The role of wind in weather forecast

Meteorology determines the wind direction as the wind direction. Meteorological stations usually issue wind direction forecasts in eight directions, namely, east (e), south (s), west (w), north (n), southeast (SE), southwest (SW), northwest (NW) and northeast (NE). 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. Wind is an important research in meteorology. Simply put, the wind direction refers to the direction in which the wind comes, and it is indicated by 16 azimuth except for the static wind. Wind speed refers to the ratio of the distance the air flies to the time required for the flight distance. The unit of wind speed is expressed in meters/second, and it is an integer for regular observation, and it is recorded by itself, with one decimal place reserved. In addition, wind measurement is also observed by wind level. The wind level is divided into 18 according to the phenomenon caused by the wind to the ground objects, and is represented by the grade number of 0 ~ 17. The determination of wind power level must be a calculated value so that the wind is not blocked by buildings.