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nacreous cloud

/ˈneɪkriəs klaʊd/

翻译: 一种罕见的高空云,又称极地平流层云,形成于平流层极高处,呈现鲜艳的虹彩颜色,常似珍珠母贝的光泽。

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/ˈneɪkriəs klaʊd/C2formalscientific
  • zh一种罕见的高空云,又称极地平流层云,形成于平流层极高处,呈现鲜艳的虹彩颜色,常似珍珠母贝的光泽。

A rare type of cloud, also known as polar stratospheric cloud, that forms in the stratosphere at very high altitudes and displays brilliant iridescent colors, often resembling mother-of-pearl.

  1. Polar stratospheric cloudC2formal

    A rare type of cloud that forms in the stratosphere at very high altitudes, known for its iridescent, mother-of-pearl colors.

    zh珠母云

    • Nacreous clouds are often observed in polar regions during winter.
    • The stunning colors of nacreous clouds are caused by diffraction of sunlight.
    • Scientists study nacreous clouds because they play a role in ozone depletion.