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 day every year, which is the last solar term in spring. When Grain Rain comes, it means the end of the cold wave in spring. From the ancients? Rain over the valley? After the soil was soaked by the spring rain, the fertilizer in the soil 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 laws of people's natural movement in the dormitory, which were summarized by the ancients using their own wisdom and 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 the cold high pressure in Siberia often goes south, the weather in China often experiences cold wave and spring freezing. When the cold wave comes, the temperature drops suddenly, often accompanied by strong winds and other weather. I often feel the temperature rise suddenly. The temperature difference is particularly large. For example, before Grain Rain in China this year, the temperature in some areas was as high as 30 degrees, which is very abnormal in spring.

Secondly, in terms of rainfall. The Siberian cold air current in the North Pacific often goes south, and it often collides with the warm and humid air current from the Indian Ocean, and frontal rain often forms on the front. There will be strong winds, rain and other weather on one side of the front, so there is often a saying that there are many rains and spring rain is as expensive as oil during the Qingming period. The rain in front of Grain Rain is usually sunny and slow. Since ancient times, it has often been described as a drizzle in spring. 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 subtropical high rise occupy most of China. Under the dual control of the subtropical high pressure zone and the warm and humid air flow in the Indian Ocean, there will be plum rain in China, the temperature will rise, and lightning, strong wind and other weather conditions will often occur. Therefore, it is best to catch Grain Rain before and after. Spring sowing season is very important for farmers.