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Baby chick tests you: Which season is summer usually in autumn and summer?

Summer is usually in autumn.

Introduction to summer heat:

It is the fourteenth solar term among the twenty-four solar terms and the second solar term in autumn. Dou Zhiwu (Southwest); The solar meridian reaches150; August 22-24 of the Gregorian calendar every year. Summer has arrived, which is the "last summer" in the "three summers" of hot and hot weather, which means that the hot and difficult weather is coming to an end.

After the summer heat, the direct point of the sun continued to move southward, the solar radiation weakened, the subtropical high retreated southward, and the summer heat gradually disappeared. Thunderstorm activity is not as active as summer, and the general trend of rainstorm in all parts of the country is weakened. There are many folk activities in summer, such as eating ducks, setting off river lanterns, opening fishing festivals, decocting medicinal tea and offering sacrifices to the land.

Meteorological changes:

In summer, that is, "out of summer", the high temperature will gradually withdraw. After the summer heat, the direct point of the sun continued to move southward, the solar radiation weakened, and the subtropical high retreated southward. As the height of the sun decreases, the heat it brings also decreases.

The arrival of summer means that the hot and difficult weather is over. During this period, the weather is still hot, but it has shown a downward trend. The disappearance of summer heat is a slow process. It doesn't mean that it gets cold immediately after the heat drops in summer. Generally, coolness will begin after the Millennium.

After summer, the temperature gradually decreases and the temperature difference between day and night gradually increases, but the temperature is still high during the day. The reasons for this phenomenon are as follows: first, the direct point of the sun continues to move southward, and the solar radiation weakens; Second, the subtropical high moved southward by leaps and bounds, and the Mongolian cold high began to itch to try.

After the summer solstice solar terms, although the subtropical high strode south, it would never give up its dominant position easily and easily retreat into the sea of the western Pacific. In the southern region under its control, it is often late summer, and it feels hot weather. This is the short-term regenerative weather "autumn tiger".

The duration of autumn tigers varies from year to year, usually lasting from half a month to two months. The reason for the formation of the autumn tiger is that the western Pacific subtropical high that controls China in autumn gradually moves southward, but then moves northward. Controlled by subtropical high, it is cloudy locally, cloudy between sunny days, strong sunshine and rising temperature.