Qingming Festival is not only one of the 24 solar terms, but also an important traditional festival in China. In this season, people will pay homage to the dead martyrs and relatives.
It turns out that there are three reasons for rain in this season:
The first is when cold air meets warm moisture.You product, Qingming Festival is just the time of spring recovery. The cold air from Siberia in the north and the summer monsoon from the Pacific Ocean are competing in the Yangtze River Basin, so it is easy to produce precipitation.
The second is moving with the point of direct sunlight.During this period, the sunshine in the northern hemisphere increased, and the subtropical high in the Western Pacific also strengthened. No, the southwest wind brought the warm and humid air from the ocean directly to the south, which made the water vapor content in the South increase all at once. Once encountering the cold air from the North to the south, it is easy to rain.
The third is that as the temperature rises in the south, the atmosphere becomes unstableAt this time, if there are some weather systems such as low-pressure cyclones passing by, it is easy to have the weather of continuous rain, even lightning and thunder.
Do you understand now? Although the rain during the Qingming Festival is not suitable for you to go out to play, it is very important for the farmer uncle, because farming is about to begin.
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Link to the original text:Popular science in China