Climatic characteristics of 202 1 xiaoxue solar term
Climatic characteristics of light snow solar terms
Every year165438+1October 22-23, depending on the light snow when the sun reaches 240, there are clouds in the 24 solar terms: "In the middle of June of 5438+00, the rain was thin because of the cold, so it condensed into snow. The words of the villain are not prosperous. " At this time, the weather is getting colder, and the average first snow period in the middle and lower reaches of the Yellow River is basically the same as the Light Snow Festival.
Although it began to snow, the amount of snow was generally small, and it was frozen at night and turned around by day. If the cold air is strong and the warm and humid airflow is active, it may snow heavily. For example, on June 5438+0993165438+1October 15 ~ 20, there were heavy snowstorms in some winter wheat areas in the north.
The ancient book "Qunfangpu" said: "A light snow will snow when it is cold, but the ground is not cold and the snow is not heavy." That is to say, because the weather is very cold, in the "light snow" solar term, the form of precipitation changed from rain to snow, but at this time, because the ground is not very cold, the number of snows is small and the amount of snow is not large, so it is called light snow. "Light Snow" is a festival that reflects weather phenomena.
There is little snow, and there is no snow on the ground. This is the original meaning of the solar term "light snow". Like rain and Grain Rain, light snow is a solar term that directly reflects precipitation.
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.
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).
Will it snow lightly?
It was a light snow, the temperature dropped, the temperature of the gas layer gradually dropped below 0 degrees, and it began to snow, but the amount of snow was not large. A relatively stable meridional circulation has been established in East Asia, and low pressure or trough often appears in Siberia. When moving eastward, there will be a large-scale cold air going south, and there will be a large-scale gale and cooling weather in eastern China. Light snow solar term is a solar term with high frequency of cold wave and strong cold air activity. When strong cold air affects, it is often accompanied by the first snow in winter.
However, whether it will snow on that day depends on the local actual situation. For example, in the light snow solar term in northern China, the intensity of cold air will be relatively strong, and it may snow at this time. In areas like our south, if the temperature can't meet the requirements of snow at this time, it may not snow.
What is the light snow time in 2022?
Gregorian calendar: Tuesday, 2022165438+1October 22nd 16: 20, 18 seconds.
Lunar calendar: October 29th, Renyin year.
"Snow" is the product of cold water vapor, representing cold and precipitation. The climate in this season is not deep and the precipitation is not heavy, so "light snow" is used to describe the climate characteristics of this season. "Light snow" is a metaphor, which reflects the active cold current and increased precipitation in this solar term, rather than the light snow under this solar term. The meaning of light snow in solar terms is different from that in weather. The light snow in the solar term means that the climate is not deep and the precipitation is not heavy, while the light snow in the weather means less snow. In fact, the solar terms with the largest snowfall in the whole year are not light snow and heavy snow. For example, in the middle and lower reaches of the Yellow River, the solar terms with the most snow all year round are neither "light snow or heavy snow" nor "slight cold or severe cold", but when it rains in beginning of spring and spring.
202 1 articles on climate characteristics of light snow solar terms;
★ What are the weather characteristics of 2021Xiaoxue solar terms?
★ 202 1 origin and stress of light snow solar terms
★ What are the weather characteristics of Xiaoxue solar terms?
★ The latest introduction of traditional folk customs of Xiaoxue solar terms
★ What are the characteristics of 2022 rain solar terms?
★ 202 1 Introduction to the origin of Xiaoxue solar terms
★ Knowledge introduction about light snow in the twenty-four solar terms.
★ xiaoman solar term 202 1 year children's health knowledge.
★2022 Rainwater Solar Festival Custom Activities
★ 202 1 tips on light snow and solar terms health care