What is the solar term after the shock? Will it be cold after the fright?

What is the solar term after the shock? Will it be cold after the fright?

After the shock, it is the spring equinox solar terms.

The next solar term after the shocking solar term is the vernal equinox, which is the midpoint of 90 days in spring. One of the 24 solar terms, around March 20 of the Gregorian calendar every year, when the sun is located at 0 (vernal equinox) of the yellow meridian. On the vernal equinox, the sun shines directly at the equator of the earth, and the seasons in the northern and southern hemispheres are opposite. The northern hemisphere is the vernal equinox and the southern hemisphere is the autumnal equinox.

The vernal equinox usually refers to the moment when the sun's longitude is 0, and also refers to the position of the sun between 0 and 15, that is, the period from the vernal equinox to Tomb-Sweeping Day, and the Gregorian calendar is about March 20th to April 5th.

During the vernal equinox, the northwest, the northern part of North China and most of the northeast are still in the transitional stage from winter to spring, with sunny and windy days, and it is warm and cold at first sight. According to the statistics of dusty weather in recent years, April is the most frequent, followed by March, and the vernal equinox is 15 days, that is, from the end of March to the beginning of April. In these areas, sand blown by strong winds and floating dust at high altitude, especially sandstorms, have caused air pollution.

At the vernal equinox, cold air constantly invades the south of China, and there will be cold weather in spring with low temperature. At this time, the continuous rain will have a great impact on crops. In early spring, the temperature rises quickly, and then it stays low for a while. This weather phenomenon is called late spring cold.

Will it be cold after the fright?

Under normal circumstances, the temperature will rise rapidly after being frightened, but if there is continuous cold air intrusion throughout the year, there will still be late spring cold, so it is not advisable to change into thin clothes quickly after being frightened.

The average temperature in most parts of the country has risen above 0℃ except the northeast and northwest regions, the daily average temperature in North China is 3-6℃, along the Yangtze River and south China is above 8℃, and the southwest and south China have reached 10- 15℃, which has been a harmonious spring.

This solar term is not only the solar term with the fastest temperature rise in a year, but also the duration of sunshine has obviously increased. Everyone will sigh that this is a "good spring". However, before and after the solar terms, cold and warm air alternated, the weather was not particularly stable, and the temperature fluctuated greatly. Don't rush to take off heavy clothes or "cover" them for a few days.

Climatic characteristics of fear

1, spring thunder

Spring thunder often refers to the first thunder in a year. Spring thunder rings and spring returns to the earth. It is the product of cold and warm air meeting, atmospheric instability and convective weather. Farmer friends are very concerned about the time when the spring thunder first sounded. If the first thunder sounds on the day of thunder, you will think that the crops will be in good weather that year; If the first thunder before the fright, it means that there was more rain in that year, and there may be "continuous spring rain"; On the contrary, there may be drought.

2. cold spring

During the period of fright, it was warm and cold, and farmers in the south were most worried about "low temperature and rainy weather". At this time, warm crops such as early rice and cotton in South China and South Jiangnan began to sow and raise seedlings. In low temperature and rainy weather with average daily temperature ≤ 10℃ for three consecutive days or more, insufficient light will cause early rice to rot; This kind of weather is also extremely unfavorable to the sowing and management of rape, cotton and corn; It is also very harmful to jointing growth of winter wheat.

3. Spring drought

The northern land began to plow in spring, and people were most worried about the spring drought caused by too little rain. The north is known as "spring rain is as expensive as oil" and "spring drought in nine years". At this time, there are still snowflakes falling in the north, but for the relatively dry northwest and northeast, the snow at this time is very conducive to the increase of soil moisture. If there is decent rain and snow, it is very beneficial to spring sowing production and winter wheat turning green as soon as possible. During this period of time in North China, even if there is snow, it often appears in the form of sleet, and it often falls to the ground in the form of rain.