Temperatures are achingly cold in the stratosphere over the Arctic, which can only mean one thing: it's perfect conditions for psychedelic skies filled with rainbow-colored clouds. Type II polar ...

Bright and dazzling, waves radiating rainbow colors sweep across the northern skies of Sweden, displaying beautiful hues. Known as "nacreous clouds" or "mother-of-pearl clouds," these clouds are a ...

They are actually a rare cloud called nacreous clouds or polar stratospheric clouds, they are also known as mother of pearl due to their iridescent appearance. They occur in the winter polar ...

Nacreous clouds usually form in very cold conditions over polar regions and within the stratosphere, far above our normal clouds. One of the highest clouds, they are often referred to as "mother ...

Polar mesospheric ... phenomena and cloud formation emphasizes the intricate dynamics at play in the upper atmosphere. Recent balloon-borne experiments, such as the Stratospheric Observations ...