The difference between cold dew and white dew

The difference between "cold dew" and "white dew" is as follows:

1, different times

Cold dew comes from 10 every year 10 from July 7 to 9, and white dew comes from September 7 to 9 every year.

The climate is different.

Among the 24 solar terms, the explanation of cold dew is: "September solar terms, cold dew will condense." This means that during this period, the temperature is lower than that in the white dew, and the dew on the ground is colder and will soon condense into frost. When it is white dew, the temperature will not be too low, but at night, it will produce a lot of dew.

3. Weather and climate characteristics during cold dew:

The sudden drop in temperature is a feature of the 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. The difference of average temperature distribution is 10 month, and the regional difference of average temperature distribution in China is obvious.

The average temperature in most parts of South China is above 22℃, and it is even higher in Hainan, which is above 25℃, and it has not yet come out of summer. Jianghuai and Jiangnan are generally between 15℃ and 20℃, and the southeast, North China and Huanghuai are between 8- 16℃. At this time, the average temperature in parts of the northwest and north-central northeast has reached below 8℃. The average temperature in some plateau areas of Qinghai Province is even lower than 0℃.

4, the characteristics of the millennium climate:

Large cooling range

The biggest feature of the Millennium solar term climate is the large cooling range. The summer monsoon is gradually replaced by the winter monsoon, and the cold air goes south in batches, which brings a certain range of cooling, and the human body will feel more obvious.

It is rainy in the south.

In the Millennium, the precipitation in the north is obviously reduced and relatively dry; However, the rainfall in the middle and lower reaches of the Yangtze River has obviously increased, and sometimes it will form heavy rain or continuous low-temperature rain, which has a certain impact on autumn crops.