Why is there much rain in spring?

There is a lot of rain in spring. As the hot air begins to move northward,

Cold air often stays, and the temperatures of land, water and air rise at different speeds. In many parts of the earth, spring is the wettest season.

Generally, the rain in February and March is mostly due to the rain in the 24 solar terms of February 19. When the longitude of the sun reaches 330 degrees, the solar term begins. The solar terms of rain, westerly jet and the south branch of East Asia are obviously weakened, the adjustment and conversion period of long wave ridge is shortened, and the Mongolian high and Aleutian low are obviously weakened.

The weather process in the Jianghuai area has also changed significantly. Before and after the influence of cold air, the temperature changes greatly, cold and warm air masses meet, and even rain and snow weather occurs.