The reasons for the rapid climate change and fog in Tianchi, Changbai Mountain.

Reason: Due to the high air humidity in Changbai Mountain area, the number of foggy days is generally more than that in plain area. However, the formation of fog depends not only on humidity, but also on topography, so there are sometimes great differences between adjacent areas. The foggy days in Linjiang and the Year of the Loong at the foot of Changbai Mountain are only 6.6 days and 8.8 days respectively, while those in Songjiang and Fusong are 42.4 days and 27.5 days respectively. The top of the mountain is foggy, reaching 264.8 days in a year, which is second only to Mount Emei and other two-three-high mountainous areas in China, but much more than other places. In the cold season, when there is fog, it often fogs, commonly known as tree hanging. There are 179 foggy days at the top of Changbai Mountain, which is the highest in China.

Changbai Mountain is a dormant volcano with water in its crater, and the pool water that melts in summer is blue. The frozen ice surface in winter is white, surrounded by 16 peak. Only between Tianhuo Peak and Guanri Peak, a narrow pool overflows and falls into Changbai Waterfall. The climate on Tianchi Lake is changeable, and there are wild animals swimming in the water, which often appear on the water.

Changbai Mountain was formed by geological orogeny 6.5438+0.2 million years ago. Tianchi is a cone tube of magma eruption. After repeated splashing, it developed into a huge umbrella. When the volcano is dormant, the spring water overflows, forming a vast water surface of more than 10 square kilometers. Tianchi Lake is 2 189. 1 m above sea level, slightly oval, 4.4 kilometers long from north to south and 3.37 kilometers wide from east to west. Is the catchment 2 1.4㎞? The water surface area is 9.82㎞? Water surface circumference 13. 1km, with an average water depth of 204m and the deepest point of 373m. The total storage capacity is 2.04 billion cubic meters. The water temperature in Tianchi Lake is 0.7℃- 1 1℃, and the annual average temperature is 7.3℃. Tianchi is like a magnificent jasper embedded in the majestic peaks of Changbai Mountain. It is the highest and largest alpine lake in China. It is also the highest altitude and deepest mountain lake in the world. It is the border lake between China and North Korea.