What is the meaning of the Rain Water solar term? What is the significance of the Rain Water solar term?

What is the meaning of the Rain Water solar term? What is the significance of the Rain Water solar term?
Rain Water is the second solar term among the 24 solar terms. The weather begins to warm up and the rainfall gradually increases, which means the beginning of meteorological spring. So, what is the meaning of the Rain Water solar term? What is the significance of the Rain Water solar term? Shuimoxiansheng.com has carefully compiled detailed information about the first month of the lunar calendar in 2019. If you want to know the auspicious and inauspicious days in the first month of the lunar calendar, just visit Shuimoxiansheng.com.

The meaning of Rain Water solar term:

Rainwater is the second solar term among the 24 solar terms. Around the fifteenth day of the first lunar month every year (February 18-20 in the Gregorian calendar), when the sun's ecliptic longitude reaches 330 degrees, it is the Rain Water of the twenty-four solar terms. At this time, the temperature rises, the ice and snow melt, and the precipitation increases, so it is named Rainwater. The Rain Water solar term generally starts on February 18 or 19 of the Gregorian calendar and ends on March 4 or 5. Rainwater, like Grain Rain, Light Snow and Heavy Snow, is a solar term that reflects precipitation phenomena.
"Collected Explanations of the 72 Seasonal Changes" states: "In the middle of the first month, heaven produces water. The beginning of spring belongs to wood, but what produces wood must be water, so the Rain Water follows the Beginning of Spring. And when the east wind thaws the ice, it dissipates and turns into rain." This means that around the Rain Water solar term, all things begin to sprout and spring is about to arrive. For example, the "Book of Yi Zhou" records the phenological phenomena such as "the arrival of wild geese" and "the sprouting of grass and trees" after the Rain Water Festival.

What are the requirements for the Rain Water solar term?

During the Rain Water solar term, the southern branch of the westerly jet stream in East Asia significantly weakened, the adjustment and conversion period of the long-wave trough and ridge became shorter, and the Mongolian high pressure and the Aleutian low pressure significantly weakened. The prevailing weather process in the Jianghuai region has also changed significantly. Before and after the impact of the cold air, the temperature fluctuation range has increased. When the cold and warm air masses converge, continuous rain and snow weather will occur.
There are weather proverbs about Rain Water that predict the later weather based on rain and snow, such as "If it rains in Rain Water, it will be cloudy" and "If it rains in Rain Water, it will be cloudy until Grain Rain". There are predictions of the later weather based on the temperature of the weather, such as "cold rain, warm Jingzhe" or "warm rain, cold Jingzhe". There are also predictions of later weather based on wind, such as "When the east wind rises during the Rain Water period, there will be rain in the dog days of summer" and so on.
The weather characteristics of the Rain Water solar term have a great influence on the growth of overwintering crops. An agricultural proverb says, "If it rains during the Rain Water solar term, the crops will grow well; the spring and the summer are a treasure." Rural areas should, based on weather characteristics, carry out inter-row cultivation, weeding and fertilization for wheat and other crops, clear ditches and bury embankments, and make preparations for drainage and waterlogging prevention.

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