Grain Rain solar term is coming. What are the weather features around Grain Rain today?

Grain Rain is from April 19 to April 2 1 every year, and Grain Rain is the last solar term in spring. The arrival of Grain Rain means the end of the cold wave in spring. From the ancients? Rain over the valley? After the soil has been infiltrated by spring rain, the fertilizer in the soil has reached a very rich level. If crops are planted at this time, they will grow very easily, so Grain Rain was regarded as a symbol of busy farming season in ancient times.

At this time, the temperature began to rise and plants began to grow. Before and after Grain Rain, people generally began to carry out spring sowing. Therefore, Grain Rain also observed the law of people's natural operation in the dormitory, which was summed up by the ancients using their own wisdom according to the weather conditions before and after Grain Rain. So before and after Grain Rain. What are the characteristics of our weather?

First of all, in terms of temperature, before Grain Rain, the temperature was unstable, sometimes high and sometimes low. Because Siberian cold high often goes south, the weather in China often experiences cold wave and spring cold. When the cold wave comes, the temperature drops suddenly, often accompanied by strong winds and other weather. I often feel that the temperature rises suddenly. The temperature difference is particularly large. For example, before Grain Rain this year, the temperature in some areas was as high as 30 degrees, which was very abnormal in spring.

Secondly, in terms of rainfall. The Siberian cold air flow in the North Pacific often goes south and often collides with the warm and humid air flow from the Indian Ocean, and frontal rain often forms on the contact front. There will be strong winds and rains on the front side, so there is often a saying that there are many rains in Qingming Festival and spring rain is as expensive as oil. The rain before Grain Rain is usually sunny and slow. Since ancient times, it has often been described as a drizzle in spring by ox hair. After Grain Rain, the Siberian high retreated to the north of the Arctic Circle. The warm and humid air flow in the Indian Ocean and the rise of subtropical high occupy most parts of China. Under the dual control of the subtropical high and the warm and humid air flow in the Indian Ocean, there will be plum rains, rising temperatures and frequent weather conditions such as thunder and lightning and strong winds in China. Therefore, it is best to catch Grain Rain before and after. Spring sowing season is very important for farmers.