The three dog days are the hottest time of the year, generally divided into the first, the middle and the last. When does it start to enter the middle? Generally speaking, the time of the middle volt is different every year. It is understood that the time of the middle volt this year is on July 27, 2018. In the dog days, we must pay attention to prevent heatstroke.
Which day is zhongv 2018? Zhongv 2018 is from July 27, 2018 to August 15, 2018. 20 days in 2018.
The three dog days appear in the summer heat and the beginning of autumn, which is the day with the highest temperature, humid and sultry in the year. The so-called "dog days" refers to the "three dog days" of the lunar calendar, which is the hottest period of the year.
It can be understood that "Fu" means that the weather is too hot to move. But the reason why it is called "Fu" is that there are many cold factors.
Sanfu is the hottest 30 or 40 days of the year in Central China. Sanfu is calculated according to the lunar calendar, which is between the late July and the early August of the lunar calendar.
Analysis of climate and temperature in the dog days
First of all, as the surface humidity increases after the fall, the heat absorbed by the ground every day is more, the heat emitted is less, and the heat of the surface layer accumulates, so it gets hotter day by day. Entering the middle voltage, the heat accumulated on the ground reaches the highest value, and the weather is the hottest.
In addition, there is more rain in summer, and the air humidity is large. The heat capacity of water is much larger than that of dry air, which is also an important reason for the sultry weather in three rainy days. In July and August, the subtropical high pressure was strengthened. Under the control of the subtropical high, the downdraft inside the high pressure made the weather clear and cloudless, which was conducive to the sunshine, the ground radiation increased temperature, and the weather was even hotter.
After entering the final days, the weather is gradually cool. It's cooler in the morning and evening. It's still hot at noon. Each area will be different. Because the last fall is after the beginning of autumn, even the so-called "autumn tiger" is hot in the daytime and cool in the morning and evening.
What symptoms will appear in the dog days
1. With the rise of temperature, the weather is sultry and the air pressure is low, which is easy to cause symptoms such as chest tightness, shortness of breath, slow heart rate and so on. In serious cases, it may cause heart failure. Therefore, it is necessary to pay attention to rest and avoid staying up late.
2. In hot weather, people are often greedy for cold, often drink with cold, eat cold food, easy to lead to spleen and stomach weakness, so we can not ignore the regulation of spleen and stomach. Avoid cold diet, light diet, less salt and less spicy.
3. It is easy to cause heatstroke. In order to prevent heatstroke, it is suggested to drink mung bean soup and light salt water to relieve heatstroke and replenish water. Once heatstroke occurs, dizziness, headache, nausea and vomiting, etc., please see a doctor in time.
4. The weather is hot, people are easily upset, irritable and unhealthy. We should arrange work reasonably, pay attention to the combination of work and rest, avoid exposure to the sun, pay attention to adequate sleep and pay attention to food hygiene.