What are the characteristics of heavy snow solar terms?

Introduction: Heavy snow is a solar term and a weather feature. When it comes to heavy snow, everyone is thinking about whether we can see heavy snow during the solar term and whether we can go out to make a snowman and have a snowball fight. So, what are the characteristics of heavy snow solar terms? What are the characteristics of heavy snow solar terms? If you want to know, let's take a look at Bian Xiao's introduction.

What are the characteristics of heavy snow solar terms?

1. The climatic characteristics of entering the snow solar term are: the temperature will drop obviously and the weather will be cold. After entering the solar term of heavy snow, the minimum temperature in most parts of China has dropped to 0℃ or below.

2. Heavy snow or even blizzard often occurs in areas where cold and warm air meet at the front of strong cold air. It can be seen that the solar terms of heavy snow indicate the starting time of this period and the degree of heavy snow, which, like the solar terms of light snow, rain and Grain Rain, directly reflect the precipitation.

3. Heavy snow solar terms are affected by cold air, and heavy snowfall often occurs, causing snow on the ground. As the saying goes, "Xue Rui heralds a bumper harvest year". Covering the earth with snow can freeze pests to death and create a good wintering environment for wintering crops.

4. The solar term of heavy snow has entered the midwinter climate, and Chinese mainland has been completely controlled by Mongolian cold high pressure. The Aleutian depression is in the most stable period, and the bottom of the East Asian trough can reach the south of Taiwan Province Province, and the cold air constantly supplements and moves south. Strong cold air erupts southward, often accompanied by large-scale snowfall.

What are the characteristics of heavy snow solar terms?

In the snowy season, except for the winter-free areas in South China and South Yunnan, the vast land of China has been covered with winter clothes. The average temperature in Northeast and Northwest China is below-10℃, and the temperature in the Yellow River Basin and North China is also stable below 0℃. At this time, it has snowed in the Yellow River Basin, and in the farther north, it is already a northland scenery of "thousands of miles of ice, Wan Li snows". However, in the south, especially in Guangzhou and the Pearl River Delta, the vegetation is still lush and the feeling of dryness is still obvious, which is quite different from the climate in the north.

The winter climate in southern China is mild, with little rain and snow. The average temperature is about 2℃ to 4℃ higher than that in the middle and lower reaches of the Yangtze River, and the rainfall accounts for only about 5% of the whole year. Occasionally it snows, mostly in 1 and February; Snow on the ground is hard to see once every three to five years. It is often an unforgettable pleasure to witness the snow-covered earth and the green trees wrapped in silver. At this time, the climate in South China is still foggy. Generally, 65438+February is the month with the most foggy days. Fog usually appears on cloudless nights or partly cloudy mornings. Meteorology calls it radiation fog. "Ten fogs and nine sunny days", most of the fog dissipates before noon, and the sunshine in the afternoon will be particularly warm. In the heavy snow season, the following kinds of weather are more common.

Reduce the temperature

According to statistics, the month with the strongest cold air in China is 1 1. From June to February in 5438, the average temperature in most parts of the north was between _ 5℃ and _ 20℃, and frost sometimes appeared after the strong cold air in the south. A cold is very harmful to the health of the infirm and the elderly.

Heavy snow (blizzard)

We know that strong cold air can often form large-scale snowfall or local blizzard. Snowfall has many benefits, especially for alleviating winter drought, freezing farm diseases and insect pests and promoting winter tourism. However, the snowy road is slippery and icy, which easily leads to civil aviation flight delays, road traffic accidents and lane congestion; In some areas, the closure of mountains and roads by snowstorms will also pose a threat to the safety of people and animals in pastoral grasslands (commonly known as white disasters).

Major Snow

Strong cold air reaches the south, especially in Guizhou, Hunan, Hubei and other places, which is prone to freezing rain. Freezing rain is snow falling from the upper cold layer, sometimes it melts into rain in the middle layer, and becomes supercooled water with raindrops at a temperature below 0℃ in the lower cold layer. The supercooled water drops fall from the air, reach the ground and touch anything on the ground, and immediately freeze to form freezing rain. When freezing rain occurs, uneven ice shells appear on the ground and objects, which will have a great impact on traffic, electricity and communication, and will also cause damage to fruit trees. According to the statistics in the book Climate in the Middle and Lower Reaches of the Yangtze River, freezing rain is prone to occur in the middle and lower reaches of the Yangtze River when the temperature is _ 3 ~ 0℃ from June to February every year, and the probability of freezing rain is 76%.

hoar frost

According to statistics, from June 165438+ 10 to February of the following year, rime will appear in most parts of the northwest, northeast and Yangtze river basins, mostly in mountainous areas with high humidity. Rime is the milky white ice crystal precipitation formed on objects by direct condensation of water vapor in the air at low temperature or direct freezing of supercooled water droplets. The places with more rime days in winter in China are: Heilongjiang, Jilin, northern Xinjiang and northern Shaanxi. Among them, the rime in Jilin is the most famous, and the ice and snow world formed by the rime for several days in a row surprises people who like traveling and photography. Rime is a kind of natural beauty that people generally appreciate, but sometimes it can also become a natural disaster, which will seriously break wires and trees and affect traffic, power supply and communication.

doubt

In June 5438+February, in the south of the Yangtze River, when the temperature is low in the morning, or after rain and snow, the humidity near the ground is high, and patches of fog may appear. The foggy weather in northern cities will also be taken a look.

Ling Xun

In winter, Baotou River in Inner Mongolia is frozen, but Lanzhou River in the south is not frozen, and the river flows to the frozen river. Because the ice dam on the closed river blocked the river coming down from the upstream, the water level was forced to rise, which easily caused the flood disaster of Baotou River embankment. If the strong cold air comes late, it is easy to cause the flood disaster in 65438+February, which deserves attention.