Twenty -four solar terms · Summer Solstice ｜ Summer solstice has become stronger in summer

Tianshan News (Reporter Yu Mengfan reported) On June 21, we ushered in the summer solstice solar terms in the twenty -four solar terms. For the northern hemisphere in Xinjiang, the summer solstice is the longest day in the year. The summer solstice has arrived, the day is the longest, and the summer heat is getting stronger.

"The north to the north, the sun is long, the sun shadow is short, so the summer solstice is said. The longest, the longer the day to the north. Although the summer solstice is the longest day, it is not when the weather is the hottest in the year.

This is because before the summer solstice, the ground has accumulated sufficient heat of solar radiation, and the heat emitting takes a time process. Shortly after the summer solstice, the heat accumulated in the early stage is still more than the calories that emit. Therefore, for a period of time after the summer solstice, the temperature continues to rise.

From the summer solstice on this day, it will be counted as the summer solstice season, and the summer solstice is the process of early summer to midsummer. During this time, the number of days with the highest temperature of the daily daily temperature in Xinjiang began to increase, and precipitation began to increase. As the saying goes, "heat in three volts", from mid -July to mid -August is the hottest period of the whole summer of Xinjiang.

For Urumqi, the summer solstice is the largest period of temperature difference in the year. In the absence of strong heating balls or obvious cold air disturbances, the highest daily temperature is about 30 ° C, the lowest temperature is about 18 ° C, and the temperature difference is above 10 ° C to above. If there is a rainfall temperature, the temperature will rise quickly when the rain stops.

In the summer solstice, we can also observe an interesting phenomenon: sometimes there is a thunderstorm from afternoon to the evening, but the range of rain is not large and the distribution is uneven. Sometimes the city is sunny in the south of the city. Essence

This is due to the strong heat of the ground in the summer and the air convection. If there is a weak and cold air disturbing in the afternoon to the evening, the cold and cold air will often trigger the formation of strong convection weather, and thunder lightning and rain appear. This kind of thunderbolt comes quickly, so the folk also refers to this small -scale rainfall as "summer rain separated fields." It means that the rain in summer is often shower, and the area of ​​the area is limited, and even only a field is separated.

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