What are the geographical phenomena in Guizhou?

The geographical phenomenon in Guizhou is that there is no sunny day for three days and the ground is not three feet flat.

The so-called "three days without sunny days" refers to the climate in Guizhou, which means that there is no sunny day for three consecutive days, which means that the climate is rainy. The climate type of Guizhou belongs to subtropical monsoon climate, which is influenced by southeast monsoon and southwest monsoon. Summer is the main rainy season, with less precipitation in spring and autumn.

Winter, in the monsoon climate, should be a season with less precipitation, but Guizhou is different. Therefore, the "three sunny days" in Guizhou mainly means that it is often rainy, humid and cold in winter in Guizhou, and the sense of body is poor.

The phenomenon of local rainy weather in Guizhou is mainly influenced by "quasi-static stop before Kunming". Quasi-static front is a kind of front system, which refers to a front system with relatively slow moving speed and quasi-static. There are two main reasons why the front system is slow.

First of all, the cold and warm air masses that form the frontal system are quite strong and pull each other, which makes the frontal movement slow. For example, the rainy weather in the Jianghuai area of China is because the cold and warm air mass is quite strong, and the rain belt stays in the Jianghuai area for a long time, bringing continuous precipitation.

The second is that due to the terrain, the air mass moves slowly and the front stays in a certain area for a long time, forming a quasi-static front.

The main reasons for the rugged Yunnan-Guizhou Plateau

There are two main reasons why the Yunnan-Guizhou Plateau is rugged: First, from the internal force, because the Yunnan-Guizhou Plateau is at the extinction boundary of the Eurasian plate and the Indian Ocean plate, the plates are mutually squeezed, the geological structure is complex, the rock strata are broken, and it is easy to be weathered and eroded by external forces.

Second, because the surface of Yunnan-Guizhou Plateau is covered with a lot of limestone, it is the most widely distributed area in China, with abundant precipitation and strong erosion by flowing water, forming a rugged karst landform. The combination of internal and external forces has created the "100,000 mountains" in Guizhou.