia-wind direction