Traditional Culture Encyclopedia - The 24 Solar Terms - An Introduction to the Characteristics of Solar Terms in beginning of winter (202 1 Solar Terms from Winter to Sun)
An Introduction to the Characteristics of Solar Terms in beginning of winter (202 1 Solar Terms from Winter to Sun)
According to statistics, there are 2-3 tropical cyclones in June165438+1October every year. In particular, cyclones generated in the northwest Pacific may develop into typhoon intensity. In the past 55 years, there have been 1 1 tropical cyclones landing in China's coastal areas in1month, mainly in Taiwan Province Province, Guangdong Province and Hainan Province. If zonal circulation prevails in mid-latitude, tropical cyclones are more active, and if meridional circulation prevails in mid-latitude, that is, cold air is stronger, typhoons are not easy to occur.
2. South and North China, autumn and summer.
In northern South China during beginning of winter, even if the cold wind sweeps away, the temperature will rise rapidly. When there is no wind on a sunny day, it is often said that "October is sunny and there is no wind to warm". It is often winter here in 65438+February.
South China, Taiwan Province Province and Hainan Island to the south, 165438+ 10 has not yet entered winter. However, the temperature in June 5438+065438+ 10 is not very high, and the highest temperature is generally below 30℃. In addition, it is not excluded that there is a strong cooling due to the influence of strong cold air, but it is rare in recent years.
3, winter and late autumn, prone to frost and fog.
In normal years165438+1early October, frost will appear one after another from the Qinling Mountains in the north, the western and southern parts of Huanghuai, and the northern part of Jiangnan in the south. In the cold year165438+1mid-October, the first frost will also appear north of Nanling.
165438+ 10 In the north of October, as the front of cold air moved out of the field, the cold air mass behind the front began to change to the warmer side. If there is no follow-up cold air supplement, after a few days, although the temperature rises, the air quality gradually deteriorates. Especially in big cities, the water vapor accumulated in the atmosphere combines with pollution particles to form smog or dense fog, which affects people's health and traffic operation. Water vapor conditions in the southwest and south are better than those in the north. If the temperature is low in the morning, there are often patches of fog.
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