What are the weather characteristics of the 2022 Frost Festival
Frost is the ground of the Water gas encountered cold weather condensation into, so frost is not frost, but that the weather is cold, the earth will produce the phenomenon of the first frost. With a scientific point of view, "dew for frost" is inaccurate. Dew drops freeze into frozen dew, which are hard small ice beads. Frost refers to a sharp drop in temperature caused by crop frost phenomenon, the damage caused by the temperature of the crop, varieties and reproductive period of different and different.
And the formation of frost, the temperature of the ground or features must fall below 0 ℃, and the water vapor content of the air in the stratum to a certain degree. Therefore, frost does not necessarily occur when frost occurs, and frost does not necessarily occur when frost occurs. However, because the temperature is already relatively low when frost is seen, if it continues to cool, it can easily lead to frost.
Frost climate characteristics
Northwest, northeast and other places: the weather characteristics of early winter
In late October - early November, China's northwest, northeast and other regions, have been presented with a chilly winds and leaves of the early winter scene, cold air in these areas is not only a regular guest and is the first to be received by the guests. General cold air to pass through the area with either dry wind or rain and snow, and cooling is every batch of cold air to send on the specialties. Since our country has entered a warm cycle since the mid-80s, exceptionally strong cold air is rare. But when it comes to strong cold air, the lowest temperature drops to -7, -8 ℃, or even -10 ℃ below, the cold wind and snowflakes **** dance, but also make people cold can be. A few cases of localized heavy snow is prone to form snowstorms, and the northern sea area of the northern gale is also worth noting.
The cold air is not useless, whenever it passes, the sky is clear, the air is fresh and the sun shines. Some people call the cold air the cleaner of the city's atmospheric pollution, and this reputation can really be true. In some lakes, forests, valleys and other places with high humidity, people can sometimes witness the luscious, white and elegant figure of freezing fog.
Southwest and other places: began to enter the period of less rain
From the beginning of November, West China's autumn rain is basically over, and from now on into the year's less rainy period. Southwest China is located in the plateau, some are located in the basin, hills, the weather will naturally be some differences. But in general, the average temperature at this time has not reached the standard of winter, that is, not as humid as summer, not as dry as spring, the temperature difference between morning and evening is not as obvious as the spring, it should be said that the weather is more comfortable time of the year. Sichuan Basin area, during this period, the climate is mild, the fields are green, orange and green. Su Shi, a great writer of the Northern Song Dynasty, said in a poem, "Thousands of trees are swept into yellow, but only the hibiscus is fragrant alone". The hibiscus trees are in full bloom, making the rich "Tianfu" even more colorful.
Beautiful symbolism of frost
Frost is the last of the twenty-four solar terms in the fall, containing the meaning of the weather is getting colder, the first frost appeared, but also means the beginning of winter. Frost season is an important point of health care, there is a folk proverb "a year to make up through, not as good as make up the frost", which shows that this festival has a great impact on people.
Poetry: "Frost leaves red than February flowers". After the frost, maple trees, sumac trees and other trees in the autumn frost soothing, began to turn the hills red and yellow, like fire like brocade, very spectacular. When you are out hiking and enjoying the beautiful scenery, you must pay attention to keep warm, especially to protect the knee joints, and not to exercise too much. Knee joints in the cold stimulus, blood vessel contraction, blood circulation becomes poor, will lead to pain, so in the cold days should pay attention to keep warm, if necessary, wear knee pads.
The end of autumn, but also the high incidence of respiratory diseases, it is advisable to eat more with the production of fluids, moistening the lungs, cough effect of food, such as pears, apples, white fruit, onions, mustard greens, radish and so on. In addition rubbing the Yingxiang points on both sides of the nose helps us prevent respiratory diseases.