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气溶胶知识小课堂

NASA's Earth Minute: My Name is Aerosol

This is an aerosol particle.
这是一颗气溶胶粒子
In real life, you could barely see it.
在现实生活中 你几乎看不到它
It’s just a little speck suspended in the atmosphere anywhere from a few days to several years.
它只是一颗能在空气中停留数天到数年的小颗粒
It could be dust from a desert.
它可能是来自沙漠的一粒尘土
Or salt from ocean spray.
也可能是海洋水沫中的盐粒子
It could have been blasted out of a volcano.
可能是火山爆发形成的
Or created during a forest fire.
也可能产生于一场森林大火
It might have flown out of a factory smokestack.
气溶胶颗粒可能从工厂的烟囱中溢出
Or a truck’s tailpipe.
也可能来自于卡车的排气管
Depending on what it is—and where it is—
不同环境产生的和不同种类的气溶胶颗粒
an aerosol particle can do some impressive things.
造成的重大影响也有差异
Like cool the planet by reflecting sunlight back into space.
一些颗粒能将阳光反射回太空 使地球降温
Or by collecting water vapor to build a cloud.
或者聚集水蒸气形成云
On the other hand, some aerosol particles trap sunlight and heat the air,
另一方面 有些气溶胶颗粒能够吸收阳光 使空气升温
thus preventing clouds from forming.
从而阻碍云的形成
Other aerosols can host chemical reactions that damage the ozone layer.
还有一些气溶胶颗粒能够形成破坏臭氧层的化学物质
And down on Earth,
如果气溶胶颗粒下沉到地面
they can even cause health problems, such as lung and heart disease.
甚至可以导致肺炎和心脏病之类的健康问题
That layer of hazy air pollution above big cities?
就像是都市的雾霾空气污染层吗?
Yep, it contains aerosol particles.
是的 雾霾中包含气溶胶颗粒
Aerosols. They’re tiny. They’re powerful.
微小的气溶胶颗粒蕴藏着大大的能量
NASA studies them with satellites and instruments on the International Space Station
NASA利用国际空间站的卫星设备
and with specialized aircraft and ground-based devices.
专业航天器和地面设备研究气溶胶颗粒
Because when it comes to understanding our environment, our climate,
因为在了解气溶胶颗粒对地球环境和气候的影响
and how it’s all changing
以及它自身的变化规律时
little particles make a big difference!
气溶胶颗粒起到了很重要的作用

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视频概述

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听录译者

收集自网络

翻译译者

Jasmine

审核员

审核员BY

视频来源

https://www.youtube.com/watch?v=4eh6IKahbok

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