Introduction: The solar terms are one of the timekeeping calendars in our country's ancient times. Its existence has played a certain role in promoting the development of farming. Different solar terms represent different climate changes, and therefore the weather characteristics they bring are also different. So when is the Beginning of Autumn in 2017? What are the climatic characteristics of the Chushu solar term? Let’s follow the editor to find out. Mr. Shui Mo has carefully compiled a special topic about the seventh month of the lunar calendar. Friends who want to know more about the seventh month of the lunar calendar can read the relevant articles in this topic for reference!When is the Beginning of Heat in 2017?The time of End of Heat in 2017 (06:20, August 23, 2017 - 18:38, September 7, 2017) Gregorian calendar time: August 23, 2017 6:20:09 Lunar calendar date: Wednesday, the second day of the seventh lunar month The arrival of the End of Heat solar term means that my country has entered autumn in meteorological terms. At this time, the sun reaches 150 degrees of ecliptic longitude, just near the star Regulus in the Leo constellation. When you observe the Big Dipper at night, the curved handle of the dipper still points to "Shen" (southwest).What are the climatic characteristics of the Chushu solar term?Temperatures in the north dropped significantlyIt is not enough to describe the Chushu solar term from the end of August to the beginning of September as a time when the temperature starts to drop. Cooling temperatures are just one of the symptoms. The reasons behind this phenomenon are, first of all, that the sun's direct point continues to move southward and solar radiation weakens; second, the subtropical high pressure retreats southward in leaps and bounds, and the Mongolian cold high pressure begins to show its edge by punching and kicking. But whenever cold air affects our country, if the air is dry, it often brings windy weather. If there is warm and humid air flow in the atmosphere, it often forms a decent autumn rain. After every storm, especially after rain, people will feel a significant drop in temperature. Hence, there is a saying: “One autumn rain (wind) brings one cold weather.” There is also the possibility of heavy precipitation in the Jianghuai region in the southern part of the north. The temperature drops significantly, the temperature difference between day and night increases, and the sun is bright in the sky after the rain. People are often not very adapted to the changes in temperature between summer and autumn. If they are not careful, they can easily develop respiratory tract diseases, gastroenteritis, colds and other diseases, hence the saying "Autumn of Troubles". The South Feels the "Autumn Tiger" Although the subtropical high pressure that dominates the summer is retreating southward in large strides, it will never easily give up its dominance and retreat to the sea in the western Pacific Ocean. In the southern regions controlled by it, people who have just felt a hint of autumn cool often feel the high temperatures again at the end of the Beginning of Autumn. This is the true "autumn tiger". If the "autumn tiger" continues to appear after the "end of the dog days", it is often easy to cause consecutive droughts in summer and autumn, which will greatly advance the autumn fire prevention period, so we need to be vigilant. South China, Southwest China, and West China - Thunderstorm activities are more frequent. In September, thunderstorm activities are not as active as those in the hot summer, but there are still many thunderstorm activities in South China, Southwest China, and West China. In South China, the warm and humid air currents at low latitudes are still relatively active, so there are more thunderstorms than in other places; while in the southwest and west China, because they are located on the edge of the subtropical high pressure and are affected by the mountains, there are also more thunderstorms. Autumn Rain in Western China <br /> In September, most of China began to enter a period of less rainfall, while Western China had more autumn rain. It is a special weather phenomenon in autumn in western my country. The scope of autumn rain in western China, in addition to the Weishui and Hanshui basins, also includes the autumn rain occurring in Sichuan, most of Guizhou, eastern Yunnan, western Hunan, and western Hubei. In years with early autumn rains, it can appear in late August. The earliest appearance date can sometimes start in late August and end in late November. But the main rainfall period occurs in September and October. The main feature of "Huaxi Autumn Rain" is the many rainy days, while the other feature is mainly drizzle. Therefore, although there are many rainy days, the rainfall is not very large, generally less than in summer, and the intensity is also weaker. Summary: Through the above article, we have learned about the date of the Beginning of Heat in 2017 and the climatic characteristics of the Beginning of Heat. We hope it can provide a reference for friends in need! |
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