我们记录辐射收支的一种方法是观察地球上不同表面的反照率。
One way we keep track of the radiation budget is by looking at the albedo of the different surfaces on the planet.
它把光照反射到外太空（也就是人们所熟知的增加地球的反照率）同样也能降低地球的温度。 皇家学会的笔者认为有两种途径实现此作用。
Reflecting sunlight back into outer space (increasing the Earth’s albedo, as it is known) would also cool the planet, and the Royal Society’s authors consider two ways of doing so.
海冰的消退以及冰雪的融化降低了地球的反照率，这将导致温度继续增高冰雪继续消融。
Sea ice retreat and snow melt reduce Earth's albedo, which can lead to increased warmth and further melting.
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