What weather symbol are the three curves?

In weather forecasts, the three curved lines are signs of breezy weather. It looks like a wave, with three lines, the top one curling up and the bottom two curling down.

The main content of the weather forecast is the cloudiness, rain, snow, maximum and minimum temperatures, wind direction and wind force, and special disastrous weather in a region or city in the future. As far as China is concerned, meteorological observatories can accurately predict the location and intensity of natural disasters such as cold waves, typhoons, and heavy rains, which can directly serve industrial and agricultural production and people's lives.

Weather forecasting is based on meteorological observation data and applying the principles and methods of synoptics, dynamical meteorology, and statistics to make qualitative or quantitative predictions of the weather conditions in a certain area or location for a certain period of time in the future. It is an important goal of atmospheric science research and is of great significance to people's lives.