Temperatures are achingly cold in the stratosphere over the Arctic, which can only mean one thing: it's perfect conditions ...

Polar stratospheric clouds (PSCs) are a significant phenomenon in the polar regions, particularly during the winter months. These clouds form at high altitudes in the stratosphere and play a ...

Following the sweeping path of a cold wave through the Arctic, the skies were alight with rare polar stratospheric clouds, which presented a rainbow-like show throughout the sky. Images of the ...

One risk is that these new particles could seed polar stratospheric clouds, which are spectacular rainbow-colored clouds that can damage the ozone layer, experts told Business Insider.

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

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

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 ...

Since temperatures in the Arctic stratosphere often come within a few degrees of the threshold for forming polar stratospheric clouds, further cooling of the stratosphere could cause these clouds to ...

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 ...

Our initial studies focused on measuring heterogeneous reactions on ice and nitric acid/ice surfaces representative of polar stratospheric clouds. We found that these icy clouds catalyzed reactions ...