What will happen to the climate during the summer solstice?

What are the climate changes during the Summer Solstice? What are the weather characteristics of the Summer Solstice

1. Frequent heavy rains

During the "Summer Solstice", it is the middle and lower reaches of the Yangtze River and the Yangtze-Huaihe River Basin. During the plum rains, heavy rains frequently occur, which can easily cause floods and even threaten people's lives and property. Attention should be paid to strengthening flood prevention work.

2. Jianghuai enters the plum rain season

The summer solstice is the "ume rain" season in the Jianghuai area. At this time, the plums in the south of the Yangtze River are in their yellow ripening period. The air is very humid, and there are cold and warm air masses. They meet here and form a trough of low pressure, causing rainy weather. In such weather, utensils become moldy and the human body feels uncomfortable. Some mosquitoes breed very quickly, and some intestinal bacteria can easily breed. At this time, you should pay attention to the hygiene of drinking water and try not to eat raw or cold food to prevent the occurrence and spread of infectious diseases.

3. The hot sauna day is coming

The summer solstice, like the winter solstice, is a solar term that reflects the change of the four seasons. According to astronomy, the summer solstice is the beginning of summer in the northern hemisphere. After the summer solstice, although the direct point of the sun gradually moves southward, the days in the northern hemisphere are getting shorter and the nights are getting longer. However, since the heat radiated from the sun to the ground is still more than the ground emitted into the air, the temperature will continue to rise in the coming period. Therefore, there is a saying that "the summer solstice is not hot". Judging from the data from 1951 to 2006, the historical extreme values ??of many northern cities occurred after the summer solstice.

4. Convection weather is active

After the summer solstice, the ground is heated intensely and air convection is strong. Thunderstorms are often formed from afternoon to evening. This kind of hot thunderstorm comes and goes quickly, and the rainfall range is small. People call it "summer rain across Tiankan". Liu Yuxi, a poet of the Tang Dynasty, once cleverly used this kind of weather metaphor to write a famous poem: "The sun rises in the east and rains in the west. There is sunshine but there is no sunshine on the road." The heavy rainfall caused by convective weather is not always as beautiful as described in the poem, and often brings local disasters. The poet Xu Shuxin also gave an apt description of the summer thunderstorm weather in his poem "In the Summer Rain": "In summer, the wind blows and the summer heat rises, and the frogs croak and the cicadas hit the dust. _The sky thunders, the golden gongs ring, and the cold rain is like money. Come on."

5. The summer solstice is not the hottest period

On the day of the summer solstice, the northern hemisphere does receive the most heat from the sun, but in the dozens of days after the summer solstice, although The sun's position is not the highest, but it is still quite high; the sunshine is not the longest, but it is still quite long. The heat received every day exceeds the heat lost, so the daily average temperature continues to rise, reaching its highest level in the dog days of summer.

Only when the sun is "low" enough that it receives less heat than it loses every day, does the temperature begin to decrease. Similarly, after the winter solstice, although the sunshine gradually increases, the heat received every day is not enough to make up for the lost heat. This is why although the sun is directly exposed to the sun at 12 noon every day, the hottest time of the day is around 2 p.m.