The vernal equinox is one of the 24 solar terms. When the vernal equinox comes, the time of day and night is the same. The equinox is on March 20 or so in the Gregorian calendar every year. What's the date of this year's equinox? Will it be cold after the equinox? Although the weather starts to get warmer slowly, it should be noted that the temperature difference between day and night in spring is relatively large, and there is a certain scientific basis for covering spring and freezing autumn.
Is it still cold after the spring equinox
After the vernal equinox, the temperature picks up, but it may still be cold in the late spring.
In the spring equinox, the northwest of China, the north of North China and the northeast of China are still in the transition stage from winter to spring. The weather is sunny and windy, with a sudden warm and cold. According to the statistics of dust weather in recent years, April is the most, March is the second, the spring equinox is 15 days, it is in the end of March to the beginning of April. In these areas, the wind blown sand, floating dust from high altitude, especially the pollution of dust storms to the atmosphere, are always concerned by the public and become a hot topic.
After the spring equinox, everything is recovering, and many flowers are blooming, and the temperature is rising. Generally, the temperature will be about ten degrees in late March, and the tie temperature will be about ten degrees. People will put on new clothes to welcome the warm spring.
What is the temperature after the vernal equinox
After the vernal equinox, the overwintering crops in most parts of China enter the spring growth stage. There is a saying in Central China that "spring equinox wheat is worth thousands of gold at a moment". The temperature continues to rise all over our province, but generally not as fast as the period from rain to the vernal equinox.
In the last ten days of March, the average temperature in the northern part of the basin is mostly from 13 ℃ to 15 ℃, and in the southern part of the basin is mostly from 15 ℃ to 16 ℃. Most parts of the plateau have been melting snow and melting ice. The average temperature in ten days is about 5 ℃ to 10 ℃. The temperature of Jinsha River, Anning River and other river valleys in the southwest of our province is the highest, with an average of 18 ℃ to 20 ℃. In addition to the marginal mountainous areas, the daily average temperature in the basin has risen steadily to more than 12 ℃ in seven to eight years, which is conducive to the sowing of rice, corn and other crops, and is also very suitable for afforestation. However, before and after the spring equinox, there is often a strong cold air intrusion in the basin, the temperature drops significantly, and the lowest temperature can be as low as 5 ℃. Sometimes a small stream of cold air comes one after another, forming a low temperature and Overcast Rain lasting for several days, which is harmful to agricultural production. According to this characteristic, we should make full use of the weather forecast, grasp the cold tail and warm head to sow seeds in time.
Is the equinox warm
Yes. In the spring equinox, the climate gradually warms. On this day, the sun can direct on the equator, and the day and night are almost the same. Then, the direct position of the sun gradually moves north, which starts to show that the day is long and the night is short. This is a very important solar term, and it is also very important in astronomy. There are obvious changes in the climate. Our weather gradually warms up, and people's activities also change More and more. In the spring equinox, except for the cold mountain area in winter and the area north of 45-deg; north latitude, the daily average temperature in all parts of China steadily rises above 0 ℃, the cold has passed away, and the temperature rises rapidly, especially in North China and the Huang Huai plain, the daily average temperature almost rises above 10 ℃ with the rainy area along the Yangtze River and the south of the Yangtze River, and enters the bright spring. In the vast land, willows are green on the bank, warblers are flying and grass are growing, wheat is jointing, rape is fragrant, peach is red, plum is white and spring is yellow. And South China is a scene of late spring. According to the climate law, the precipitation in the south of the Yangtze River increased rapidly and entered the "peach blossom flood" period in spring. In the northeast, North China and northwest areas where the "spring rain is as expensive as oil", the precipitation is still very little. The main problem in agricultural production is to resist the threat of spring drought.