When is the rainy season on 20 19? What causes the rainy season?

Meiyu is a unique weather phenomenon in the middle and lower reaches of the Yangtze River, with frequent rainfall. When the rainy weather is over, midsummer will officially come. Then do you know when the rainy season is 20 19?

When is the rainy season on 20 19? It is expected to be in June and July of 20 19.

Meiyu season is a warm and humid air flow in the Pacific Ocean brought by the southeast monsoon in June and July every year, which passes through the middle and lower reaches of the Yangtze River in China, Taiwan Province Province, south-central Japan and south Korea. Because it is now the mature period of plums in Jiangnan, it is called Meiyu season. Note: At present, the academic circles believe that the East Asian summer monsoon started from the South China Sea summer monsoon (in late May on average) and belongs to the category of tropical southwest monsoon. The South China Sea summer monsoon gradually strengthens and moves northward, and moves northward to the middle and lower reaches of the Yangtze River during the meiyu period, and merges with the subtropical southwest monsoon on the northwest side of the subtropical high to form the meiyu belt.

Meiyu mainly occurs in the middle and lower reaches of the Yangtze River in China and the southernmost part of Taiwan Province Province, Liaodong Peninsula, Korean Peninsula and south-central Japan in the subtropical monsoon climate zone. There is no plum rain in other parts of the world at the same latitude, and there is usually no obvious plum rain phenomenon in South China.

In rainy season, the air humidity is high, the temperature is high, and clothes are easy to get moldy, so some people call plum rain homophonic and moldy. After the rainy season, the weather began to be dominated by the Pacific subtropical high and officially entered the hot summer.

Reasons for the formation of Meiyu season

Due to the geographical distribution of the earth, in April and May every year, the cold air in the north goes south and the warm air near the equator goes north, which leads to the convergence of cold and warm air and forms a quasi-static front in South China. In late May, the scale of warm air became larger, and the quasi-static front moved slightly northward, forming a quasi-static front in Jianghuai, which was called Meiyu Peak. The hot air in the south carries a lot of water vapor, and when it meets the cold air in the north, it will produce a wide range of convection.

The rainy season usually begins in late June and gradually recedes in mid-July. Because this period is the mature season of plums in Jiangnan area, it is called the rainy season.