Have you ever looked up at the sky and been struck speechless by a cloud so strange it seemed like a message from another ...

Polar stratospheric clouds are very rare, as they occur between 49,000 and 82,000 feet up, in the stratosphere layer of the atmosphere over the Earth's poles, ...

The Arctic Circle clouds, known as polar stratospheric clouds (PSC), only form when the lower stratosphere reaches temperatures below minus 114 degrees Fahrenheit (minus 81 degrees Celsius ...

Learn more about nacreous clouds, also known as polar stratospheric clouds. We take a look at how these colorful clouds form and why they're so rare.

Type II polar stratospheric clouds (PSCs) are known as one of the most beautiful cloud types in Earth's repertoire, appearing above the Arctic and Antarctic as softly glowing whisps with a ...

Stratospheric clouds over the Arctic may explain the differences seen between the polar warming calculated by climate models and actual recordings, find researchers from UNSW Sydney. November 8 ...

Invisible Gas Clouds Are Warming the Poles Faster Than We Predicted ... “This water vapor then travels upward into the stratosphere, and helps to form polar stratospheric clouds,” or PSCs for ...

Polar Stratospheric Cloud (PSC): Clouds formed in the stratosphere under extremely low temperatures that facilitate heterogeneous chemical reactions, impacting ozone depletion.

Arctic observers got a rare festive treat when rainbow-colored clouds appeared in the skies. So-called polar stratospheric clouds were seen over Norway, Sweden, Finland, Alaska, and Scotland.

Nacreous clouds are a type of polar stratospheric cloud and are associated with freezing and dry weather. Depending on chemical composition, ambient temperature, and elevation, ...