China enters "BBQ" mode, why is it so hot this summer?
He Lifu, chief forecaster of the Central Meteorological Observatory, analyzed the three major causes of rare high temperatures in various places in recent days
He Lifu said that the subtropical high pressure is the main system that affects summer weather. This year, not only did the subtropical high control the southern region for a long time, but the intensity of the subtropical high itself was also relatively strong. In addition, there were no strong typhoons to compete with the subtropical high, which resulted in relatively extreme high temperature weather in some places.
The reasons for this rare high temperature can be summarized into three points:
First of all, the plum rain period in the middle and lower reaches of the Yangtze River is shorter than in previous years, and the plum rain comes out earlier. The subtropical high pressure starts from July. It has continued to control the middle and lower reaches of the Yangtze River since the beginning of the month. Affected by the downdraft, the weather has been clear and cloudless, with strong solar radiation and high atmospheric humidity.
Secondly, the intensity of the subtropical high pressure is significantly stronger than during the same period in history. In previous years, the middle and lower reaches of the Yangtze River were still in the rainy season in early to mid-July, but this year due to the early onset of plum blossoms, there are obviously more high-temperature days, and the subtropical high pressure is relatively strong, causing the temperature to continue to rise.
Third, there are abnormalities in atmospheric circulation. As of now, there are almost no typhoons that go north and penetrate deep into the interior. In previous years, because typhoons made landfall, the subtropical high pressure would retreat and break under the influence of the typhoons, and the weather would also show hot spells, followed by a typhoon and rain, which is called intermittent high temperature.
This year’s typhoon affects the south, mainly in the Taiwan Strait and South China Sea, causing the subtropical high pressure to control the inland for a long time. Therefore, it is reasonable for the high temperature to suffer in the middle and lower reaches of the Yangtze River for a long time.
"Barbecue" mode
Shanghai: "Sizzling Bacon"
At around 1 pm on the 29th, a Shanghai TV reporter conducted an experiment in People's Square: Place a piece of pork belly on the marble floor. After 30 seconds, the side next to the floor will be white, and after 10 minutes, it will be medium rare.
At 12:54 on July 30, the reporter placed a piece of raw bacon in the pan and placed the pan on the road in the Xujiahui business district of Shanghai. It takes about 80 minutes to fry the raw bacon slices until they are medium-rare, and the ground temperature is always higher than 60°C during the entire process. On that day, according to the Shanghai Central Meteorological Observatory, the highest temperature in Shanghai reached 39°C.
Jiangsu: "Grilled fish on the road"
On July 29, in Zhenjiang, Jiangsu, a truck transporting fresh fish was damaged due to improper operation while connecting the Yangli Expressway and the Hurong Expressway. A car overturned on the Dantu Interchange on the highway, and 30,000 kilograms of lively fish scattered all over the ramp. The road was temporarily interrupted in one direction. Fortunately, no one was seriously injured. Unfortunately, because the temperature on the highway is too high, most of the fish are "roasted" as soon as you pick them up!
Hunan: Eggs hatch naturally
July 29 At noon, in Loudi City, Hunan Province, Ms. Ms. Xie quickly cracked open a few more eggs and found that they were all in the same situation. According to Ms. Xie, “It may be that the recent sustained high temperature weather has caused the room to become a natural incubator.”
"Eight Points of Attention" on hot days
Firstly, pay attention to taking effective protective measures when working outdoors. Do not expose your skin to the sun for a long time. It is best to bring cold drinks. ;
Second, be careful not to walk quickly in the sun.
After returning indoors from outside, do not turn on the air conditioner immediately;
Third, try to avoid traveling between 10 am and 4 pm, and replenish water before you feel thirsty;
Third, try to avoid traveling between 10 am and 4 pm. p>
Fourth, we must pay attention to food hygiene;
Fifth, we must pay attention to maintaining adequate sleep, living and working regularly;
Sixth, we must pay attention to care for special groups, especially For the elderly and children, hot days can easily induce cardiovascular and cerebrovascular diseases in the elderly and adverse symptoms in children;
Seven things to pay attention to to prevent the onset of solar dermatitis after exposure to the sun;
Eight things to do Pay attention to the symptoms of dizziness, nausea, dry mouth, confusion, chest tightness and shortness of breath. You should suspect that it is an early symptom of heat stroke. Take a rest immediately and drink some cold water to cool down. If the condition is serious, you should go to the hospital immediately for treatment
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