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Polar Stratospheric Clouds - Stratosphere Temperature Chart...

Polar Stratospheric Clouds - Colorful Type II polar stratospheric clouds (PSC) form when the temperature in the stratosphere drops to a staggeringly low -85C. NASA's MERRA-2 climate model predicts when the air up there is cold enough.

Latest Stratosphere Temperature Forecast Charts for the UK and Europe...

Images are updated at regular intervals - courtesy of theweatheroutlook.com