Look at the Sky..

Furryanimal

Y gath o Gymru
Location
Wales
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Snapshot answer
It’s a rare “mother-of-pearl” cloud, images of which were captured by stargazers across Scotland on Sunday evening. Also known as nacreous clouds, the formations are usually only seen in extremely cold conditions above polar regions. They develop in the stratosphere, around twice as far from the Earth’s surface as normal clouds, and get their pastel colours from sunlight diffracting around tiny ice crystals.
the Knowledge
 

I used to live at lower latitudes. I got used to seeing fluffy clouds.

Now I live at 60° north. I see a lot of those long flat clouds, and wanted to find out why. Apparently the troposphere (the first layer of the atmosphere) is 18 km high in tropical regions, but only 6 km high near the poles.

So "higher" clouds (cirrostratus, etc.) are more visible here, because they aren't as high.
 

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