What is the symbol of the wind?

The symbol of wind is a wind pole with tail feathers, as shown in the figure below.

Wind has both magnitude and direction, so the wind forecast includes wind speed and direction. The magnitude of wind speed is often expressed by several winds. The level of wind is determined according to the degree of influence of wind on ground objects. Meteorologically, at present, it is generally divided into thirteen grades according to the magnitude of wind (for some typhoons, it is divided into 17 grade):

In the weather forecast, we often hear the expression "the north wind is 4 to 5", in which the wind refers to the average wind; If you hear the phrase "gust 7", gust refers to the wind with high and low speed, and the wind at this time refers to the high-speed wind.

wind scale

The greater the air pressure difference between two adjacent places, the faster the air flow, the greater the wind speed and the greater the wind force. Therefore, the magnitude of wind is usually expressed by wind power. The unit of wind speed is meters per second or kilometers per hour. When the weather forecast is released, the wind level is mostly used.

More than 200 years ago, there were no instruments for measuring the magnitude of wind, and there were no unified regulations. Every country expresses itself in its own way. At that time, there was a man named beaufort in England. He carefully observed the situation of various objects on land and at sea in different winds, and accumulated 50 years of experience before he divided the wind into 13 in 1805, which is also commonly known as Beaufort wind scale.

Later, after research and supplement, the original explanation was explained more clearly, and the speed of each wind level was increased, which became the "jargon" for forecasting wind power.