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气候变化只是空气变热吗 – 译学馆
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气候变化只是空气变热吗

Is Climate Change Just A Lot Of Hot Air?

你很可能已经听说气候正变得越来越极端 而这有一部分是因为
You’ve probably heard that weather is getting more extreme and that this is in part because
不断积累的温室气体导致地球表面的空气温度在过去的一个世纪里
accumulating greenhouse gases have caused the air at earth’s surface to warm by an
平均上升了0.8℃ 然而 这几乎不能被察觉到的气温升高现象
average of 0.8 degrees celsius over the last century. But how could a barely perceptible
怎么会导致气候如此疯狂的变化呢?
rise in air temperature lead to such crazy changes in weather?
嗯 在过去的一个世纪里 地球大气层实际吸收的额外能量 气温升高的那部分
Well, that air temperature rise actually only amounts to 1% of the extra energy absorbed
只占了1% 有一部分被陆地吸收了
by earth’s atmosphere over the last century –\u00a0a few percent has been absorbed by land
剩余的大部分被海洋吸收了 海洋热容量增加的这部分能量
and almost all the rest has been soaked up by the oceans. That increase in ocean heat
相当于在过去一个世纪里每一秒钟都爆发一颗原子弹所产生的总能量
content is the energy equivalent of an atomic bomb exploding every second for the last 100
这很重要 因为储存在海洋里的热能对气候有很大影响
years. And THAT matters because heat stored in the oceans has a big impact on the weather.
其中之一就是 水表面的温度越高 蒸发到空气中的水分也越多
For one, the warmer the water at the surface gets, the more of it vaporizes into the air.
同时 气温每上升一度 容纳水蒸气的空气容量
At the same time, every degree increase in air temperature raises the air’s capacity
也会随之提高7% 这意味着通过海洋散发出来的空气分子
to hold water vapor by about 7 percent. This means parcels of air out over the ocean are
比以前聚集了更多的水分子 这会导致大雨和大雪的发生
picking up more water than they used to, which leads to HEAVIER rains and snows. Meanwhile,
陆地表面越热 意味着陆地上空的空气分子比以前聚集的水分子也越多
warmer land surfaces mean parcels of air over land are also picking up more water than they
这会导致干燥的地方更干燥 旱灾更严重
used to, making dry places drier and droughts harsher.
海洋温度的升高也会使得海洋表面更热
Warmer oceans also make concentrated hot spots on the ocean’s surface even hotter. These
这些海洋表面温度很高的区域有利于形成最高级别的
areas of high sea surface temperatures have always helped drive the biggest storms and
风暴和洪水 这就包括了近年来发生的飓风Sandy和超强台风海燕
floods, including, in recent years, both Hurricane Sandy and super-typhoon Haiyan. We don’t
至今为止我们还不清楚海洋温度升高是否会导致更多风暴的产生
yet know for sure whether warming oceans are producing a greater number of these storms,
但物理常识告诉我们 海洋的温度越高
but it’s basic physics that more heat in the oceans gives these kinds of storms significantly
这些风暴发生时的能量也会越大 破坏力也就更强
more energy and destructive power when they do happen.
所以 如果你听到世界气候已经变得越来越极端
So if you’ve heard that the world’s weather has been getting more extreme,
这不仅仅是空气变热而已 还是水温升高的问题
it’s not just a lot of hot air. It’s also a bunch of warm water.
嗨 我是Henry 感谢收看 也感谢lynda.com对我这个视频的支持
hey this is Henry.thanks for watching and thanks to lynda.com for supporting this video.
lynda.com是一个拥有超过3000个视频课程的在线学习平台 这个平台可以有利于你在任何时候任何地方
lynda.com is an online learning platform with over 3000video courses that can help strengthen your business
巩固你的商业 技术和创新性技能
technology and creative skills wherever whenever
你可以学习如何使用照片或者视频处理软件 掌握沟通技巧 或者建立网站
you can learn how to use photo or video software master negotiation skills or build a website
所有的课程都在你自己的电脑 智能手机或者平板上 按照你自己的节奏进行
all are on your pace on your computers smartphone or tablet
访问lynda.com/minuteearth获取10天免费试用 还可以凭此获取lynda.com的所有课程
go to lynda.com/minuteearth for a free 10-day trial and acess to all of lynda.com’s courses
再一次 这是lynda lynda.com/minuteearth的10天免费试用
again that’s lynda lynda.com/minuteearth for a free 10-day trial
感谢lynda.com让我的minuteearth得以实现
thanks to lynda.com for helping me with minuteearth possible

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视频概述

关于气候变暖的科普知识,从科学角度向大家阐述气候变暖是怎么一回事。

听录译者

收集自网络

翻译译者

Vincent

审核员

审核团审核员XD

视频来源

https://www.youtube.com/watch?v=nEQghbA3pLM

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