Why Is The Sky Blue?
7. Blue Haze
In some parts of the world, particularly mountainous regions, you will see a sky that appears as a blue haze. Not only does the sky itself appear to be blue but the mountains themselves also appear to take on a blue color. It is a phenomenon commonly witnessed in Virginias Blue Ridge Mountains and Tennessee’s Smoky Mountains.
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This is because of how hydrocarbons emitted by vegetation react with ozone molecules. These particles will scatter the blue light further, including light coming directly from the surrounding mountains, causing everything else to appear blue. It is best viewed from high up looking down on the surrounding landscape.
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