Traditional Culture Encyclopedia - Weather inquiry - When is the rainy season at its peak?
When is the rainy season at its peak?
Snowflakes falling from the ice crystal layer melt into raindrops when passing through the warm layer, and then enter the cold air layer near the ground, and the raindrops quickly cool down and become supercooled raindrops (there is a physical property in the atmosphere that they are still in liquid state when the temperature is tens of degrees below zero (℃), which is called "supercooled" water drops, such as supercooled raindrops and supercooled fog drops). The fog droplets and water droplets that form rime are large and the condensation speed is fast. Because the diameter of these raindrops is very small, although the temperature dropped below zero degrees Celsius, they fell before freezing.
When these supercooled raindrops fall on the ground with a temperature below 0℃ and on objects such as branches and wires, they will gather on the whole surface of the objects and freeze immediately. Frozen into a transparent or translucent ice layer of ground glass, making branches or wires become thick popsicles, which are generally smooth or slightly prominent. Sometimes dripping water freezes and forms long icicles. This has become what we call "rainy days". If the rime is caused by non-supercooled raindrops falling on the ground or objects with poor cooling, and sleet condenses and freezes, that is, the ice layer formed by the mixture of amorphous appearance and crystal icing, generally this rime is very thin and will not exist for a long time.
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