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Nacreous clouds

chris82
in Nature & Wildlife

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Tonight i seen for the first time ever some Nacreous "mother of pearl" clouds. Also known as polar stratospheric clouds. These clouds are 15-30km (10-20 miles) up in the stratosphere. They form in the freezing temps of the lower stratosphere at temps below -80ºc. Formed of nitric acid and ice crystals and lit when the sun is below the horizon.

They look incredible but they have a downside. Their chemical composition assists the production of chlorine which in turn contributes to the depletion of the ozone layer.

 

These were taken from my kitchen window as i was just getting home from work when i first noticed the clouds .

 

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    Hello chris82,

    Take a look here: Nacreous clouds .

    • Author

    The sky continued to produce a variety of colours until it went dark a few minute later

     

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    • Author

    The clouds were visible again this morning so i got a few more pics before heading off to work

     

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    post-5772-0-83758300-1454430621_thumb.jpg

     

    post-5772-0-62101200-1454430633_thumb.jpg

     

     

     

     

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    https://www.sonyalphaforum.com/topic/3644-nacreous-clouds/
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