11 December 2012 Last updated at 12:05

Your photos of clouds in Scotland

Pink pearl-coloured wispy clouds float behind a silhouetted tree in a blue sky.

Beautiful iridescent clouds have been brightening the evening and early morning skies across Scotland over the last few days. Known as nacreous or mother of pearl clouds they are formed some 15-25km (9-16 miles) high in the stratosphere at temperatures below -78C. Neal Weston photographed these in Temple of Fiddes, Aberdeenshire on the evening of 9th December. He says: "I've never seen any before and they were quite beautiful."

A loosely shaped iridescent pearl-coloured cloud swirls in a blue sky. Telephone lines span out across the picture.

Seen after sunset and before dawn in winter, they are so bright because their great height means they are lit by the sun from below the horizon. Mairi Johnson spotted these over Kingussie at the weekend.

A bright yellow pearl-coloured cloud sits behind grey clouds in a grey sky. Below are silhouetted house tops.

14-year-old Michael O'Neill took this photograph from Macduff, Aberdeenshire on Sunday.

A white pearl-coloured cloud with a trail sits in a blue grey sky. Around it are peach coloured small clouds. A silhouetted group of tall trees in the foreground.

Ian M Brown took this photo on his phone whilst out walking in Countesswells Woods near Aberdeen on Sunday.

An iridescent pearl-coloured cloud sits in a grey sky behind rising grey clouds.

Most commonly appearing in the polar regions, it is relatively rare to see such a good display in the UK. These clouds play a part in the formation of ozone holes, as they contain chemicals which destroy ozone. Scott Crawford captured these clouds above Fraserburgh, north east Scotland at sunset on Sunday.

A pearl coloured-cloud with a trail sits in a dark blue sky. Below a street lamp shines amid bare tree branches.

Samantha Whipps took this photo at Chapel of Garioch, near Inverurie, Aberdeenshire on 9th December.

Howard Eakin also saw the clouds above Banchory on Sunday. He says: "We saw these incredible rainbow-coloured clouds. I have never seen anything like these before. They lasted for about 10 minutes."