Chongqing is known as the "furnace city". Why is Chongqing so hot in summer?

A stove refers to a hot city in summer. It first began in the Republic of China, when Chongqing, Wuhan and Nanjing in the middle and lower reaches of the Yangtze River were hot in summer, so they were called "three furnaces".

During the Republic of China, there was a high temperature area in the middle and lower reaches of the Yangtze River in China, including Nanjing, Wuhan and Chongqing. In China and Japan, the highest temperature exceeds 30℃ for more than 70 days in a year, with high temperature above 40℃, so these three cities are also called "three furnaces". It's not that these three cities are unusually hot, but as well-known cities, their heat is easier to remember, which is the result of the propaganda of literati in past dynasties.

In the mountain city of Chongqing, the heat in summer is unbearable, which is directly related to the geomorphological characteristics of the city. The main summary is as follows:

1. First of all, Chongqing is located in the east of Sichuan Basin, with a low average elevation. Because the temperature drops vertically, its own temperature is not low.

2. Located in the basin, surrounded by mountains in the north, the downward airflow is not easy to spread in summer, with low wind speed and rapid temperature rise.

3. The Qinling Mountains and Daba Mountains in the north block the cold air from going south in winter, and the winter is mild.

4. Summer is affected by the movement of the subtropical high belt in the northern hemisphere, and July and August are summer drought weather in Chongqing, with mainly downdraft, less clouds, sunny days, dryness and high temperature.

5. Located in the middle and low latitudes, it is influenced by the warm and humid Pacific monsoon. It belongs to subtropical monsoon climate, and it is usually hot and humid in summer.

6. The urban layout is three-dimensional, the high-rise buildings are concentrated, and the ground refractive index is low, which hinders the effective circulation of air and is not easy to dissipate heat, which intensifies the urban heat island effect.

7. Due to industrial production, basin topography, population concentration and many other factors. The atmospheric inverse radiation effect is remarkable, and the ground temperature rises rapidly.

8. Living inland, not affected by the ocean, it has a typical continental climate.

Summary: Chongqing is not the hottest city, but it is also unique and has its own unique aesthetic feeling.