NASA:全球變暖,海平面上升

20多年來,美國航空航天局一直在跟蹤海洋的全球表面形貌,以便了解它在我們的日常生活中的重要作用。氣候變化是導致海洋升溫和冰川融化,海平面上升的罪魁禍首。自1880年以來,全球海平面上升8英寸;到2100年,預計會再上升1-4英尺

NASA一直在關注著全球變暖,,
NASA has observed the earth getting warmer...

海平面變得越來越高
and the sea level getting higher.

這之間有何聯系?
What's the connection?

就像溫度計里的水銀一樣,受到熱力就會膨脹
Just like mercury in a thermometer, water expands when it's heated.

而海水吸收了全球變暖超過90%的熱量
And Earth's ocean is taking in more than 90% of the heat from global warming

這是一個巨大的數字
That's a lot.

水溫上升會導致大量的冰層融化,最終我們會終結于水
Warter temperatures also cause a lot of the ice to melt, and it ends up in the ocean.

一個小孩從出生到死亡的這段時間,海平面大約會上升1-4英尺
A child born today can expect the ocean to rise between 1 and 4 feet in their lifetime.

單單在美國,就有5百萬人居住在高于當地水位4英尺的地方
In the United States alone, nearly 5 million people live within 4 feet of the local high tide level.

這就意味著暴風雨天氣就會引發更多的洪水災害
That could mean increased flooding from storm surges.

并且隨著海平面的上升,鹽水會混合河水和地下水
And as the ocean rises, its salt water can mix with our rivers and ground water...

進而影響到當地居民的飲用水和耕種
which is where many people get fresh water for drinking and farming.

毫無疑問的是,海平面一直在上升
So there's no question that sea level is rising.

NASA從空間站能夠測量到這些數據
NASA can measure it from space.

但是我們該做些什么呢?
But what are we going to do about it?

一些人會采取去適應的舉措
Some communities are taking steps to adapt...

另一些人致力于解決帶來這些問題的病因:全球變暖
and others are working to address the cause: global warming.

這是一項很大的挑戰,但是,我們會努力去做好它
It's a big challenge, but, hey, we better be up for it.

因為,現在,地球是我們唯一的家園。
Because, right now, good old Earth is the only planet we've got!

任 江風

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