V2EX altostratus

Altostratus

释义 Definition

Altostratus 是一种中高层云,通常呈灰色或蓝灰色的均匀云层,覆盖大面积天空,常遮蔽太阳,使其看起来像透过磨砂玻璃一样模糊。高层云通常预示着即将到来的降水。

发音 Pronunciation

/l.tostrt.s/

例句 Examples

The sky was covered with a thin layer of altostratus, dimming the afternoon sunlight.
天空被一层薄薄的高层云覆盖,午后的阳光变得黯淡。

As the altostratus thickened and lowered throughout the morning, the meteorologist warned that steady rain was likely to begin by evening.
随着整个上午高层云不断加厚并降低,气象学家警告说,傍晚前很可能会开始持续降雨。

词源 Etymology

Altostratus 由拉丁语 altus(意为"高的")和 stratus(意为"铺展的、层状的",来自动词 sternere,"铺展")组合而成。该术语在19世纪由气象学家引入,用于对不同高度和形态的云层进行系统分类。前缀 alto- 在气象学中特指中层云(约2000至6000米高度),而 stratus 则描述了这种云水平铺展、层状均匀的特征。

相词汇 Related Words

文学作品引用 Literary References

  • 在雪莱(Percy Bysshe Shelley)的诗作 The Cloud(《云》)中,诗人以拟人手法描写了各种云层形态,其中对层状云的描绘与高层云的特征相符。
  • 在卢克霍华德(Luke Howard)的经典气象学著作 The Climate of London(《伦敦的气候》)中,系统阐述了包括高层云在内的云层分类体系,奠定了现代云分类学的基础。
  • 在理查德汉布林(Richard Hamblyn)的 The Invention of Clouds(《云的发明》)中,详细讲述了云的命名与分类历史,其中多次涉及 altostratus 这一云属的定义与观测。
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