Fantastic nacreous cloud appears in the sky of Abisco, Sweden

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This fantastic colorful nacreous cloud appeared in the sky of Abisco, Sweden on December 14, 2015.

Mother of pearl clouds are a kind of polar stratospheric clouds that float through the stratosphere (25 km) and they are fantastically colorful.

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Nacreous clouds are colorful polar stratospheric clouds.
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These mother of perl clouds appeared in the sky of Abisco, Sweden on December 14, 2015.
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Polar stratospheric clouds float at 25km above Earth surface.
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These rare colorful clouds form in the lower stratosphere when temperatures drop to around minus 85ºC.
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The iridescent colors appearing in the clouds are the result of diffraction and interference of sunlight shining through tiny ice particles ~10µm across.

Nacreous clouds far outshine and have much more vivid colours than ordinary iridescent clouds but some polar stratospheric clouds are are linked to the destruction of ozone.

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