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 ...

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 ...

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 ...

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 ...

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 ...

The layer of the atmosphere that lies between 6 and 31 miles above the surface is known as the stratosphere. The polar vortex is within the stratosphere. Because of the lack of sunlight ...

However, when the stratospheric ... no cloud seeding, no planned effort, just good ol’ fashioned winter, like it used to be. So, while the headlines will read, “Polar Vortex Assaults the ...