Winter skies aren’t known for their colour.
While a crisp layer of snow will brighten any landscape, we associate the colder months with dreary grey clouds.
It’s not just in our heads; winter does come with fewer clear days.
During the colder months, the upper atmosphere is often warmer than the air at ground level. These air masses are very stable since air only rises when it is warmer than the air above it. Without the mixing caused by rising air, clouds spread smoothly across the sky, obscuring our view of the sun and stars.
But when wind breaks the clouds apart, we are often treated to some truly spectacular skies.
