What does the three-line diagram mean?

Refers to the temperature, humidity and pressure change curve of a single station. It is one of the single weather forecasting tools in China.

According to the dictionary network, we know that the temperature, humidity and pressure curves of a single site are drawn by pressure, temperature and humidity. Draw the evolution curve of air pressure, air temperature and humidity according to the observation time sequence on the coordinate map. Short-and medium-term forecast draws the observation value of 14 hour every day, and long-term forecast draws the average observation value at regular points all day. So the three-line diagram refers to the temperature, humidity and pressure change curve of a single station. It is one of the single weather forecasting tools in China.

Generally, one drawing paper is used every month, which can be compared in the same month every year. Sometimes the maximum curve and minimum curve of the calendar year are drawn on the map, and the * * * nine-segment line is called the nine-segment line map. From the three-line diagram, we can vividly see the changes of temperature, humidity and air pressure in this station every month. It is one of the single weather forecasting tools in China.