#文章首发挑战赛#
The New Year's Day holiday has just passed, although most cities in the country ushered in snowfall, it is also a good weather, and the weather will change a little tomorrow, please look down.
From 08:00 on January 3 to 08:00 on January 4, 2024, the mainland will usher in a cold wave of cold air, causing widespread rain and snow. This cold wave is expected to cover northeastern Inner Mongolia, northern Heilongjiang, northern Xinjiang, southern and eastern Tibet, southern Sichuan Plateau, and northwestern Yunnan, with localized light to moderate snow or sleet.
At the same time, light rain will be ushered in southeastern Tibet, central and eastern Yunnan, southern and southeastern coastal areas of Guangxi, most of Hainan Island, and eastern Taiwan Island.
The cause of the formation of cold air in cold waves
A cold wave is a strong wave of cold air that forms in mainland China and sweeps from north to south. Its formation is mainly affected by the southward movement of the northern high pressure and the southward movement of the polar air mass. On the front lines of cold spells, there are often significant plummeting temperatures, increased winds, and colder weather.
In the process of cold air moving south, it is blocked by warm and humid airflow, and the air has to be lifted to form precipitation, so it is accompanied by the appearance of rain and snow. This is why there is often a wide range of rain and snow during the passage of cold waves.
Distribution and impact of rain and snow
Northeast Inner Mongolia, northern Heilongjiang, northern Xinjiang and other places will usher in light to moderate snow or sleet, which is also a typical manifestation under the influence of cold waves. Snowflakes flutter, the earth is covered in silver, and the chill is getting thicker.
The southern and eastern parts of Tibet, the southern part of the western Sichuan Plateau, and the northwestern part of Yunnan, although they are in the south, will also be affected by the cold wave, and light to moderate snow will occur. This phenomenon is known in meteorology as "cooling snow in the south".
The southeastern part of Tibet, the central and eastern parts of Yunnan, the southern and southeastern coasts of Guangxi, most of Hainan Island, and the eastern part of Taiwan Island ushered in light rain, which may bring a fresh rain to the local area and add warmth to the cold winter day.
The advent of cold waves is often closely related to the solar terms on the mainland. The cold wave coincided with the "Xiaohan" season, which is one of the 24 solar terms, indicating that the cold is gradually flourishing, which is the beginning of the severe cold season. There is a cloud in the agricultural proverb: "A small cold and a big cold, two or three cold comes." The arrival of the cold wave also confirms this folk wisdom.
There is a saying in the agricultural proverb that "the cold wave is cold in the sky, and the ice and snow will come down", which reflects the unique perception of farmers about the cold wave and cold air. They predicted the likelihood of snowfall by observing the celestial phenomena to see if a cold wave was accompanied by widespread precipitation.
This kind of agricultural proverb based on celestial phenomena has been passed down to this day, reflecting the sensitivity of mainland agricultural societies to changes in the natural environment.
Overall, the arrival of the cold wave and cold air will bring rain and snow to most parts of the continent, and different regions will present a colorful winter scene. For the majority of farmers, this is also an important moment to observe the sky and judge the weather.
I hope that everyone will enjoy the beauty of the snow while keeping warm and spend a healthy and happy winter.