Causes and laws of the sea of clouds in Huangshan Mountain

The formation of the sea of clouds has its reasons and laws. Huangshan Mountain has high valley, dense forest, short sunshine time and difficult evaporation of water, so it has high humidity and much water vapor. After the rain, wisps of light fog often rise in the valley. There are about 250 foggy days on average throughout the year, which is really a land of fog. The sea of clouds in Huangshan is formed by low clouds (the height of the cloud bottom is less than 2500 meters) and ground fog. Low clouds are mainly stratocumulus clouds, which is its characteristic. From June165438+1October to March of the following year, 97% of the sea of clouds in Huangshan was formed by stratocumulus, and only 3% was formed by stratocumulus or fog. From June to September, there are clouds formed by light cumulus clouds and thick cumulus clouds, accounting for about 6% of the total cloud amount in this period.

In winter and spring, the air temperature in the middle and lower layers is low, the condensation height of stratocumulus is low (about 800 ~ 1200m), and cold air activities are frequent. The weather activity is obvious during the process. After rain and snow, there will often be a large area of good sea of clouds, especially the spectacular sunrise of the sea of clouds. In the rainy season after summer, with the temperature rising, the condensation height of clouds rises to about1500m, and the height of clouds exceeds or approaches most peaks. At this time, the clouds are shrouded and it is difficult to see the sea of clouds. July-August is the midsummer of Huangshan Mountain. During this period, it is often controlled by the Pacific subtropical high, the temperature rises, and the condensation height of low clouds also rises to the highest level in the whole year. The shady side of the mountain is humid and prone to convection. From morning to afternoon, light cumulus clouds and thick cumulus clouds often form around the mountain, but because the clouds are higher than the summit, the sea of clouds is rare. In the evening or morning, you can occasionally see a sea of clouds formed by cumulus and stratocumulus, but they are easily destroyed due to the influence of circulation, and the sea of clouds lasts for a short time. After autumn, affected by the cold air in the north, the temperature drops and the condensation height of low clouds also drops. After the cold air, there will often be a large sea of clouds with high stratocumulus.

The sea of clouds in Huangshan is particularly unique. Huangshan has beautiful peaks, steep cliffs and deep valleys. The airflow passes through the mountains, jumping up and down, and the circulation is active. Clouds and stratocumulus all over the sky fluttered with the wind, sometimes rising, sometimes falling, sometimes rotating and sometimes stretching, forming a strange and ever-changing sea of clouds. Song of the Sea of Clouds in Huangshan by Wu Youshi, a native of Xiuning in Qing Dynasty;

Looking around, it is as turbulent as a storm, and the wind shakes the tide.

There are peaks above the stormy waves, and now the ship is rocking with the waves.

The wind is rising, the waves are rising, and endless hearts are shocked.

The small dew on the top of the mountain is like a stone, so how can it be as high as Zeguo?

It reflects the wonders formed by the ever-changing sea of clouds in Huangshan. When it is calm, white clouds are boundless and overwhelming. Numerous peaks are submerged by white clouds, leaving only a few peaks, like islands in the sea. He Jiang, a poet in A Qing, said: The white clouds suddenly spread out into the sea, and the thirty-six peaks were swallowed up.

Although the sailboat is gone, the little snail will still be here from time to time.

Described the scene when the sea of clouds in Huangshan Mountain was calm. But in a blink of an eye, the waves surged again, the waves splashed and the waves beat against the shore. Especially after rain and snow, "going to sea" at sunrise or sunset is the most spectacular. The sun is in the sky, the sea of clouds is below, and the sun shines brightly. The white clouds, clouds and waves in the sea of clouds are all stained with gorgeous colors, such as brocade, flowers, fat and beauty. From an aesthetic point of view, the beauty of the sea of clouds in Huangshan lies in that it looks like the sea, not the sea, but the sea. The floating of white clouds makes Huangshan Mountain present the beauty of tranquility and movement. It is in this combination of dynamic and static that an unpredictable and colorful fairyland on earth has been created.