What does the star have to do with the weather? Research report. Thank you, everyone.

At night, the number of stars is closely related to the sky conditions at that time. When there are clouds in the sky, because the stars will be covered by clouds; At the same time, starlight will be reflected and absorbed by water droplets, so from the ground, there are few stars and the luminosity is very weak. If there are no clouds in the sky and there is less water vapor in the air, there will be many stars from the ground. In summer, when some parts of China are controlled by subtropical high system, the air in these areas mostly sinks. In the process of sinking, the air pressure gradually increases and the volume is compressed, so the temperature will gradually increase, the relative humidity of the air will gradually decrease, and the air layer will become relatively dry, resulting in cloudless weather. After nightfall, the solar radiation heat source is interrupted, the ground temperature drops rapidly, the evaporation of water vapor weakens, the temperature in the lower layer drops, the gas layer becomes drier and more stable, and people see more stars. Therefore, people can judge that the local area is controlled by subtropical high from the fact that there are many stars in summer nights. Because under the control of this air pressure, the weather is sunny and sunny in the case of partial cloudy. During the day, solar energy fully irradiates the ground, which is a strong ground heating. When this high air pressure prevails, the weather is often stable and rarely changes. Therefore, from the phenomenon of many stars in summer nights, we can further judge that the weather will be hotter the next day. This is the truth of the words "The sky is full of stars, and it will be sunny tomorrow" and "The stars are bright at night, but it will still be sunny in the Ming Dynasty". But because the air is clear, there is a maximum. So there is a limit to the density of stars seen by the naked eye. However, the temperature rise is not limited by this, the subtropical high cannot last for a long time, and there are many reasons for the change of weather temperature. Therefore, "the more stars" does not necessarily mean "the hotter tomorrow".