Is the summer solstice the hottest day of the year? No, the summer solstice is not the hottest day of the year. It should be in the dog days.
The main reason is the role of the atmosphere. The atmosphere has a strong heat preservation effect. If there is no atmosphere, after the summer solstice, the sunshine time in the northern hemisphere will be shortened day by day, the heat received will be less and the heat lost will be more and more, and the temperature will drop day by day. However, due to the thermal insulation of the atmosphere, the total sunshine time is longer than the dark time in a day, that is to say, the total heat receiving time is longer than the heat dissipation time, so the temperature will continue to rise under the thermal insulation of the atmosphere.
Climatic characteristics of summer solstice solar terms 1, convective weather
After the summer solstice, the ground is heated strongly, and the air convection is strong, and thunderstorms are often easy to form in the afternoon to evening. This kind of hot thunderstorm suddenly comes and goes, and the rainfall range is small. People call it summer rain across the ridge. Liu Yuxi, a poet in the Tang Dynasty, once skillfully used this kind of weather to write a famous poem: Sunrise in the east and rain in the west, the Tao is sunny but sunny. The heavy precipitation brought by convective weather is not all as beautiful as described in the poem, and often brings local disasters. In the poem "Summer Rain", the poet Xu Shuxin also described the thunderstorm weather in summer appropriately: sitting on the stage in the summer, frogs chirping and cicadas attacking the dust. The golden gong sounded like a thunderbolt, and the cold rain hit my face like money.
2. Rainstorm weather
In most cases, during the summer solstice, it is rainy in the middle and lower reaches of the Yangtze River and the Jianghuai Valley, and there are frequent rainstorms, which are easy to cause floods and even threaten people's lives and property. Attention should be paid to strengthening flood control.
3, Jianghuai Meiyu
The summer solstice season is the rainy season in the Jianghuai area. At this time, it is the yellow ripening period of plums in the south of the Yangtze River. The air is very humid. The cold and warm air masses meet here and form a trough of low pressure, which leads to rainy and continuous weather.
4. Hot weather
Like the winter solstice, the summer solstice is a solar term that reflects the change of four seasons. Astronomy stipulates that the summer solstice is the beginning of summer in the northern hemisphere. After the summer solstice, although the direct point of the sun began to move southward from the Tropic of Cancer, the daytime in the northern hemisphere began to shorten gradually. For the Tropic of Cancer and its northern area, the height of the sun began to decrease day by day, but because the heat radiated by the sun to the ground is still more than that radiated from the ground to the air, the temperature will continue to rise in the future, so there is a saying that the summer solstice is not too hot.