Cedar in meteorology is also called ice, ice, ice and grapefruit. These phenomena occur in vertical structure of the atmosphere near the ground?

B, cold up and down, hot in the middle

You should be talking about Yu Di.

Rime is formed by the freezing of supercooled raindrops or Mao Mao raindrops on objects (the temperature is lower than 0℃), commonly known as "tree hanging", also known as ice and tree condensation; The rain that forms the glaze is called freezing rain. Yu Shu, also known as "Tung Oil Coagulation", is extremely difficult to eradicate and extremely destructive.

There are three special conditions for the formation of rime:

First, favorable precipitation conditions. Compared with the single continental high pressure in previous years, this year's southwest warm and humid air flow is super strong, and it meets the northeast air flow for a long time, which has the precipitation conditions caused by continuous rainy weather.

Second, the ground temperature has been below 0℃ for a long time. Since+10 in the first ten days of June, 5438, the south-central part has been at the bottom of the strong Mongolian high, and the ground has been continuously supplemented by cold air from the east to the south, resulting in continuous low-temperature weather, and the ground temperature is lower than 0℃, forming a deep cold underlying surface conducive to strong freezing.

Third, favorable inversion stratification conditions. The surface air temperature is lower than 0℃, and the warm air above 0℃ flows northward from 1500m to 3000m, forming a warm air layer or clouds. Above 3000m, there is an upper atmosphere with a temperature lower than 0℃, and the temperature of clouds is often lower than-10℃. The vertical structure of the atmosphere is cold up and down and warm in the middle, that is, there is an inversion layer near the ground.

The atmosphere is divided into ice crystal layer, warm layer and cold layer from top to bottom. In this way, 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. When it falls to the ground, branches, wires and other objects whose temperature is lower than 0℃, it gathers and spreads on the surface of the object, immediately freezes and forms rime.

Snow songs are a natural phenomenon in winter.

Snow song-formation: when snowflakes fall, the temperature is high, and some snowflakes fall to the ground or trees and become water. In the process of snowfall, if there is a cold current, the temperature will suddenly drop, the snow will no longer melt, the snow will be stuck and frozen by the water drops on the branches, and the snow will accumulate thicker and thicker, forming Melissa Zhou glaze. Snow songs are not common because of the bad forming conditions.