Extreme clouds hover above Antarctica Reuters Wednesday, 2 August 2006 Nacreous clouds Nacreous clouds seen as the fading light passes through tiny ice crystals blown along on strong jets of air (Image: Renae Baker) Rare, mother-of-pearl coloured clouds caused by extreme weather conditions above Antarctica are a possible indication of climate change, Australian scientists say. Known as nacreous clouds, the spectacular formations showing delicate wisps of colours were photographed in the sky over an Australian meteorological base at Mawson station on 25 July.
Comments