NASA:全球變暖,格陵蘭島冰層融化

坐落在靠近北極的地方,格陵蘭島上覆蓋著巨大的冰川,有3倍德克薩斯州的大小,平均深度一英里。格陵蘭島變暖速度幾乎是南極州的2倍,造成冰雪融化,全球海平面上升。 NASA一直在監測格陵蘭島的冰層空間下面的海底,以提供數據供科學家研究其所有的冰層融化對全球的影響。

 

NASA一直都在注意著格陵蘭島這個地方
NASA is keeping a watchful eye on Greenland

并且觀測著格陵蘭島上的冰的覆蓋變化
tracking changes in the big sheet of ice that covers most of the island

為什么?
why

其實很簡單,跟采礦工人在煤礦附近會放一只金絲雀一樣
the same reason coal miners used to bring canaries in the coal mines

如果,金絲雀突然不鳴叫,那么危險就要來臨了
if they stop singing it was a warning sign the trouble was coming

而格陵蘭島就是全球變暖的“金絲雀”
Greenland's ice sheet is one of earth's canaries when it comes to global warming

極地區域對全球變暖都會異常的敏感
polar regions are more sensitive to a warming earth and other parts of the world

因此,格陵蘭島發生的事情
so what happens in places like Greenland

是對地球上其他地區的一個預警
the rest of the Arctic and Antarctica alert as to what's in store for the rest of the planet

而且,格陵蘭島上的冰也會直接的影響到我們
and Greenland's ice can also affect many of us directly

我們都知道,格陵蘭島上大部分都是凍冰,如果這些冰全部融化,海平面將會上升23英尺,
you see Greenland has more land ice than any other place except Antarctica if it all melted it would raise sea level around 23 feets

這個高度足以淹沒海岸線了,整個世界都會處在水下
that's enough to put coastlines around the world underwater

事實上冰一直在融化
and in fact the ice is melting

不過離世界末世還早著呢——這要花費數個世紀
it's far from all gone ——that could take centuries

但是,格陵蘭島的冰因為融化,每年往海洋輸送大約250億噸的水。
but Greenland's ice sheet currently adds about 250 gigatonnes of water to the ocean every year

億噸是什么概念?
what's a gigatonne?

一個億噸大約是1立方千米的冰塊
it's a billion tonnes which is approximately a block of ice one kilometre square
每年,格陵蘭島有250個這樣大的冰塊融化
and 250 of these giant Greenland ice blocks melt every year

這些融化的水
all this extra fresh water from this melting ice

能夠改變海洋自身的循環
could also change circulation patterns in the ocean

而且也會對氣候產生影響,也就是說,即使你沒有住在臨海
and in the atmosphere which means even if you don't live near the ocean

格陵蘭島的冰層融化也會潛移默化的影響當地的氣候
a melting Greenland could potentially affect your local weather in the future

這就是為什么NASA一直在觀察著格陵蘭島
so that's why NASA is monitoring ice sheet

他就像是金絲雀一樣給我們預警
it's like that canary in the coalmine warning us of trouble by tracking and measuring the changes

讓我們做好準備迎接未來
we will all be better prepared for the future

任 江風

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