Light snow is the 20th solar term among the 24 solar terms and the 2nd solar term in winter. The time is Gregorian calendar165438+1October 22nd or 23rd, that is, when the sun reaches 240. Light snow is a solar term reflecting precipitation and temperature, and it is a solar term with high frequency of cold wave and strong cold air activity. The arrival of the light snow solar term means that the weather will get colder and colder and the precipitation will gradually increase.

Snow is the product of cold weather, so "light snow" is used to compare the climate characteristics of this solar term "not deep climate and not heavy precipitation" The light snow solar term reflects the changing trend of temperature and precipitation, which does not mean that there is a small amount of snow under this solar term. The light snow in solar terms is not necessarily related to the light snow in the weather.

During the light snow solar term, a relatively stable meridional circulation has been established in East Asia, and a low pressure or trough often appears in Siberia. When moving eastward, there will be a large range of cold air going south, which will bring a large range of strong winds and cool weather.

Light snow is a solar term reflecting precipitation and temperature, and it is a solar term with high frequency of cold wave and strong cold air activity. Light snow solar terms indicate that a relatively stable meridional circulation has been established in East Asia. When the Siberian depression or trough moves eastward, there will be a large range of cold air going south, which will bring a large range of windy and cool weather.

The light snow in solar terms is not necessarily related to the light snow in the weather. The meaning of "light snow" in solar terms is different from that in daily weather forecast. Light snow solar term is a climate concept, which reflects the temperature and precipitation. The "light snow" in the weather forecast refers to the snow with less snowfall intensity.

In meteorology, when the horizontal visual distance is equal to or greater than 1000 meters, the depth of snow on the ground is less than 3 cm, and the snowfall in 24 hours is between 0. 1-2.4 mm, it is called "light snow" .. Light snow solar terms do not necessarily snow. In fact, the solar terms with the largest snowfall in the whole year are not in light snow and heavy snow. For example, the solar term with the largest annual snowfall in the middle and lower reaches of the Yellow River and its vicinity is neither "light snow or heavy snow, nor slight cold or severe cold", but in the spring rain solar term.

Poems about solar terms and light snow are as follows:

Flowers and snow are never tired of seeing in the wind, and I would rather lose the forest. Sad people are under the book window, and colds are flying. New snow is like a flower, floating in the wind, and I will never get tired of it. I sit at the window and enjoy the snow leisurely. The world is cold.

The clouds darkened and began to grow slightly. I heard that the window was spilled. What worries me most is the barking of dogs in the north and south. I am afraid that the north wind will fly back. Dream brocade can be cut into beautiful sentences, and cold clothes can be woven at the temples. Sleeping on the stove is difficult to support, and plum blossoms are called clearance. The sky was dark, and the thick cymbals fell on the enough paper with a bang. I can't help but worry that the barking of dogs will break this tranquility, and I am afraid that the howling of the north wind will destroy this elegance.