Yesterday, after a storm in Xiamen, City in the Sky was staged, and a rare celestial phenomenon appeared, which was the lamppost that warmed the night. This celestial phenomenon is extremely rare and very beautiful. Let’s use the knowledge of constellations to reveal this celestial phenomenon in detail! let's see!

Rare light poles appear in Xiamen’s sky and warm night sky. Yesterday evening, a rare “warm night light pole” appeared in the sky over Xiamen. According to the analysis of meteorological expert Hu Xiao, rainfall occurred in Xiamen yesterday afternoon and stopped around the evening, and the air humidity was relatively high. Coupled with the low winds at high altitudes, the ice crystal-shaped "cirrus clouds" form a "mirror"-like state, thus reflecting the light on the ground into the dark night.

What is a night-warming lamppost? "Warm Night Lamp Post" is one of the wonders of "Lamp Post". There must be many people who have only heard or watched "Lamppost on a Cold Night" before last night. The so-called "cold night lamppost" refers to special ice crystals in the high air at low temperatures, which reflect the light on the ground into the air to form a spectacle. Colorful beams of light were like sharp swords, rising from the ground into the sky, which was very shocking. Because this spectacle often occurs on winter nights in cold areas, it is called "cold night lamppost." However, the "warm night lamppost" that appeared on the night of the 10th happened in warm Xiamen. Monitoring shows that from 20:00 to 21:00 yesterday, the temperature in Xiamen was generally around 23 degrees Celsius, while the temperature at the time of the "cold night lamppost" incident was usually below minus 20 degrees Celsius, and the temperature difference between the two was far above 40 degrees Celsius. According to Hu Xiao's analysis, the temperature is not the decisive factor in the formation of the "lamp post" spectacle. What really plays a decisive role is the state of wind and atmospheric clouds. Xiamen, which had just rained yesterday, has high air humidity. The influence of low clouds on the ground has ended, leaving only high clouds with ice crystals in the sky. Additionally, winds are lower at high altitudes. Therefore, on a calm day, the ice crystals in the clouds are evenly arranged laterally, like mirrors, reflecting light from the ground into the night. The reason why "lamp posts" appear on cold nights is because when the weather is calm, all the ice crystals are suspended in the air, and the entire atmosphere becomes a "curtain" of lights on the ground, so there are some differences between the two. This "warm night lamppost" in Xiamen can be described as "something you can encounter but cannot seek". It is the best in your lifetime. Because compared with the "cold night lamppost", the "warm night lamppost" has more stringent requirements for meteorological conditions. It cannot only be affected by medium and low clouds, but only high clouds exist; it also requires high air humidity, good breathability, and high The wind is low at altitude; the presence of ice crystals is indispensable, so this spectacle is really extremely rare.