层云和雾差不多,所以如果你曾在雾天上山,那就是云中漫步。
5. Lenticular[lɛn'tɪkjəlɚ] 荚状云
Our final two cloud types will not help you predict the coming weather, but they do give a glimpse of the extraordinarily complicated motions of the atmosphere.
我们最后要说的两种云不能帮你预告天气,但是可以瞥见大气异常复杂的变化。
Smooth, lens-shaped Lenticular clouds form as air is blown up and over a mountain range.
平滑的透镜形状的荚状云是空气膨胀时在山脉上方形成。
Once past the mountain, the air sinks back to its previous level. As it sinks, it warms and the cloud evaporates. But it can overshoot, in which case the air mass bobs back up allowing another Lenticular cloud to form.
一旦经过山脉,空气就缩回到原先的水平。空气收缩时会升温,云朵会蒸发。但如果收缩过了头,空气团就会回弹,形成另一朵荚状云。
This can lead to a string of clouds, extending some way beyond the mountain range. The interaction of wind with mountains and other surface features is one of the many details that have to be represented in computer simulators to get accurate predictions of the weather.
由此产生的一连串荚状云会延伸到山脉的另一边。风和山及其他地貌的相互作用是电脑模拟器需要考虑的众多细节之一,否则无法准确预测天气。
【观云识天:这6种气象云帮你预知天气(组图)】相关文章:
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