At 7 o'clock in the morning, the special service brigade of Jilin Forest Fire Brigade received an alarm from the Northern Greening Center for help. Trees on both sides of the second ring road of Jingyuetan and the main road of Jingyuetan forest area in Changchun City were frozen and hung overnight by freezing rain, and many branches bent under heavy pressure, causing traffic jams and affecting people's travel. The disaster was an order, and the brigade immediately dispatched 40 commanders and soldiers, carrying more than 80 pieces (sets) of equipment such as road rescue and chainsaw, and rushed to the scene to carry out rescue and cleaning tasks. At present, the brigade commanders are still cleaning up the snowy sections, and some roads have been rushed through. ?
Recently, most parts of the country have ushered in a round of cooling, and in Jilin Province, an extremely rare ice rain recently happened, which just verified a lyric: the cold ice rain hit my face! So what is ice rain? Why is it rare? Does it rain very little? What will be the serious impact? Let's take a look at the details of the rare ice and rain in Jilin.
Ice rain is a natural phenomenon when winter and spring alternate. The local surface temperature is below zero degrees Celsius, and the rain falls to the ground and becomes ice. A natural phenomenon that occurs when winter and spring alternate. Spring has come, the cold current has not retreated, it began to rain, and the ground turned into ice. When the local surface temperature is below zero degrees Celsius, the rain turns into ice. After the rain falls, it can't gather together or blend with the ground, but it freezes in a large area.
How is the ice rain formed?
Ice rain is mostly caused by the confrontation between cold and warm air when strong cold air or cold wave comes. When the cold front invaded, the air temperature under the front dropped below 0℃, while the temperature above the front was above 0℃ and humid. When the raindrops formed in the clouds above the front fall into the gas layer with the temperature below 0℃, they can become supercooled raindrops. Once supercooled raindrops fall to the ground or ground objects with a temperature below 0℃, they immediately freeze into ice, forming a dense, smooth and sometimes transparent glassy ice shell.
After the ice rain falls on trees and wires whose surface temperature is lower than freezing point, a crystal clear ice layer is immediately formed around them. At this time, raindrops continue to fall on the surface of the frozen object and slowly droop, thus forming icicles, which are called ice hanging in some places. Various forms of ice hanging are dazzling. Lushan, Huangshan and other famous mountains are often dressed up by freezing rain in winter. The winter rainy season along the Songhua River in Jilin Province is one of the wonders of China, attracting thousands of Chinese and foreign tourists every year.
What serious impact will the ice rain have?
The scenery of ice and rain is worth seeing, but it is a disastrous weather after all, and its harm can not be ignored. After the wire freezes, it will shrink when it is cold, and it will break under the influence of the weight of freezing rain. Sometimes, rows of telephone poles are knocked down, resulting in interruption of telecommunications and transmission. Highway traffic is blocked by ground icing, and traffic accidents increase accordingly. If the ground freezes, it will freeze the green winter wheat or the crops planted in early spring. In addition, freezing rain will also destroy young forests and frostbitten fruit trees in a large area. Freezing rain in Jilin has caused water and power outages in some urban areas of Jilin!