If humanity stopped all production of greenhouse gases today, Earth would experience several decades more of additional global warming. That is not simply because the carbon dioxide, methane and other greenhouse gases thrown into the atmosphere by human activity won’t disappear in a day, but because the oceans can’t continue to act as shock absorbers.
Earth has tipped into a heat imbalance since 1970, and this excess heating has thus far been greatly ameliorated because the world’s oceans have absorbed 93 percent of the enhanced heating since the 1970s. This accumulated heat is not permanently stored, but can be released back into the atmosphere, potentially providing significant feedback that would accelerate global warming.
The latest in a series of scientific reports detailing the disastrous course of global warming, “Explaining Ocean Warming: Causes, Effects and Consequences,” concludes that the mean global ocean temperature will increase by as much as…
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