Ramez Naam, explained it this way: Heres how: Ice and snow reflect light. Thick ice covered with snow will reflect the large majority of the suns energy back into space, absorbing only 10 to 20%
of the sunlight as heat. Ocean water, on the other hand, reflects very little of the suns energy back into space, absorbing more than 90% of it as heat. Naam points to the following causes for
disappearing sea ice, which he calls the triple whammy: Warming from the greenhouse gases we emit already. Warming from the loss of ice and permafrost in the Arctic, and the exposure of dark
water and dark land below.
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