Interesting sparkling nacre cloud strip rare in Scotland

Just before the sunrise on December 9, the lucky people on the island of Scalpay (Scotland) have witnessed the spectacle of the cloud shining with nacre color.

Amateur hands engineer Jez Wheeler is one of the few lucky ones. He has grabbed a very impressive picture of a multicolored cloud of clouds known as nacre clouds in the sky at dawn.

Jez Wheeler excitedly recounted: "I woke up at 8:15 am and looked outside when I suddenly saw an extremely rare image of nacre cloud. I was really unexpected at that moment and tried my best to capture photo. Cloud of nacre is beautiful! "

Image of nacre cloud strip in Scotland sky in the morning of 9/12.

The clouds gradually turned silver, looking like a stranger visiting the sky.

Les Cowley, an expert in atmospheric optics, explains: "True nacre clouds are very rare. Once you have the opportunity to see nacre clouds, it is the moment of life, never. forget it ".

Most clouds of nacre can only see clearly for about 2 hours after sunset or before dawn. It was a time when they were unbelievably bright with countless vivid colors and slowly changing.

Nacreous clouds look like thin films, gently curled up and then flattened out, spread out and then shrink in the sky in the morning and evening.

Nacreous clouds are often formed in extremely cold areas of the low stratosphere, with an altitude of 15-25km, directly above the troposphere clouds. The reason they shine so strongly before dawn and after sunset is because they are still exposed to sunlight.

Streaks of nacre clouds remain after the brightest time in the sky.

Nacreous clouds are most common in winter in high latitudes such as Scandinavia, Iceland, Alaska and Northern Canada. However, sometimes, they also appear in the sky in southern England.

Dave Clark, an expert at the Aberdeen Weather Forecasting Office, said: "It is unusual to be able to observe these nacre clouds in the Scottish sky because in theory they are formed at the Save, higher than our weather area.

Nacreous clouds are a direct consequence of the fact that humans emit too much methane. This gas reacts with ozone and forms chlorine clouds.

In the past, only nacre clouds could be seen in countries near the extreme. But their arrival in Scotland is a worrying sign because it is a sign that Earth is warming. "