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Space A Lenticular Cloud Over New Zealand

Discussion in 'Tech, Science, and Space' started by Robby, Jan 21, 2009.

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  1. Robby

    Robby The Robot

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    NASA Astronomy Picture Of The Day
    A Lenticular Cloud Over New Zealand


    [​IMG]


    A Lenticular Cloud Over New Zealand
    Credit & Copyright: Chris Picking (Starry Night Skies Photography)

    Explanation: What's happening above those mountains? Several clouds are stacked up into one striking lenticular cloud. Normally, air moves much more horizontally than it does vertically. Sometimes, however, such as when wind comes off of a mountain or a hill, relatively strong vertical oscillations take place as the air stabilizes. The dry air at the top of an oscillation may be quite stratified in moisture content, and hence forms clouds at each layer where the air saturates with moisture. The result can be a lenticular cloud with a strongly layered appearance. The above picture was taken in 2002 looking southwest over the Tarurua Range mountains from North Island, New Zealand.



    (Via NASA)
     

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