What is the difference between this round of heavy rain in Shanxi and the 720 heavy rain in Henan?

At present, heavy rainfall has formed in northern China. Many people are discussing why the north has become the center of rainfall this year, and it has now entered the late autumn season. Logically speaking, it should not There is so much rain. Many people compare this rainfall with the previous 720 rainfall in Henan. Today we will discuss the differences between these two rainfalls and why this rainfall occurred.

First, what are the differences in this rainfall?

First of all, there are differences in the causes of rainfall. In the previous 720 heavy rain in Henan, although Henan was also the center of heavy rain at that time, the reason why heavy rainfall formed at that time was mainly due to the heavy rain at that time. There happened to be a typhoon passing through, so the low-pressure environment created by the typhoon formed a series of reactions with the subtropical high-pressure environment in our north. Coupled with the influence of terrain, a large amount of precipitation is concentrated in central Henan. This time, the rainfall in Henan and Shanxi is mainly due to the influence of monsoon climate.

Second, the intensity of rainfall between these two times is also very different.

Because it was a typhoon passing through at that time, it carried a lot of water vapor, so the rainfall of 720 was very exaggerated, breaking various records in a short period of time, and this time, because it was Monsoon climate affects the climate, so the impact lasts longer and covers a wider range. However, the amount of rainfall in a short period of time is not as exaggerated as the rainfall in Henan.

Third, how do you view the current weather and climate?

Many people are used to thinking that this rainfall is the cause of extreme weather and climate, but in fact, most of the time, there will be continuous rain in the north in autumn. This time it is just rainfall. The relatively large amount may be because a new low-pressure air mass has emerged from the south, and the most important thing is that the cold air from the north arrived earlier this year, which caused the intersection of cold and warm currents to form rainfall.