What are the characteristics of solar terms in beginning of autumn?

Beginning of autumn solar terms represent the beginning of summer and autumn among the 20 solar terms. At present, the climate is still relatively hot, and entering the autumn climate is also a gradual process. Therefore, the heatstroke prevention work in beginning of autumn season cannot be relaxed. So what are the characteristics of solar terms in beginning of autumn? Let's use the old calendar to have a look!

Climatic characteristics of beginning of autumn

From this day on, autumn began, and autumn was crisp. Since then, the temperature has gradually decreased from the hottest time.

Beginning of autumn has arrived, but it's not autumn yet. The division of climatic seasons should be based on the "climatic average temperature", that is, the local average temperature is lower than 22℃ for five consecutive days, which is the real autumn season. China is a vast country. Although the climate varies from place to place, most areas have not yet entered the autumn climate, and the last days of dog days are still the third day after beginning of autumn. Especially in the southern part of China, this solar term is still hot in summer. At the same time, because the typhoon and rainy season are about to pass, and the temperature is even hotter, China medicine calls the period from beginning of autumn to the autumnal equinox "long summer".

The earliest areas are in Qiu Lai, Heilongjiang and northern Xinjiang, and will also fall in mid-August. In general, the autumn wind in the capital Beijing will be cool in early September, and the autumn around Qinhuai will begin in mid-September. In early June165438+1October, the autumn wind will blow to Lishui, Zhejiang, Nanchang, Jiangxi and Hengyang, Hunan, and the news of autumn will spread to Leizhou Peninsula, and the footsteps of autumn will reach the "ends of the earth".

The beginning of autumn, the direction of astronomical changes.

The day when it was handed over to beginning of autumn was July of the lunar calendar, and July was also the "Day of Shen Yue". In beginning of autumn, the declination of the sun is+1619', which is more southerly than+23 26' from summer to sun, so the daylight time in Beijing is shortened to 14 hours and 04 minutes (15 hours from summer to sun). The weather is still very hot. There are still "crouching" after beginning of autumn, and "autumn tigers" still exist. Therefore, we should still pay attention to heatstroke prevention. However, the nature has changed. There are "beautiful days" that are hot at noon and cool in the morning and evening, and "one autumn rain is cold and ten autumn rains are frost."