Twenty-four solar terms: the temperature at the vernal equinox, is it still cold after the vernal equinox?

Whether it is cold after the vernal equinox depends on the region. Some places are warm in spring in bloom, and some places are chilly in spring.

During the spring equinox, the average daily temperature is generally below 10 ~ 12℃ (the standards in different regions are not consistent), and the temperature in most parts of the south continues to rise, but it is generally not as fast as the rainfall to the spring equinox. In late March, the average temperature in northern South China is mostly 13℃ to 15℃, and in southern South China it is mostly 15℃ to 16℃. Most of the plateau has been melted by snow, and the ten-day average temperature is about 5℃ to 10℃.

During the vernal equinox, the daily average temperature in all parts of China rose steadily to above 0℃ except the alpine mountain area and the area north of 45 north latitude. At this time, the cold has passed and the temperature has risen rapidly, especially in North China and Huanghuai Plain. The daily average temperature rises to above 10℃ almost at the same time as the rainy areas along the Yangtze River and the south of the Yangtze River, entering a bright spring.

On the vast land, on the bank of willow green, the grass grows in Fei Ying, the wheat is jointing, the rape blossoms are fragrant, the peach blossoms are red, and Li Bai is coming in spring. South China is a scene of late spring. According to the climate law, the precipitation in Jiangnan increased rapidly at this time, and it entered the period of "peach blossom flooding" in spring; In the northeast, north and northwest regions where "spring rain is as expensive as oil", precipitation is still very little, so resisting the threat of spring drought is the main problem of agricultural production. ?

On the vernal equinox, the sun shines almost directly on the equator of the earth, and the whole world is almost as long as day and night. After the vernal equinox, the direct point of the sun began to enter the northern hemisphere, and the days became longer and the nights became shorter in all parts of the northern hemisphere. The vernal equinox is an important solar term, which not only has astronomical significance: the northern and southern hemispheres are equally divided day and night, but also has obvious characteristics in climate.

On the occasion of the vernal equinox, China has entered a beautiful spring scenery except the Qinghai-Tibet Plateau, the northeast, the northwest and the northern part of North China. On the vast land, willows are green, Fei Ying grass grows, wheat jointing and rape blossoms are fragrant.