What does cold dew mean? Introduction to the origin of 202 1 cold dew.

1, the temperature is low, there is condensation in the air, and there is a chill gradually. The cold dew solar term began at the end of the first ten days of 10, and the direct sunlight point in the southern hemisphere continued to move southward, and the sunlight irradiation angle in the northern hemisphere began to tilt obviously, and the solar heat received by the ground was significantly reduced compared with that in summer. The influence of cold air's sphere of influence can sometimes extend to South China.

2. There is a Guangdong proverb: "After three dynasties of cold dew, you need to find a bridge after crossing the water", which means that the weather is getting cold, but you can't wade across the river or the fields barefoot as before. It can be seen that during the cold dew period, people can obviously feel the seasonal changes. More regions and more people began to use the word "cold" to express their feelings about the weather.

If the "White Dew" solar term marks the change from hot to cold, then the summer heat has not completely disappeared, and crystal dew can still be seen in the morning. Then the "cold dew" solar term is a symbol of cold weather, marking the transition from cool to cold. The dew is cold and radiant. As the saying goes, "cold dew cold, Coody Leng everywhere dew".

4. The sudden drop of temperature is a feature of cold dew solar terms. It is common for the temperature to drop by 8℃ and 10℃ after the autumn rain brought by a strong cold air. However, most stormy weather does not last long (except West China). Controlled by cold and high pressure, it is warm during the day, cool at night and crisp in autumn during the day.

5. "Twenty-four solar terms" said: "September solar terms, when the dew is cold, it will condense." Cold dew means that the temperature is lower than that of the white dew, and the dew on the ground is colder and will soon condense into frost. Cold dew is a sign that the weather is getting colder and colder, and it also means the official start of the autumn season.