Is it cold in early winter?

"Autumn wind blows the old court, and Huang Yedanfeng is a passer-by. A small Zen lamp for half a month is colder today than last night. " The arrival of solar terms in beginning of winter represents the beginning of winter. So, did the weather start to "be colder today than last night" and get colder all the way? Today's solar calendar will introduce you. Is it cold in the winter of 20 17?

Has it started to get cold since winter?

After entering the winter, the temperature drops obviously. With the strengthening of cold air, the cooling trend accelerates. The average temperature of people in the middle and lower reaches of the Yangtze River is between 12℃ and 15℃. The rain has stopped in Mao Mao. If you encounter strong cold air and move south quickly, sometimes in less than a day, the temperature can be close to 8- 10℃, or even more. But after all, after the gale, the sun shines, the cold air mass degrades rapidly, and the temperature rises rapidly. The rise of temperature and the accumulation of heat prompted the next round of cold air to bring a strong cooling.

When there is no wind on a sunny day, there is always warm and comfortable "Xiaoyangchun" weather, which is not only very pleasant, but also very beneficial to the growth of winter crops. But at this time, the cold air in the north also has a strong force, often invading the south frequently, and sometimes it will form a cold wave weather with strong winds, cooling rain and snow.

There are more north winds and stronger winds in early winter. As the northwest, north China, northeast China and other places that have already entered winter, it can be said that the wind cooling at this time can be used to it. During the period from the south-central part of North China to Huanghuai and beginning of winter, cold air often blows away the red leaves in this mountainous area, or blows the trees in the city into bare poles, giving people a feeling of coming into winter immediately.

Beginning of winter lags behind the north and south, and the temperature difference widens. China has a vast territory, and the north and south span dozens of latitudes, so there is a temperature difference between the north and the south. However, after winter, the temperature difference between the north and the south widened. 1 1 In recent months, the average temperature in most parts of the Qinghai-Tibet Plateau, Inner Mongolia and northern Heilongjiang has reached about-10℃. The temperature difference between Mohe in the northernmost part and Haikou in Hainan Province can reach 30℃-50℃.

In the normal year of frost and fog in beginning of winter 165438+ 10, the first frost will appear one after another from the Qinling Mountains in the north, the western and southern parts of Huanghuai, and the southern and northern parts of Jiangnan. In the cold year165438+1mid-October, the first frost will also appear north of Nanling. 165438+ 10 In the north of October, as the front of cold air moved out of the field, the cold air mass behind the front began to change to the warmer side. If there is no follow-up cold air supplement, after a few days, although the temperature rises, the air quality gradually deteriorates.

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