Polar stratospheric clouds (PSCs), also called nacreous clouds, form high in the polar stratosphere during winter, typically between 15 and 25 kilometers in altitude. They develop in extremely cold conditions—around −78°C or lower. Unlike regular clouds, PSCs consist of ice crystals and supercooled droplets of nitric acid and water. These clouds are significant in ozone layer depletion, as they provide a surface for chemical reactions that release chlorine and bromine compounds, which break down
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kaja kaiser | Nacreous clouds, also known as polar stratospheric clouds (PSCs) or “mother-of-pearl” clouds, are rare, iridescent clouds forming in the... | Instagram
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Universe unveiled on Instagram: "These luminous, rainbow-like formations are called nacreous clouds, also known as mother-of-pearl clouds. They form in extreme cold within the lower stratosphere, at heights of about 15–25 km, when temperatures fall below −78°C. Their smooth, glowing appearance often stands out sharply against twilight skies. The vivid colors arise from diffraction and interference as sunlight passes through tiny ice crystals in the clouds. Though rare and visually stunning, they
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