中国黄山风景名胜区
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Meteorological Scenery
浏览次数:   Huangshan UNESCO Global Geopark发布时间:2019-05-20 11:29:38

Sea of Clouds

It refers to the layer of clouds formed under certain weather conditions, with the top of clouds lower than the mountain peaks. Viewed from atop the peaks, the boundless flowing clouds look like the vast undulating sea, surging and splashing. Therefore, this phenomenon is vividly portrayed as “the sea of clouds”.

The causes of this phenomenon:

Mt. Huangshan features high peaks, low valleys,dense forestry, and short duration of sunshine, which render evaporation difficult, thus a high level of humidity. Thin mists can often be seen rising from the valleys. There are about 250 foggy days throughout the year.

In winter and spring, the air temperature at the bottom level of the atmosphere is low, making the condensation height of clouds low (about 800~1200 meters) as well. Coupled with frequent cold air and other weather activities, there is a higher probability of vast cloud sea, especially after the rain or snow.

During the rainy season in summer, with the temperature rising, the clouds condensation level rises to 1,500 meters, which may level or even surpass the height of most peaks, and therefore it is not easy to view the sea of the clouds.

Mt.Huangshan in July and August is often affected by the Pacific subtropical high-pressure belt. With increasing temperatures, cloud condensation level also rises to the highest of the year. The shadow side of the mountain with high humidity is prone to convection currents. From morning to afternoon, cumulus clouds may be formed around the mountains, but the clouds layer is often higher than the peaks, making them a rare view. During dusk or dawn, the cloud seas formed by the cumulus clouds and cumulostratus can be seen occasionally, but they are easily dispelled by the circulations, thus the duration of the clouds sea short.

During September and October in autumn, due to the impact of the cold currents, the temperature decreases, and the condensation level of clouds also drops. Following the currents, vast areas of cumulus clouds can be formed easily, resembling a sea of clouds.

Best time for the view:

The best view of sea of clouds presents itself only in 51 days of all 365 days in a year. The best period to enjoy sea of clouds lasts from November to May. The view is exceptionally amazing after the rain and snow, before the sunrise or sunset.

Vantage points of view:

The Lion Peak, Refreshing Terrace, Cloud Dispelling Pavilion, Wenshu Platform at Jade Screen Peak, White Goose Hill, and Brightness Summit



Sunrise

The sea of clouds ranks first among “Four Natural Wonders” of Mt. Huangshan, especially the “glow dyed sea of clouds”during the sunrise, rippling like the golden waves.

Vantage points of view:

Jade Screen Peak,Lion Peak, Refreshing Terrace, White Goose Hill, Cloud Dispelling Pavilion, North Sea Hotel, Brightness Summit, Dawn Pavilion, Turtle Peak, and Red Clouds Peak.

Ideal viewing time:

Inquire the park or hotel staff the day before.




The Buddha Halo

The Buddha Halo is a once-in-a-blue-moon view, which is traditionally regarded as the light of Buddha and the immortals,holy and auspicious. As a matter of fact, it is actually an optical phenomenon in the atmosphere, which is created by the diffraction and diffuse reflection of sunlight on the clouds surface. The sun projects the human shadow to the clouds in front of the viewer from behind, and the tiny ice crystals and water drops in the cloud form a unique circular rainbow. When the viewer’s figure is projected onto the halo, it will wave as the viewer waves.

Mt. Huangshan has affluent resources of halo views. As long as there is sea of clouds and sunrise, the opportunity to appreciate the Buddha halo is available all year round at various places, ranging from the Lotus Peak, Brightness Summit, Shixin Peak (Begin-to-believe Peak) to the Lion Peak, the Turtle Peak, Jade Screen Peak and many others.

Tips:

It is more likely to see Buddha halo after the rain or snow in Mt. Huangshan. On sunny days with sea of clouds or when the weather clears up after rain or snow, with the sunshine reflecting on cloud mists, take your position with your back to the sun, and let your shadow project onto the mists, with sun-viewer- mists in a straight line. Pay attention to the direction of sunlight and the flow of mists, and you can accurately judge the position and time of the halo appearance.



Rime and Glaze

Rime is a rare natural wonder of desublimation of vapor in the air at low temperature, or the white ice crystal sediments of cold fog molecules frozen directly on surface of objects.

Rime is neither ice nor snow, but countless granular vapor molecules sediments below 0℃ in the fog accumulating on the tree branches. The forming of rime requires low temperature and adequate vapor molecules, which are indispensable but conflicting conditions.

Glaze refers to a glass-like transparent coating of ice formed when extremely cold rain droplets touch the solid surface which is 0℃ or lower. The rainfall creating glaze is called freezing rain.

The annual average number of days of rimes and glazes in Mt. Huangshan is 62 days and 35.9 days respectively. Most rimes in Mt. Huangshan are granular, formed between -2℃and -7℃. When the fog molecules become drizzles, a glaze is formed.On account of the varied landforms, regional weather differences, some places have more rimes, while others more glazes, or both at the same place.

Ideal season for view: winter


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