What is the cause of rime in Jilin?

Rime, commonly known as tree hanging, is a kind of ice and snow beauty. It is the result of frozen water droplets below zero degrees Celsius piling up on branches and other things with the wind. It is actually a kind of frost. Therefore, rime phenomenon is very common in northern China, and it is also common in southern mountainous areas, as long as there are cooling water droplets in the fog.

The rime in Jilin is the most famous, and the key is the contradictory natural conditions of "cold atmosphere and warm river". The winter climate in Jilin is very cold, and the temperature in the morning is generally as low as -20 ~ 25℃. Although there is 1 m hard ice on Songhua Lake, the water discharged from the spillway of Fengman Hydropower Station at the bottom of Songhua Lake Dam is 4℃ above zero. The temperature difference of 25 ~ 30% makes the lake rise like a boiling pot as soon as it comes out of the gate. Dozens of miles of Yunlong flows through Jilin City with the Songhua River water source, which is very spectacular. This is a unique source of raw materials for the beautiful rime in Jilin.