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 ...

Polar mesospheric clouds (PMCs), particularly noctilucent ... Recent balloon-borne experiments, such as the Stratospheric Observations of Noctilucent Clouds (SONC), have provided valuable data ...

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 ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

Professor Toon has helped conceive, develop and lead many NASA airborne field missions aimed at understanding stratospheric ... of cloud-related physical processes in models. Professor Randall's ...

However, when the stratospheric polar vortex weakens and gets “kicked ... No conspiracy, no cloud seeding, no planned effort, just good ol’ fashioned winter, like it used to be.

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 ...