He Lifu said that subtropical high is the main system that affects summer weather. This year, not only has the subtropical high controlled the southern region for a long time, but the intensity of the subtropical high itself is also strong. In addition, there is no strong typhoon to confront the subtropical high, which makes extreme high temperature weather appear in some places.
The causes of this rare high temperature can be summarized into three points:
First of all, the rainy season in the middle and lower reaches of the Yangtze River is shorter than that in previous years, and the plum blossoms come out earlier. The subtropical high has been continuously controlling the middle and lower reaches of the Yangtze River since early July. Influenced by downward flow, the weather is sunny and partly cloudy, the solar radiation is strong and the atmospheric humidity is high.
Secondly, the intensity of subtropical high is obviously stronger than that of the same period in history. Last year, the middle and lower reaches of the Yangtze River were still in the rainy season in the first half of July, but this year, due to the early plum blossom, the number of high temperature days was obviously on the high side, and the subtropical high was relatively strong, which led to the continuous rise of temperature.
Third, the anomaly of atmospheric circulation. Up to now, there are almost no typhoons going northward and going inland. In previous years, because of the typhoon landing, the subtropical high will retreat and break under the influence of the typhoon, and the weather also presents a weather situation in which it is hot for a while and a typhoon comes and cools down, which is called intermittent high temperature.
This year, the typhoon affected the south, mainly in the Taiwan Province Strait and the South China Sea, which caused the subtropical high to control the inland for a long time. Therefore, it is reasonable for the middle and lower reaches of the Yangtze River to suffer from high temperature for a long time.
"barbecue" mode
Shanghai: "Iron Bacon"
At about 1 p.m. on the afternoon of 29th, a reporter from Shanghai TV Station did an experiment in People's Square: put a piece of pork belly on the marble floor, and the side on the ground turned white after 30 seconds, and it was eight minutes ripe after 10 minutes.
At 2: 54 on July 30/kloc-0, the reporter put a piece of raw bacon in the pan and placed the pan on the road in Shanghai Xujiahui business district. It takes about 80 minutes to fry raw bacon slices until they are medium-cooked, and the ground temperature has been higher than 60℃ during the whole process. On the same day, according to the Shanghai Central Meteorological Observatory, the highest temperature in Shanghai reached 39℃.
Jiangsu: "Grilled fish on the road"
On July 29th, in Zhenjiang, Jiangsu Province, a truck carrying fresh fish overturned in the Dantu Interchange connecting Yangli, expressway and Shanghai, Chengdu and expressway due to improper operation, and 30,000 kilograms of lively fish were scattered all over the road, which temporarily caused one-way interruption of the road. Fortunately, the personnel were not seriously injured. Unfortunately, due to the high temperature on the expressway, most of the fish are "baked" when they are picked up!
Hunan: Eggs hatch naturally
At noon on July 29th, in Loudi City, Hunan Province, Ms. Xie, who was cooking, cracked an egg. She found that the yolk was abnormal. When she looked at it, it turned out to be the embryonic form of a chicken. Ms. Xie quickly cracked a few eggs and found that they were all in the same situation. According to Ms. Xie, "it may be that the recent high temperature weather has caused the room to become a natural incubator." .
"Eight Points for Attention" in Hot Weather
First, we should pay attention to take effective protective measures when working outdoors, avoid naked skin drying in the sun for a long time, and it is best to bring cold drinks;
Second, be careful not to run in the sun. Do not turn on the air conditioner immediately after returning to the room from the outside;
Third, try to avoid traveling from 10 am to 4 pm, and replenish water before you are thirsty;
Fourth, pay attention to food hygiene;
Fifth, we should pay attention to maintaining adequate sleep and living and working regularly;
Sixth, we should pay attention to the care of special people, especially the elderly and children. High temperature days are easy to induce cardiovascular and cerebrovascular diseases in the elderly and bad symptoms in children.
Seventh, we should pay attention to prevent the onset of solar dermatitis after sun exposure;
Eight should pay attention to dizziness, nausea, dry mouth, confusion, chest tightness, shortness of breath and other symptoms, should be suspected to be early symptoms of heatstroke, immediately rest, drink some cold water to cool down, serious illness should be immediately treated in the hospital.
Relevant information and pictures are all from the Internet: through Baidu search.
Relevant reference sources are as follows:
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