Analysis of climatic characteristics of 24 solar terms

Scare is the third of the twenty-four solar terms, in early March. It is the time when spring is blooming, the grass is lush, the birds are singing and the flowers are fragrant, and the earth is reviving. Many people will pay attention to the climate in Skalling these days, especially some farmers are more concerned about the climate characteristics in Skalling.

Then, let's take a look at the climate characteristics of this day with me!

Surprisingly, the ancient name Tanabata is the third of the 24 solar terms and the beginning of the official calendar Uzuki. The time is around the first day of the second month of the lunar calendar (between March 5 and 6 of the Gregorian calendar), when the sun reaches 345 degrees of the yellow meridian.

In most areas, the average temperature of scary solar terms is generally 12℃ to 14℃, which is more than 3℃ higher than rainy solar terms, and it is the solar term with the fastest annual warming. The sunshine time has also increased significantly. However, due to the alternation of cold and warm air, the weather is unstable and the temperature fluctuates greatly. In the valley area of southeastern South China, the temperature in the warning period is stable above 65438 02℃ in most years, which is beneficial to the sowing of rice and corn. The average daily temperature in other areas is lower than 12℃ for more than three consecutive days, so it is not allowed to sow blindly early.

Although the temperature rises rapidly, the increase of rainfall is limited. The total rainfall in central and northwest South China is only about 10 mm, and spring drought often begins after winter drought all the year round. At this time, the booting stage of wheat and flowering stage of rape are in a period of high water demand and are sensitive to water demand. Spring drought often becomes an important factor affecting the output of Koharu. Afforestation should also consider this climate feature, plant logistics and water, and strive to improve the survival rate of saplings.

Reflecting the awakening of natural phenology, it refers to the sudden movement of spring thunder, which awakens the animals dormant in the soil and hibernating. At this time, the temperature rose rapidly, and spring thunder gradually appeared in most areas of the Yangtze River Basin. In most parts of southern China, the first sound of spring thunder can also be heard in the perennial rain and stormy waves; In the northwest of South China, except for a few years, it usually doesn't thunder until Tomb-Sweeping Day, which is the latest area where thunderstorms start in most parts of South China.