Traditional Culture Encyclopedia - The 24 Solar Terms - What is Huangmeitian?
What is Huangmeitian?
In China, the middle and lower reaches of the Yangtze River, Taiwan Province Province, south-central Japan and south Korea, continuous rainy weather occurs in June and July every year. Because it is the mature period of plums in Jiangnan, it is called "Meiyu", and this period is called Meiyu season.
In early summer, it was rainy for a long time in Jianghuai Basin. At this time, the utensils are easy to mold, so it is also called "mildew rain", referred to as "mildew rain"; Because of its yellow maturity, it is also called "Plum Rain" or "Huang Meiyu". After mid-June, the rain belt will stay in the Jianghuai basin, which is Meiyu.
Formation conditions of Huangmeitian:
1. There is blocking high pressure or stable high pressure ridge in the middle troposphere in high latitudes of Asia, and the atmospheric circulation is relatively stable with little change.
2. The westerly circulation in the mid-latitude area is gentle, and frequent short-wave activities provide cold air conditions for the Jianghuai area.
3. The western Pacific subtropical high has an obvious process of extending westward and jumping northward. The ridge line of the 500 hPa subtropical high is stable between 20 and 25 degrees north latitude, and the warm and humid air flow is transported from the edge of the subtropical high to the Jianghuai Basin.
Reference to the above content: Baidu Encyclopedia-Huangmeitian (Meiyu)
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