Rare Rainbow Clouds Appear in Iceland Thanks To Freezing Temperatures
Photographer: Jónína Guðrún Óskarsdóttir
These polar stratospheric clouds (PSC) paint the sky with different colored stripes. PSCs are a type of wave cloud that are most often found downwind of mountain ranges. As expected, Óskarsdóttir's stunning rainbow cloud images feature prominent mountains. The colorful clouds form when the lower stratosphere hits -114°F (-81°C).





















