What's the situation? China's rainfall has undergone a major change, in 2021 it has been "drenched", and since the autumn, the rainfall in the north of China has surpassed the southern region, and there has been a situation of "northern flooding and southern drought", which can be said to be incredible. When it comes to the situation of "flooding in the north and drought in the south", everyone may think of it first, is our "south-to-north water diversion project" not a factor of little rain in the north? How did this turn out?
Is it true that in the future, there will be a "north-to-south water diversion", such a transformation is really beyond everyone's imagination, so many people think that 2021 may be a turning point in the climate, the northern rainfall will surpass the south, and the north will change to the south? What is the situation, let's take a step-by-step look.
<h1 class="pgc-h-arrow-right" data-track="20" > the rain in the north surpasses the south! </h1>
According to the statistics of the National Climate Center, since the autumn of 2021, the rainfall in the north of China has obviously exceeded that of the south, and there has been a phenomenon of "northern flooding and southern drought", since September (September 1 to October 25), the national average precipitation reached 131.3 mm, 36.5% more than the same period of the year, and this rainfall has reached the second most in the same period of history since 1961. Second only to 132.2 mm in 1983, this shows that the rain in our country has increased significantly and on a large scale since the beginning of autumn.
However, the distribution of rainfall has been uneven, but the rainfall in the northern region has become more, the rainfall in the south has become less, and there has been a serious "unusual" state, while the rainfall has also appeared concentrated, and the local area has set a new record in history. According to the data, the precipitation in the north is 1.4 times more than the same period of the year, which is the most in the same period of history since the complete meteorological record was recorded in 1961.
In contrast, rainfall in the south has become scarce and the temperature is still higher, with the average temperature in the south (22.7 °C) 1.5 °C higher than the same period of the year, the highest in the same period of history since 1961. See? Just as the north is becoming a southern part of the country and the south is becoming a desert, the south not only has no rain but also has a very dry climate, so this is a bad phenomenon. At least in essence, it will affect the overall climate pattern of our country.
<h1 class="pgc-h-arrow-right" data-track="19" what is > the reason why the rain in the north surpasses the south? </h1>
For a long time, we have been saying that the events of global climate changes are, fundamentally speaking, extreme climate events, and the overall climate model of our country is also relatively complex, and the distribution of extreme climate events is also a certain probability. However, this is not the only factor that can be explained, the key is that the atmospheric instability brought about by global warming has led to a continuous rise in such climatic events, which is why.
Of course, in addition to this reason, according to expert analysis, there are other factors in the "northern flood and southern drought", that is, the La Niña event in the equatorial Middle East Pacific Ocean may have an impact on China's climate. That is to say, the natural phenomenon "La Niña phenomenon" is affecting the overall climate of our country. And, there's also bad news that a new round of La Niña is happening.
According to the climate center, it is expected that a weak to moderate intensity La Niña event will be formed this winter, and in the process of development, it will also lead to an abnormal amount of precipitation in the northern region of China compared with the same period of the year, while the southern region will have less precipitation, high temperatures and meteorological droughts under the control of the subtropical high pressure in the northwest Pacific region. So, this further illustrates the problem that rainfall in the north will increase and rainfall will decrease in the south.
What's the situation? Is the north really going to become Jiangnan? Rainfall is escalating. This climate change is really "unexpected". At the same time, we also have to remind you here that after the La Niña phenomenon this winter, you may encounter extreme cold weather, and everyone should be prepared. A big cold wave or a boss-level cold wave may still occur, and you need to be vigilant, which is the general situation. Looking back at the problem of rainfall in the north, there is actually a fact.
<h1 class="pgc-h-arrow-right" data-track="18" > yes! Rainfall in China is moving north</h1>
First of all, we need to understand that global warming is still a fact, and even if there is an extremely cold winter this year, this will not reverse the pace of global warming. According to the 2021 climate report, the average temperature of the earth in 2020 is already more than 1.2 degrees higher than in the industrial era, which is the climatic tipping point of 1.5 degrees from the Paris Agreement that we are talking about may soon be broken, so global warming is still developing.
As early as 2015, the Proceedings of the National Academy of Sciences published the Chinese rainfall problem studied by Chinese scientists, and it turned out that global warming will lead to the northward shift of the East Asian summer wind and rain belt, thus bringing abundant precipitation to northern China. Therefore, there is no problem at all that China's rainfall is moving north. This also shows that global warming is indeed changing the climate problem in the north and south of our country.
<h1 class="pgc-h-arrow-right" data-track="15" > summary</h1>
The great changes in the climate have been gradually staged, the global climate response is becoming more and more obvious, including in 2021 we see that the changes of the four seasons are also gradually lost, many people may directly feel that the "four seasons" are only left with "summer and winter", is this the case? Statistically speaking, it is true that autumn is shortening in a wide range of regions.
In 2021, the main thing is that the climate fluctuations are too strong, and we have almost experienced the four climate patterns of "spring, summer, autumn and winter" in one month, so many people think that the climate of our earth is really too unusual, and the four seasons are chaotic on the line, which is also a normal situation.
This also once again sent a wake-up call for mankind, we should protect the earth well, can not be destroyed at will, otherwise sooner or later our earth will become unsuitable for human habitation, the future may really be the implementation of "Mars colonization".