How is Jilin rime formed?
Water droplets condense or freeze directly.
The winter climate in Jilin is severely cold, and the temperature in the early morning is usually as low as minus 20-25 degrees Celsius. However, the lake water released from the sluice gate of the Fengman Hydropower Station at the bottom of the Songhua Lake Dam is 4 degrees Celsius above zero. This temperature difference of 25-30℃ causes thick fog to rise from the lake as soon as it comes out of the sluice gate.
Rime is formed by the condensation of supercooled water droplets. Rime forms when supercooled water droplets (temperatures below freezing) collide with objects that are also below freezing. When water vapor in the air hits an object and immediately condenses into a solid state, a rime layer or rime deposit will form.
Rime is neither ice nor snow. It is the result of the countless water vapor in the fog that is below zero degrees Celsius and has not yet condensed, which accumulates and freezes on branches and other objects with the wind. It appears as a white opaque granular structure deposit. things. Extended information
Jilin rime occurs in the downstream coastal area of Fengman Dam in Songhua Lake, Jilin City. Due to the interaction between the cold climate conditions in the Northeast and the warmer river water, the moist water mist condenses directly into frost crystals and adheres to the trees along the embankment to form the Snow Willow phenomenon.
Jilin rime is a natural cleaner of the air. When people watch Jilin rime, which looks like jade trees and flowers, they will feel that the air is particularly fresh and refreshing, and it moisturizes the lungs. This is because rime has the inherent function of purifying the air.
There are a large number of particles invisible to the naked eye in the air. Most of their diameters are below 2.5 microns, which is about one-fortieth the diameter of a human hair. They are small in size and extremely light in weight. , suspended in the air, endangering people's health.
Xinhuanet-Focus on Jilin Rime
Baidu Encyclopedia-Rime (a natural landscape formed by condensation of water vapor)