How to treat the extremely hot weather of 40 degrees and above in Shanghai, setting a new record since the official meteorological record?
It is precisely because of this that the sea breeze deepened. Under the humidification of the boundary layer by the sea breeze and the convergence conditions provided by sea breeze front, this year's high
There is no lack of strong convection in the temperature process, and because the atmosphere is very unstable in extremely high temperature weather, every convection is weak.
Where to go. Take yesterday as an example. After the temperature rose to 40.6 degrees yesterday, it ushered in strong convective weather, and there was a short-term heavy drop in places such as Chuansha in Pudong.
Water and even hail, Yangpu also appeared a gust of 10. A joke is "boiling water", but it will really hurt normal students.
Production and life cause a lot of trouble.
First of all, in fact, let's deeply analyze the causes of this extreme high temperature process. Generally speaking, if it is the summer after La Nina, at the same time,
In the case of less snowfall on the Qinghai-Tibet Plateau, the subtropical high should quickly move northward, cross the Yangtze River basin, and transport heat to Huanghuai or even further north.
In this area. However, although the above two conditions have been met this year, the subtropical high has brought a very high level because of the immobility of the Yangtze River basin.
Warm. In fact, this has a lot to do with the cold air in the northeast.
It can be seen that there is a low trough in Lake Baikal, which extends to the northeast, which is reflected in the daily weather map.
Frequent and active northeast cold vortex. The activity of the northeast cold vortex drives a small cold air to the south, which hits the north of the subtropical high to some extent.
Lift it. The deepest cold air stopped when it reached the Huanghuai river basin, and a few days ago, South Korea was formed under the collision of warm and humid air currents in the south.
The rainstorm in Seoul also includes some recent heavy precipitation processes in Shandong.
From the low latitude, no typhoon forced the subtropical high to move northward.
Second, this is because the current trade winds are very strong. Blue means the east.
The strong trade wind makes all the low latitudes easterly, and no westerly wind collides with it, and even makes some easterly.
The wind system (such as Rudong storm) did not converge enough and further strengthened into a tropical cyclone. The strong east wind also makes
La Nina's recession has slowed down, and there may even be a third peak La Nina in autumn and winter. And this is what needs to be closed later.
Pay attention to whether it will become an important cause of winter climate change in Shanghai, the Yangtze River Delta and even China.
How long will this high temperature last? Personally, I think it is better to wait for the last ten days of high temperature than to have one in the afternoon.
Happy strong convection cools down and relieves summer heat. The cold air in the northeast is only a small force, so it is difficult to beat the subtropical high back to the south as a whole. such
The subtropical high is strong, and the sea temperature in the Yangtze estuary is extremely high. Does the cold air want to beat the subtropical high back to its nest or live in a dream?
All right. The ECMWF extended forecast also points out that the subtropical high may control the Yangtze River basin until the beginning of September, but the extended forecast is for reference only.
There are many variables in the later period, such as subtropical high, typhoon and high latitude circulation, but it is also pointed out that the high temperature heat wave will continue, although it is possible
The temperature is not as high as 40, maybe 35-37 (only because it was too hot before), but be careful.
Cooling in summer is still essential.
Third, one says another, China has no good climate except the Shandong coast and parts of Yunnan-Guizhou Plateau. The Qinghai-Tibet region is cold and lack of oxygen, the northwest of Inner Mongolia is short of water and dry, and the winter in the northeast inland is too long, leaving the so-called eastern elite monsoon.
The biggest problem in the region and monsoon region is the instability of monsoon, which leads to flooding in the area where the rain belt stays, and dry and hot in the area where the rain belt is not.
The flood distribution appears, and at the same time, it changes year after year, and there are not many good years, which also objectively makes our people work hard.
Character.
This summer, the whole Yangtze-Jianghuai basin was controlled by subtropical high for a long time, and the result was high temperature, no rain and no typhoon, just like the central region at the same latitude.
The northeast is no different. Those areas are deserts. The whole monsoon region is affected by the cold wave except Lingnan, and the extreme low temperature appears for a long time. Because there is no heating in the south of Huaihe River, when the cold wave comes,
Sour and refreshing!
I thought it was hot enough that Shanghai was over 40 degrees for six days in a row.
It was not until I saw the temperature sent by my friend that I unconsciously exclaimed that it was four stoves. The highest temperature is already 45. I really want to crack an egg.
How long will it take? Of course, this is not the highest temperature. I searched the hottest city in the world and found it was 58.8. It's really hard to imagine ella.
How do people live? The so-called "meteorological weapon" refers to the use of modern scientific and technological means to artificially create earthquakes, tsunamis, rainstorms, mountain torrents, avalanches, high temperatures,
Aerosol and other natural disasters, a series of weapons to transform the battlefield environment to achieve military purposes. With the rapid development of science and meteorological science
With the rapid development and the use of man-made natural disasters, the weapon technology of "geophysical environment" has been greatly improved and will be developed in future wars.
Play a huge role.
On the whole, China's rainfall belt began to move northward. Although there is no complete conclusion, this theory is verified according to the rainfall changes in recent years. By the way, the problem of South-to-North Water Transfer must consider the situation at that time. We can't look at things with God's eyes. Many things are developing gradually, so we need to look at the problem from a developmental perspective. In addition, the academic circles now have great opposition to the opening of the new line of South-to-North Water Transfer Project. Hainan is hot mainly because the sun is too vicious, but this shortcoming has been overcome these days. There are thick clouds blocking the sun every day, and there is no need to open an umbrella at all.
5. From the last glacial maximum to the Holocene warm period, the biomass of C4 vegetation on the Loess Plateau generally increased. During the Holocene warm period, the summer monsoon rain belt pushed at least 300 kilometers northwest. From northwest to southeast, C4 vegetation shows an increasing trend in cold and warm periods, and its isoline distribution is highly consistent with the modern isoprecipitation distribution. This shows that the increase of C4 vegetation really indicates the increase of monsoon precipitation. The study also draws an exciting conclusion: with global warming, the arid areas in northern China will benefit from it, the rainfall in North China and Northwest China will increase, and the flood disaster in South China will be alleviated, which means that the distribution of water resources will be more even and reasonable!