What does summer solstice mean? Is it summer? Is it summer solstice?

What does summer solstice mean? Is it summer?

This means that the hot summer is coming. According to "Zunxian Manuscript", "The sun arrives in the north, the days are long and the shadows are short, so it is called the summer solstice. Do your best. In other words, the name of the summer solstice only represents the solar terms of the summer solstice, which indicates that the hot summer is coming.

Is the summer solstice dog days?

The summer of solstice is not dog days.

The summer solstice indicates that the temperature begins to rise. As the summer solstice approaches, the heat absorbed by the earth from the sun gradually increases. As summer approaches, more heat is absorbed during the day than radiated at night, so the average temperature will rise slowly. The absorbed heat will reach the maximum in summer solstice, and then begin to decline, but the absorption rate of heat is still greater than the emissivity.

"Three volts" refers to the first, middle and last three volts, which is from mid-July to mid-August every year. After the summer solstice, although the days are getting shorter and the nights are getting longer, the days are longer than the nights in a day. Every day, the ground absorbs more heat than it emits, and the temperature near the ground is getting higher every day. During the "three volts" period, the heat absorbed by the ground is almost less than the heat emitted, and the weather is the hottest.

After that, the heat absorbed by the ground began to be less than the heat emitted by the ground, and the temperature gradually decreased. Therefore, the hottest time of the year generally appears in the "dog days" from the summer solstice.

Did it get hot after the summer solstice?

After the summer solstice, it will get hotter and hotter. From summer to the third watch in the future, we will enter the dog days, which will be the hottest time of the year.

The summer solstice is the longest day of the year in the northern hemisphere, which indicates that summer is coming. In the south of China, it takes about fourteen hours from sunrise to sunset. Although the summer solstice has the longest day and the highest sun angle, it is not the hottest time of the year. As the saying goes, "Hot days are in dog days", and the real hot weather is calculated by summer solstice and beginning of autumn. From mid-July to mid-August, the temperature is the highest in all parts of China, and the highest temperature in some areas can reach about 40 degrees Celsius.

Characteristics of summer solstice:

1, high temperature, rainy

In the 7th century BC, the earliest summer solstice in 24 solar terms was determined by measuring the sun's shadow with civil soil gauge. Summer solstice, sunny, high temperature, rain, rainy season and dog days are also in summer solstice.

2. The days are long and the shadows are short.

The ancients said: the days are long, the shadows are short and extremely extreme, so it is called the summer solstice. On the day of the summer solstice, the sun goes directly to the northern hemisphere and reaches the northernmost point of the year, on the tropic of cancer (23 27' north latitude). On this day, the sun in the northern hemisphere has the largest altitude angle, the shortest shadow, the longest day and the shortest night. The farther north, the longer the days.

The summer solstice is the northernmost day of the sun in a year, the longest sunshine day in the northern hemisphere, and the longest day that lasts longer than the night. However, the long days in various places show a decreasing trend from north to south. This is because the days are long and the nights are short caused by the tilt of the earth's rotation axis, and the closer it is to the two levels, the more obvious it is.

On the solstice of summer, the sun will shine directly on the Tropic of Cancer. There are "peepholes" in the five signs of the Tropic of Cancer in Chinese mainland. When people can verify whether the sun shines vertically on the ground at noon on the summer solstice, there will be a spectacle of "standing upright without a shadow". You can watch it in Shantou, Conghua, Fengkai, Guiping and Mojiang respectively.