2.3K views · 78 reactions | Thin clouds of acid droplets and ice crystals. Up to 25 km above Davis research station. Around 90⁰C below zero. And a powerful green laser pulsing into the dark winter night. What does this all mean for the seasonal ozone hole above Antarctica? Find out more at www.antarctica.gov.au/news/2019/antarctic-laser-probes-ozone-eating-clouds Video: NASA Ozone Watch | Australian Antarctic Program | Facebook

10K views · 163 reactions | Polar stratospheric clouds at dusk today. Rare weather phenomenon, so this is amazing to see ☺️. By Karin Granqvist | We Are Nature | Facebook

Today, we were lucky enough to witness the rare beauty of Polar Stratospheric Clouds in Rovaniemi! 🌈 ✨ These stunning clouds form in the stratosphere, around 15-25 kilometers above the Earth’s surface, during the winter months. They are made of supercooled droplets of water and nitrid acid, or ice crystals that create a vibrant, colorful glow when sunlight reflects off them. What makes them so rare? To see these clouds, you need a perfect combination of clear skies and the right temperature con