Why is it so hot in Sichuan this summer?

Since this summer, high pressure weather has appeared in Sichuan, even breaking the historical record of 43.9 degrees. This also makes people wonder why it is still so hot after the dog days. First of all, the continental high has been controlling the sky over Sichuan since summer. At the same time, under the action of continental high pressure, part of the airflow is falling and the other part is rising, and the two collide with each other to form compression, which leads to the temperature increase. Secondly, since the beginning of this year, the precipitation in Sichuan is still very small when the high temperature weather continues to appear. This makes the soil and air temperatures everywhere very high. In this case, high pressure and low pressure work together, and the temperature of soil and air rises instead of falling. In addition, the warm high in Central Asia is connected with the continental high and the subtropical high from the tropical region, which eventually leads to today's high temperature.

1, high and low pressure collision compression

From the meteorological point of view, the temperature rise in any area is actually a temperature change, and the temperature change is due to the role of air pressure. The high air pressure over Sichuan mainland caused some air currents to drop and others to rise. The two collide to form compression, which eventually makes the air temperature higher and higher.

2. No rain for a long time makes the soil and air temperature very high.

In daily life, we will find that if it rains for several days, not only the temperature is low, but also the temperature of objects such as soil is falling. Due to the high temperature and little rain in Sichuan this year, the air and soil temperatures are very high. Under the action of high and low air pressure, the temperature of air and soil can't drop, but it helps to raise the temperature.

3. The warm high and subtropical high in the western plateau are integrated.

China is low in the east and high in the west. Every year, a warm high is formed from Central Asia, and after entering China, it becomes an unusually strong warm high together with the continental high. At the same time, a southwest subtropical high will enter Sichuan, and the two high pressures will eventually merge into one, resulting in the continuous high temperature weather in Sichuan this year.

/d 8 F9 d 72 a 6059252d 9756d 490269 b 033 b5 ab 5b 9 e 5？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto